[et_pb_section fb_built=”1″ _builder_version=”4.27.7″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_row _builder_version=”4.27.7″ _module_preset=”default” custom_padding=”0px||0px||true|false” locked=”off” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_column type=”4_4″ module_class=”pa-inline-buttons” _builder_version=”4.27.7″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_heading title=”Gas Group A, B, C, or D Flow Controllers for Hazardous Locations” _builder_version=”4.27.7″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_heading title=”Understanding Group ABCD gases and their process control: methane, hydrogen, propane, acetylene, ethylene” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h2″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” global_colors_info=”{}” theme_builder_area=”post_content”]Each species of gas in Groups A, B, C, or D brings its own classification, and each constrains the piping design, where to install it, and how to control it. Because flow control will not fail quietly in explosive gas systems, it fails fast, and in the wrong direction.[\/et_pb_text][et_pb_heading title=”What to watch for with Group ABCD:” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h3″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_heading title=”Ignition behavior drives classification” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h4″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n
[\/et_pb_text][et_pb_heading title=”Storage constraints” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h4″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n
[\/et_pb_text][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” global_colors_info=”{}” theme_builder_area=”post_content”]Alicat builds mass flow controllers that operate inside constraints like hazardous zones, purge areas, explosion-proofing, backpressure risks, materials limitations, and reducing leak risks, not around them.<\/p>\n
If a process involves methane, hydrogen, propane, acetylene, or ethylene, control is only part of the problem. One real constraint is whether the process has an area classification.[\/et_pb_text][et_pb_heading title=”Flow control, pressure control and metering of explosive gases” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h3″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.8″ _module_preset=”default” custom_margin=”||2rem||false|false” hover_enabled=”0″ global_colors_info=”{}” theme_builder_area=”post_content” sticky_enabled=”0″]First, don’t look for a generic flow controller. Working inside a hazardous zone<\/a>—Class I Division 1, Class I Division 2, Zone 0, Zone 1, or Zone 2\u2014narrows selection options fast.<\/p>\n Most devices that measure gas stay outside the hazard zone. They push signals into panels, out of enclosures, inside purge systems. The system grows, complexity grows with it. Let\u2019s take a different approach: put the controller where the gas is.<\/p>\n Alicat’s intrinsically safe mass flow controllers are engineered for Class 1 Division 1 and ATEX Zone 0, 1 environments<\/a>, where explosive gas may be present continuously, and others are for Class 1 Division 2 and ATEX Zone 2 environments, hazlocs where explosive gas may be present sometimes. These are mass flow controllers, mass flow meters, electronic pressure controllers, and gauges made to operate in-zone, with integrated control, digital communications, and real-time process visibility.[\/et_pb_text][et_pb_divider color=”#000000″ _builder_version=”4.27.7″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_divider][et_pb_image src=”https:\/\/www.alicat.com\/wp-content\/uploads\/2026\/08\/group-abcd-ex-rating-warning-sign.webp” alt=”Danger warning sign on a fence at a Group A explosive gas facility” align_tablet=”” align_phone=”center” align_last_edited=”on|phone” _builder_version=”4.27.7″ _module_preset=”default” max_width_tablet=”50%” max_width_phone=”80%” max_width_last_edited=”on|tablet” max_height=”600px” custom_margin=”7px||||false|false” custom_margin_tablet=”7px||||false|false” custom_margin_phone=”1rem||||false|false” custom_margin_last_edited=”on|phone” custom_padding=”||2rem|2rem|false|false” custom_padding_tablet=”||2rem|2rem|false|false” custom_padding_phone=”|||0rem|false|false” custom_padding_last_edited=”on|phone” custom_css_main_element=”float: right;” locked=”off” global_colors_info=”{}” custom_css_main_element_last_edited=”on|phone” custom_css_main_element_phone=”float: none;” custom_css_main_element_tablet=”float: right;” theme_builder_area=”post_content”][\/et_pb_image][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”]Select your gas, find a flow controller[\/et_pb_text][et_pb_heading title=”Group A \u2014 acetylene” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h2″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_heading title=”Core issue with storing and flowing pressurized acetylene gas:” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h3″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n Instability under pressure.<\/p>\n [\/et_pb_text][et_pb_heading title=”Acetylene storage” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h3″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n [\/et_pb_text][et_pb_heading title=”Pressure” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h3″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n [\/et_pb_text][et_pb_heading title=”Acetylene flow” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h3″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n [\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” custom_padding=”25px||25px|25px|true|false” border_width_left=”6px” border_color_left=”#E12028″ locked=”off” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_column type=”4_4″ module_class=”pa-inline-buttons” _builder_version=”4.27.7″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_heading title=”Acetylene key takeaways” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h3″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||0px||false|false” global_colors_info=”{}” theme_builder_area=”post_content”]Applications<\/span>:\u00a0 Acetylene welding<\/a>. Acetylene reduction<\/a>. Acetylene sampling analysis<\/a>. Specialty gas handling.<\/p>\n Acetylene is restrictive. Acetylene is not just flammable, it is self-reactive under pressure, which makes it fundamentally different from all other fuel gases.<\/p>\n Acetylene needs:<\/span> Equipment choices narrow fast. Control must be deliberate, instrument configuration must match the process exactly.<\/p>\n Solutions<\/span>: Intrinsically safe CID1 IS-Max flow controllers<\/a> and meters, and CID2 MC-Series mass flow controller<\/a> product lines feature customized flow control settings, and lots of flexibility to change them in the field. Intrinsically safe Class I division 1 IS-Pro pressure controllers<\/a> and Class I Division 2 (ATEX Zone 2) PC-Series pressure controller<\/a> product lines pair well with the mass flow and metering from Alicat.[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row use_custom_gutter=”on” gutter_width=”2″ make_equal=”on” custom_padding_last_edited=”off|phone” disabled_on=”off|off|off” _builder_version=”4.27.7″ _module_preset=”default” custom_padding=”0px||2rem||false|false” custom_css_free_form=”selector .et_pb_column {|| align-items: center;|| display: flex;|| gap: 1rem;|| justify-content: flex-start;||}||||selector .et_pb_button_module_wrapper {|| flex-shrink: 0;||}” locked=”off” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_column type=”4_4″ _builder_version=”4.27.6″ _module_preset=”default” custom_css_main_element=”text-align: center;” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_heading title=”Request an acetylene flow or pressure device configuration” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h4″ custom_margin=”||0px||false|false” custom_padding=”||0px||false|false” custom_css_free_form=”selector h4 {|| padding-bottom: 0;||}” global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_button button_url=”@ET-DC@eyJkeW5hbWljIjp0cnVlLCJjb250ZW50IjoicG9zdF9saW5rX3VybF9wYWdlIiwic2V0dGluZ3MiOnsicG9zdF9pZCI6IjM3MjQwIn19@” button_text=”Request a Quote” button_alignment=”center” button_alignment_tablet=”center” button_alignment_phone=”” button_alignment_last_edited=”on|desktop” module_class=”ga_event_link_click_lead btn_transform_on_click” _builder_version=”4.27.5″ _dynamic_attributes=”button_url” _module_preset=”default” custom_button=”on” button_text_size=”14px” button_bg_color=”#E12028″ button_border_color=”#E12028″ button_icon=”||fa||900″ button_icon_color=”#FFFFFF” button_icon_placement=”left” button_on_hover=”off” custom_padding=”7px|15px|7px|32px|true|false” custom_padding_tablet=”9px|25px|9px|25px|true|true” custom_padding_phone=”9px|10px|9px|10px|true|true” custom_padding_last_edited=”off|desktop” custom_css_before=”margin: 0 0 0 -20px !important;” global_module=”40637″ saved_tabs=”all” locked=”off” global_colors_info=”{}” button_icon_color__hover_enabled=”on|desktop” button_icon_color__hover=”#FFFFFF” button_border_color__hover_enabled=”on|hover” button_border_color__hover=”#c11a21″ button_text_color__hover_enabled=”on|desktop” button_text_color__hover=”#FFFFFF” button_bg_color__hover_enabled=”on|hover” button_bg_color__hover=”#c11a21″ button_bg_enable_color__hover=”on” theme_builder_area=”post_content”][\/et_pb_button][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.27.7″ _module_preset=”default” custom_padding=”0px||0px||true|false” locked=”off” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_column type=”4_4″ module_class=”pa-inline-buttons” _builder_version=”4.27.7″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_divider color=”#000000″ _builder_version=”4.27.7″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_divider][et_pb_image src=”https:\/\/www.alicat.com\/wp-content\/uploads\/2026\/08\/hydrogen-storage-tank.webp” alt=”Hydrogen storage tank with a worker in a hard hat checking the pressure gauge in a potentially hazardous gas zone” align_tablet=”” align_phone=”center” align_last_edited=”on|phone” _builder_version=”4.27.7″ _module_preset=”default” max_width_tablet=”50%” max_width_phone=”80%” max_width_last_edited=”on|phone” max_height=”600px” max_height_tablet=”” max_height_phone=”” max_height_last_edited=”on|tablet” custom_margin=”7px||||false|false” custom_margin_tablet=”7px||||false|false” custom_margin_phone=”1rem||||false|false” custom_margin_last_edited=”on|phone” custom_padding=”||2rem|2rem|false|false” custom_padding_tablet=”||2rem|2rem|false|false” custom_padding_phone=”|||0rem|false|false” custom_padding_last_edited=”on|phone” custom_css_main_element=”float: right;” locked=”off” global_colors_info=”{}” custom_css_main_element_last_edited=”on|phone” custom_css_main_element_phone=”float: none;” custom_css_main_element_tablet=”float: right;” theme_builder_area=”post_content”][\/et_pb_image][et_pb_heading title=”Group B \u2014 hydrogen” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h2″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_heading title=”Core issues with storing and flowing pressurized hydrogen gas:” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h3″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” global_colors_info=”{}” theme_builder_area=”post_content”]Ignition sensitivity and material interaction.[\/et_pb_text][et_pb_heading title=”Hydrogen storage” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h3″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n [\/et_pb_text][et_pb_heading title=”Pressure” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h3″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n [\/et_pb_text][et_pb_heading title=”Hydrogen flow” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h3″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n [\/et_pb_text][et_pb_heading title=”Additional concern” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h3″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n [\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” custom_padding=”25px||25px|25px|true|false” border_width_left=”6px” border_color_left=”#E12028″ locked=”off” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_column type=”4_4″ module_class=”pa-inline-buttons” _builder_version=”4.27.7″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_heading title=”Hydrogen key takeaways” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h3″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||0px||false|false” global_colors_info=”{}” theme_builder_area=”post_content”]Applications<\/span>: Hydrogen fuel cells<\/a>. Chemical synthesis<\/a>. Electrolysis<\/a>. Blending systems. Hydrogenation<\/a>. Hydrogen propulsion<\/a>.<\/p>\n Hydrogen problems come from how easy it is to ignite and how hard it is to contain, not from pressure limits alone. Hydrogen exposes weak instrumentation fast. Low density, fast diffusion, tight control bands.<\/p>\n Hydrogen flow control needs<\/span>: Fast response, high sensitivity, optional humidity and dew point data in the same device.<\/p>\n Solutions<\/span>: Intrinsically safe CID1 IS-Max<\/a> and CID2 MC-Series<\/a> mass flow controller product lines have some of the fastest control speeds in the world, with 65,000 levels of resolution. Optional relative humidity sensors will compensate for vapor in their mass flow measurements. Intrinsically safe Class I division 1 IS-Pro pressure controllers<\/a> and Class I Division 2 (ATEX Zone 2) PC-Series pressure controller<\/a> product lines pair well with the mass flow and metering from Alicat.[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row use_custom_gutter=”on” gutter_width=”2″ make_equal=”on” custom_padding_last_edited=”off|phone” disabled_on=”off|off|off” _builder_version=”4.27.7″ _module_preset=”default” custom_padding=”0px||2rem||false|false” custom_css_free_form=”selector .et_pb_column {|| align-items: center;|| display: flex;|| gap: 1rem;|| justify-content: flex-start;||}||||selector .et_pb_button_module_wrapper {|| flex-shrink: 0;||}” locked=”off” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_column type=”4_4″ _builder_version=”4.27.6″ _module_preset=”default” custom_css_main_element=”text-align: center;” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_heading title=”Want hydrogen flow or pressure device configuration information?” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h4″ custom_margin=”||0px||false|false” custom_padding=”||0px||false|false” custom_css_free_form=”selector h4 {|| padding-bottom: 0;||}” global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_button button_url=”@ET-DC@eyJkeW5hbWljIjp0cnVlLCJjb250ZW50IjoicG9zdF9saW5rX3VybF9wYWdlIiwic2V0dGluZ3MiOnsicG9zdF9pZCI6IjM3MjQwIn19@” button_text=”Request a Quote” button_alignment=”center” button_alignment_tablet=”center” button_alignment_phone=”” button_alignment_last_edited=”on|desktop” module_class=”ga_event_link_click_lead btn_transform_on_click” _builder_version=”4.27.5″ _dynamic_attributes=”button_url” _module_preset=”default” custom_button=”on” button_text_size=”14px” button_bg_color=”#E12028″ button_border_color=”#E12028″ button_icon=”||fa||900″ button_icon_color=”#FFFFFF” button_icon_placement=”left” button_on_hover=”off” custom_padding=”7px|15px|7px|32px|true|false” custom_padding_tablet=”9px|25px|9px|25px|true|true” custom_padding_phone=”9px|10px|9px|10px|true|true” custom_padding_last_edited=”off|desktop” custom_css_before=”margin: 0 0 0 -20px !important;” global_module=”40637″ saved_tabs=”all” locked=”off” global_colors_info=”{}” button_icon_color__hover_enabled=”on|desktop” button_icon_color__hover=”#FFFFFF” button_border_color__hover_enabled=”on|hover” button_border_color__hover=”#c11a21″ button_text_color__hover_enabled=”on|desktop” button_text_color__hover=”#FFFFFF” button_bg_color__hover_enabled=”on|hover” button_bg_color__hover=”#c11a21″ button_bg_enable_color__hover=”on” theme_builder_area=”post_content”][\/et_pb_button][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.27.7″ _module_preset=”default” custom_padding=”0px||0px||true|false” locked=”off” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_column type=”4_4″ module_class=”pa-inline-buttons” _builder_version=”4.27.7″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_divider color=”#000000″ _builder_version=”4.27.7″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_divider][et_pb_heading title=”Group C \u2014 ethylene” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h2″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_heading title=”Core issues with storing and flowing pressurized ethylene gas:” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h3″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” global_colors_info=”{}” theme_builder_area=”post_content”]Moderate reactivity, with lower ignition thresholds than Group D.[\/et_pb_text][et_pb_heading title=”Ethylene storage” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h3″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n [\/et_pb_text][et_pb_heading title=”Pressure” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h3″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n [\/et_pb_text][et_pb_heading title=”Ethylene flow” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h3″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n [\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” custom_padding=”25px||25px|25px|true|false” border_width_left=”6px” border_color_left=”#E12028″ locked=”off” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_column type=”4_4″ module_class=”pa-inline-buttons” _builder_version=”4.27.7″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_heading title=”Ethylene key takeaways” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h3″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||0px||false|false” global_colors_info=”{}” theme_builder_area=”post_content”]Applications<\/span>: Polymer processes. Reaction control<\/a>. Gas dosing.<\/p>\n Ethylene introduces tighter requirements. Reaction stability depends on flow stability.<\/p>\n Ethylene flow controller needs<\/span>: Closed-loop control inside the hazardous area. That is where it matters. Ethylene pushes systems toward tighter control and higher protection, but does not impose exotic storage constraints.<\/p>\n Solutions<\/span>: Intrinsically safe CID1 IS-Max<\/a> and CID2 MC-Series<\/a> mass flow controller product lines have the protections demanded, and some of the fastest, most accurate control specifications in the industry.[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row use_custom_gutter=”on” gutter_width=”2″ make_equal=”on” custom_padding_last_edited=”off|phone” disabled_on=”off|off|off” _builder_version=”4.27.7″ _module_preset=”default” custom_padding=”0px||2rem||false|false” custom_css_free_form=”selector .et_pb_column {|| align-items: center;|| display: flex;|| gap: 1rem;|| justify-content: flex-start;||}||||selector .et_pb_button_module_wrapper {|| flex-shrink: 0;||}” locked=”off” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_column type=”4_4″ _builder_version=”4.27.6″ _module_preset=”default” custom_css_main_element=”text-align: center;” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_heading title=”Looking for ethylene flow or pressure device configuration?” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h4″ custom_margin=”||0px||false|false” custom_padding=”||0px||false|false” custom_css_free_form=”selector h4 {|| padding-bottom: 0;||}” global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_button button_url=”@ET-DC@eyJkeW5hbWljIjp0cnVlLCJjb250ZW50IjoicG9zdF9saW5rX3VybF9wYWdlIiwic2V0dGluZ3MiOnsicG9zdF9pZCI6IjM3MjQwIn19@” button_text=”Request a Quote” button_alignment=”center” button_alignment_tablet=”center” button_alignment_phone=”” button_alignment_last_edited=”on|desktop” module_class=”ga_event_link_click_lead btn_transform_on_click” _builder_version=”4.27.5″ _dynamic_attributes=”button_url” _module_preset=”default” custom_button=”on” button_text_size=”14px” button_bg_color=”#E12028″ button_border_color=”#E12028″ button_icon=”||fa||900″ button_icon_color=”#FFFFFF” button_icon_placement=”left” button_on_hover=”off” custom_padding=”7px|15px|7px|32px|true|false” custom_padding_tablet=”9px|25px|9px|25px|true|true” custom_padding_phone=”9px|10px|9px|10px|true|true” custom_padding_last_edited=”off|desktop” custom_css_before=”margin: 0 0 0 -20px !important;” global_module=”40637″ saved_tabs=”all” locked=”off” global_colors_info=”{}” button_icon_color__hover_enabled=”on|desktop” button_icon_color__hover=”#FFFFFF” button_border_color__hover_enabled=”on|hover” button_border_color__hover=”#c11a21″ button_text_color__hover_enabled=”on|desktop” button_text_color__hover=”#FFFFFF” button_bg_color__hover_enabled=”on|hover” button_bg_color__hover=”#c11a21″ button_bg_enable_color__hover=”on” theme_builder_area=”post_content”][\/et_pb_button][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.27.7″ _module_preset=”default” custom_padding=”0px||0px||true|false” locked=”off” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_column type=”4_4″ module_class=”pa-inline-buttons” _builder_version=”4.27.7″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_divider color=”#000000″ _builder_version=”4.27.7″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_divider][et_pb_heading title=”Group D \u2014 methane and propane” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h2″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_heading title=”Methane” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h3″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_heading title=”Core issues with storing and flowing pressurized methane gas:” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h4″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” global_colors_info=”{}” theme_builder_area=”post_content”]Volume, accumulation as a rising, low-mass gas, with conventional flammability.[\/et_pb_text][et_pb_heading title=”Methane storage” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h4″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n [\/et_pb_text][et_pb_heading title=”Pressure” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h4″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n [\/et_pb_text][et_pb_heading title=”Methane flow” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h4″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n [\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” custom_padding=”25px||25px|25px|true|false” border_width_left=”6px” border_color_left=”#E12028″ locked=”off” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_column type=”4_4″ module_class=”pa-inline-buttons” _builder_version=”4.27.7″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_heading title=”Methane key takeaways” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h4″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||0px||false|false” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n Applications: <\/span>Natural gas systems<\/a>. Emissions monitoring<\/a>. Blending<\/a>. Methane pyrolysis<\/a>.<\/p>\n Methane is operationally straightforward. The risk comes from invisible accumulation and volume, not unusual physics.<\/p>\n Methane flow control needs<\/span>: stable low-pressure differential flow control across wide ranges. It also sits in Group D, where many instruments can survive, fewer can control. Alicat controllers regulate flow directly in classified zones. No stand-alone valve. No relocation to safe area.<\/p>\n Solutions<\/span>: Intrinsically safe CID1 IS-Max<\/a> and CID2 MC-Series<\/a> mass flow controller product lines have the integrated valves, digital reporting, and programming controls that make commissioning easy.<\/p>\n [\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row use_custom_gutter=”on” gutter_width=”2″ make_equal=”on” custom_padding_last_edited=”off|phone” disabled_on=”off|off|off” _builder_version=”4.27.7″ _module_preset=”default” custom_padding=”0px||2rem||false|false” custom_css_free_form=”selector .et_pb_column {|| align-items: center;|| display: flex;|| gap: 1rem;|| justify-content: flex-start;||}||||selector .et_pb_button_module_wrapper {|| flex-shrink: 0;||}” locked=”off” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_column type=”4_4″ _builder_version=”4.27.6″ _module_preset=”default” custom_css_main_element=”text-align: center;” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_heading title=”Do you want methane flow or pressure device configuration help?” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h4″ custom_margin=”||0px||false|false” custom_padding=”||0px||false|false” custom_css_free_form=”selector h4 {|| padding-bottom: 0;||}” global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_button button_url=”@ET-DC@eyJkeW5hbWljIjp0cnVlLCJjb250ZW50IjoicG9zdF9saW5rX3VybF9wYWdlIiwic2V0dGluZ3MiOnsicG9zdF9pZCI6IjM3MjQwIn19@” button_text=”Request a Quote” button_alignment=”center” button_alignment_tablet=”center” button_alignment_phone=”” button_alignment_last_edited=”on|desktop” module_class=”ga_event_link_click_lead btn_transform_on_click” _builder_version=”4.27.5″ _dynamic_attributes=”button_url” _module_preset=”default” custom_button=”on” button_text_size=”14px” button_bg_color=”#E12028″ button_border_color=”#E12028″ button_icon=”||fa||900″ button_icon_color=”#FFFFFF” button_icon_placement=”left” button_on_hover=”off” custom_padding=”7px|15px|7px|32px|true|false” custom_padding_tablet=”9px|25px|9px|25px|true|true” custom_padding_phone=”9px|10px|9px|10px|true|true” custom_padding_last_edited=”off|desktop” custom_css_before=”margin: 0 0 0 -20px !important;” global_module=”40637″ saved_tabs=”all” locked=”off” global_colors_info=”{}” button_icon_color__hover_enabled=”on|desktop” button_icon_color__hover=”#FFFFFF” button_border_color__hover_enabled=”on|hover” button_border_color__hover=”#c11a21″ button_text_color__hover_enabled=”on|desktop” button_text_color__hover=”#FFFFFF” button_bg_color__hover_enabled=”on|hover” button_bg_color__hover=”#c11a21″ button_bg_enable_color__hover=”on” theme_builder_area=”post_content”][\/et_pb_button][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.27.7″ _module_preset=”default” custom_padding=”0px||0px||true|false” locked=”off” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_column type=”4_4″ module_class=”pa-inline-buttons” _builder_version=”4.27.7″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_heading title=”Propane” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h3″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_heading title=”Core issue with storing and flowing pressurized propane gas:” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h4″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” global_colors_info=”{}” theme_builder_area=”post_content”]Tendency to liquify without control of pressure and temperature, creating a phase change that can disrupt flow paths.[\/et_pb_text][et_pb_heading title=”Propane storage” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h4″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n [\/et_pb_text][et_pb_heading title=”Pressure” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h4″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n [\/et_pb_text][et_pb_heading title=”Propane flow control” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h4″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n [\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” custom_padding=”25px||25px|25px|true|false” border_width_left=”6px” border_color_left=”#E12028″ locked=”off” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_column type=”4_4″ module_class=”pa-inline-buttons” _builder_version=”4.27.7″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_heading title=”Propane key takeaways” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h4″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” global_colors_info=”{}” theme_builder_area=”post_content”]Applications<\/span>: Fuel systems<\/a>. Combustion rigs<\/a>. Consumer burners<\/a>. Pilot plants.<\/p>\n Propane introduces two-phase behavior<\/a> and pooling risk, which changes system design more than ignition characteristics. Propane flow shifts with pressure and temperature. Controllers must hold setpoint through that variation.<\/p>\n Install in Class I Division 1 or Zone 0 at high rates and pressures. Control at the source.<\/p>\n Solutions<\/span>: Intrinsically safe CID1 IS-Max<\/a> and CID2 MC-Series<\/a> mass flow controller product lines fill the requirement, at the protection level you require. Fast, digital and easy to integrate with powerful features like mass flow metering while controlling pressure or backpressure.[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row use_custom_gutter=”on” gutter_width=”2″ make_equal=”on” custom_padding_last_edited=”off|phone” disabled_on=”off|off|off” _builder_version=”4.27.7″ _module_preset=”default” custom_padding=”0px||2rem||false|false” custom_css_free_form=”selector .et_pb_column {|| align-items: center;|| display: flex;|| gap: 1rem;|| justify-content: flex-start;||}||||selector .et_pb_button_module_wrapper {|| flex-shrink: 0;||}” locked=”off” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_column type=”4_4″ _builder_version=”4.27.6″ _module_preset=”default” custom_css_main_element=”text-align: center;” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_heading title=”Request propane configuration” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h4″ custom_margin=”||0px||false|false” custom_padding=”||0px||false|false” custom_css_free_form=”selector h4 {|| padding-bottom: 0;||}” global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_button button_url=”@ET-DC@eyJkeW5hbWljIjp0cnVlLCJjb250ZW50IjoicG9zdF9saW5rX3VybF9wYWdlIiwic2V0dGluZ3MiOnsicG9zdF9pZCI6IjM3MjQwIn19@” button_text=”Request a Quote” button_alignment=”center” button_alignment_tablet=”center” button_alignment_phone=”” button_alignment_last_edited=”on|desktop” module_class=”ga_event_link_click_lead btn_transform_on_click” _builder_version=”4.27.5″ _dynamic_attributes=”button_url” _module_preset=”default” custom_button=”on” button_text_size=”14px” button_bg_color=”#E12028″ button_border_color=”#E12028″ button_icon=”||fa||900″ button_icon_color=”#FFFFFF” button_icon_placement=”left” button_on_hover=”off” custom_padding=”7px|15px|7px|32px|true|false” custom_padding_tablet=”9px|25px|9px|25px|true|true” custom_padding_phone=”9px|10px|9px|10px|true|true” custom_padding_last_edited=”off|desktop” custom_css_before=”margin: 0 0 0 -20px !important;” global_module=”40637″ saved_tabs=”all” locked=”off” global_colors_info=”{}” button_icon_color__hover_enabled=”on|desktop” button_icon_color__hover=”#FFFFFF” button_border_color__hover_enabled=”on|hover” button_border_color__hover=”#c11a21″ button_text_color__hover_enabled=”on|desktop” button_text_color__hover=”#FFFFFF” button_bg_color__hover_enabled=”on|hover” button_bg_color__hover=”#c11a21″ button_bg_enable_color__hover=”on” theme_builder_area=”post_content”][\/et_pb_button][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.27.7″ _module_preset=”default” custom_padding=”0px||0px||true|false” locked=”off” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_column type=”4_4″ module_class=”pa-inline-buttons” _builder_version=”4.27.7″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_divider color=”#000000″ _builder_version=”4.27.7″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_divider][et_pb_heading title=”Explosive gas behaviors comparison table” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h2″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][dvmd_table_maker tbl_top_left_mode=”on” tbl_responsive_break_by=”row” tbl_tcell_cell_color=”#F6F6F6″ tbl_tcell_cell_align_horz=”center” tbl_tcell_cell_align_vert=”center” tbl_chead_cell_color=”#2A3B47″ tbl_rhead_cell_color=”#2A3B47″ _builder_version=”4.27.7″ _module_preset=”default” tbl_tcell_text_text_color=”#2A3B47″ tbl_chead_text_font=”|600|||||||” tbl_chead_text_text_color=”#F6F6F6″ tbl_rhead_text_text_color=”#FFFFFF” custom_margin=”||2rem||false|false” custom_css_free_form=”selector .dvmd_tm_description {|| color: #808080;||\tfont-size: 12px;||\tfont-style: italic;||}||||selector .dvmd_tm_chead {|| overflow-wrap: break-word;||}” locked=”off” global_colors_info=”{}” theme_builder_area=”post_content”][dvmd_table_maker_item col_label=”gas” col_content=”gas hydrogen\u00a0→ design around leakage and ignition\u00a0→ fast response, leak-sensitive<\/p>\n ethylene → design around control stability → stable, precise dosing required<\/p>\n methane → design around volume and accumulation → steady bulk control<\/p>\n propane → design around phase and pooling → manage phase behavior[\/et_pb_text][et_pb_heading title=”System impact: a structural comparison” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h2″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][dvmd_table_maker tbl_top_left_mode=”on” tbl_responsive_break_by=”row” tbl_tcell_cell_color=”#F6F6F6″ tbl_tcell_cell_align_horz=”center” tbl_tcell_cell_align_vert=”center” tbl_chead_cell_color=”#2A3B47″ tbl_rhead_cell_color=”#2A3B47″ _builder_version=”4.27.7″ _module_preset=”default” tbl_tcell_text_text_color=”#2A3B47″ tbl_chead_text_font=”|600|||||||” tbl_chead_text_text_color=”#F6F6F6″ tbl_rhead_text_text_color=”#FFFFFF” custom_margin=”||2rem||false|false” custom_css_free_form=”selector .dvmd_tm_description {|| color: #808080;||\tfont-size: 12px;||\tfont-style: italic;||}||||selector .dvmd_tm_chead {|| overflow-wrap: break-word;||}” locked=”off” global_colors_info=”{}” theme_builder_area=”post_content”][dvmd_table_maker_item col_label=”factor” col_content=”factor Class I Division 1 or Zone 0 mean continuous exposure. Equipment must operate without creating an ignition path.<\/p>\n Class I Division 2 or Zone 2 allow different assumptions. Hazard exists only under abnormal conditions. More installation flexibility.<\/p>\n Classification differences change decisions:<\/p>\n With multivariate instruments like Alicat\u2019s laminar differential pressure products, one device inside the zone<\/em> replaces multiple devices outside it.<\/p>\n [\/et_pb_text][et_pb_divider color=”#000000″ _builder_version=”4.27.7″ _module_preset=”default” locked=”off” global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_divider][et_pb_heading title=”Mass flow control inside the hazardous zone” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h2″ locked=”off” global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” locked=”off” global_colors_info=”{}” theme_builder_area=”post_content”]Alicat intrinsically safe controllers<\/a> are built for direct installation:<\/p>\n No purge gas. No split architecture.<\/p>\n The result is simpler P&ID design: Fewer failure points, faster commissioning.[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||3rem||false|false” custom_padding=”0px||0px||true|false” locked=”off” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_column type=”4_4″ _builder_version=”4.27.6″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_heading title=”Mass flow meters and controllers For C1D1, Zone 0, or Zone 1 hazardous gas areas ” module_class=”showcase-product-header” _builder_version=”4.27.6″ _module_preset=”default” title_level=”h4″ title_font=”||||||||” custom_margin=”||1rem||false|false” global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_code _builder_version=”4.27.7″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”] \t\t\n
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\n
\n
\nacetylene
\nhydrogen
\nethylene
\nmethane
\npropane” _builder_version=”4.27.7″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][\/dvmd_table_maker_item][dvmd_table_maker_item col_label=”group” col_content=”group
\na
\nb
\nc
\nd
\nd” _builder_version=”4.27.7″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][\/dvmd_table_maker_item][dvmd_table_maker_item col_label=”storage method” col_content=”storage method
\ndissolved in acetone, porous cylinder
\ncompressed or cryogenic
\ncompressed or liquefied
\ncompressed or liquefied
\nliquefied gas under pressure” _builder_version=”4.27.7″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][\/dvmd_table_maker_item][dvmd_table_maker_item col_label=”pressure concern” col_content=”pressure concern
\nunstable above ~15 psig
\nvery low ignition energy
\nlower ignition margin than group d
\nstandard pressure behavior
\npressure tied to temperature” _builder_version=”4.27.7″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][\/dvmd_table_maker_item][dvmd_table_maker_item col_label=”flow concern” col_content=”flow concern
\nrequires flashback prevention
\ndiffuses rapidly, leaks easily
\nrequires stable, precise control
\nlarge volume flow control
\nphase change impacts regulators” _builder_version=”4.27.7″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][\/dvmd_table_maker_item][dvmd_table_maker_item col_label=”primary risk driver” col_content=”primary risk driver
\ndecomposition under pressure<\/a>
\nignition + containment difficulty<\/a>
\nreactive process sensitivity<\/a>
\naccumulation and dispersion<\/a>
\npooling and phase behavior” _builder_version=”4.27.7″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][\/dvmd_table_maker_item][\/dvmd_table_maker][et_pb_heading title=”One-line selection logic with flow control implications” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h2″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” global_colors_info=”{}” theme_builder_area=”post_content”]acetylene → design around decomposition risk\u00a0→ prevent reverse flow and shock<\/p>\n
\nignition sensitivity
\nstorage constraint
\npressure risk
\nflow requirement” _builder_version=”4.27.7″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][\/dvmd_table_maker_item][dvmd_table_maker_item col_label=”group a (acetylene)” col_content=”group a (acetylene)
\nextreme
\nspecialized only
\npressure itself hazardous
\nprevent reverse flow” _builder_version=”4.27.7″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][\/dvmd_table_maker_item][dvmd_table_maker_item col_label=”group b (hydrogen)” col_content=”group b (hydrogen)
\nextreme
\nhigh-integrity containment
\nleak-driven hazard
\nfast, leak-sensitive” _builder_version=”4.27.7″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][\/dvmd_table_maker_item][dvmd_table_maker_item col_label=”group c (ethylene)” col_content=”group c (ethylene)
\nmoderate
\nstandard
\nconventional
\nstable dosing” _builder_version=”4.27.7″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][\/dvmd_table_maker_item][dvmd_table_maker_item col_label=”group d (methane, propane)” col_content=”group d (methane, propane)
\nlower
\nstandard
\nconventional or temperature-led
\nsteady control” _builder_version=”4.27.7″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][\/dvmd_table_maker_item][\/dvmd_table_maker][et_pb_heading title=”Classification defines the system architecture” _builder_version=”4.27.7″ _module_preset=”default” title_level=”h2″ global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.7″ _module_preset=”default” custom_margin=”||2rem||false|false” locked=”off” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n\n
\n