Pressure controllers for closed volumes
Dual-valve pressure controllers from Alicat eliminate the need for a bleed valve for pressure control in closed or dead-ended volumes. They are available with internal pressure sensors or remote sensors that can be plumbed to any point in your process.
Absolute or gauge pressure
PCD-series absolute or gauge pressure controllers contain pressure sensors that are referenced to vacuum (absolute) or to local barometric pressure (gauge). In addition to inlet and outlet ports, a third process port connects the sensor to your closed volume. PCD3-series absolute or gauge pressure controllers have flow paths that are isolated from their pressure sensors. In addition to the process port, an external pressure sense port can be plumbed to measure pressure directly from any point in your closed system.
The EPCD series compacts our dual-valve PCD series absolute or gauge pressure controller into a bare-bones form factor that is ideal for OEM applications and large-quantity orders.
Differential pressure
PCD-series differential pressure controllers maintain a constant pressure differential between their two measurement ports. Like the PCD3 above, each of the two pressure measurement ports of the differential pressure controller can be plumbed to any point in your process.
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PCD–Dual Valve Absolute and Gauge Pressure Controllers
Fast-responding pressure or vacuum control for closed volumes
Control the absolute pressure (referenced to vacuum) or gauge pressure (referenced to local barometric pressure) of gases or liquids in your process. Alicat’s PCD series dual-valve pressure controllers use two proportional valves to precisely control the pressure of gases within closed or dead-ended volumes. They achieve new setpoints rapidly and stay put, even in the face of uneven feed pressure or changing temperatures. We’ll use your application parameters to customize your valve and PID tuning to ensure that your controller delivers fast and stable control.
- Fast & Accurate. Very fast valves and PID control algorithms hit pressure setpoints in milliseconds with NIST-traceable accuracy.
- Connected. Easy integration into your digital industrial network with Ethernet/IP, EtherCAT, DeviceNet, Profibus, Modbus (RTU and TCP/IP) or serial communications options.
- Efficient. The dual-valve design incorporates a second proportional valve to exhaust excess pressure, but only when needed to maintain your setpoint. This eliminates the need to continuously bleed costly gas.
Alicat’s PCD series uses small proportional valves for control at lower flow rates and is suitable for use with non-corrosive gases.
Absolute Pressure:
PCD-10TORRA-D (IVC for vacuum)
PCD-100TORRA-D (IVC for vacuum)
PCD-15PSIA-D
PCD-30PSIA-D
PCD-100PSIA-D
PCD-500PSIA-D
PCD-1000PSIA-D
PCD-1500PSIA-D
PCD-2000PSIA-D
PCD-3000PSIA-D
Gauge Pressure:
PCD-2INH2OG-D
PCDAS-1PSIG-D
PCD-1PSIG-D
PCD-5PSIG-D
PCD-15PSIG-D
PCD-30PSIG-D
PCD-100PSIG-D
PCD-500PSIG-D
PCD-1000PSIG-D
PCD-1500PSIG-D
PCD-2000PSIG-D
PCD-3000PSIG-D
Alicat’s PCDP series offers the largest orifice in a small valve format and is suitable for use with non-corrosive gases.
Absolute Pressure:
PCDP-15PSIA-D
PCDP-30PSIA-D
PCDP-100PSIA-D
Gauge Pressure:
PCDP-2INH2OG-D
PCDPAS-1PSIG-D
PCDP-1PSIG-D
PCDP-5PSIG-D
PCDP-15PSIG-D
PCDP-30PSIG-D
PCDP-100PSIG-D
Alicat’s PCDH series pairs two small valves working side-by-side as one and is suitable for use with non-corrosive gases.
Absolute Pressure:
PCDH-15PSIA-D
PCDH-30PSIA-D
PCDH-100PSIA-D
PCDH-500PSIA-D
Gauge Pressure:
PCDH-2INH2OG-D
PCDHAS-1PSIG-D
PCDH-1PSIG-D
PCDH-5PSIG-D
PCDH-15PSIG-D
PCDH-30PSIG-D
PCDH-100PSIG-D
PCDH-500PSIG-D
Alicat’s PCRD series uses nearly frictionless Rolamite valves and a variety of orifice patterns for control at high flow rates and is suitable for use with non-corrosive gases.
Absolute Pressure:
PCRD-10TORRA-D (IVC for vacuum)
PCRD-100TORRA-D (IVC for vacuum)
PCRD-15PSIA-D
PCRD-30PSIA-D
PCRD-100PSIA-D
PCRD-500PSIA-D
Gauge Pressure:
PCRD-2INH2OG-D
PCRDAS-1PSIG-D
PCRD-1PSIG-D
PCRD-5PSIG-D
PCRD-15PSIG-D
PCRD-30PSIG-D
PCRD-100PSIG-D
PCRD-500PSIG-D
Alicat’s PCDS series uses small proportional valves for control at lower flow rates and is suitable for use with liquids and corrosive gases.
Absolute Pressure:
PCDS-30PSIA-D
PCDS-100PSIA-D
PCDS-500PSIA-D
PCDS-1000PSIA-D
PCDS-1500PSIA-D
PCDS-2000PSIA-D
PCDS-3000PSIA-D
Gauge Pressure:
PCDS-5PSIG-D
PCDS-15PSIG-D
PCDS-30PSIG-D
PCDS-100PSIG-D
PCDS-500PSIG-D
PCDS-1000PSIG-D
PCDS-1500PSIG-D
PCDS-2000PSIG-D
PCDS-3000PSIG-D
Alicat’s PCDHS series is suitable for use with liquids and corrosive gases and pairs two valves working side-by-side as one to provide greater control at higher pressures.
Absolute Pressure:
PCDHS-30PSIA-D
PCDHS-100PSIA-D
PCDHS-500PSIA-D
Gauge Pressure:
PCDHS-5PSIG-D
PCDHS-15PSIG-D
PCDHS-30PSIG-D
PCDHS-100PSIG-D
PCDHS-500PSIG-D
Alicat’s PCRDS series is suitable for use with liquids and corrosive gases and uses nearly frictionless Rolamite valves and a variety of orifice patterns for control at high flow rates.
Absolute Pressure:
PCRDS -30PSIA-D
PCRDS -100PSIA-D
PCRDS -500PSIA-D
Gauge Pressure:
PCRDS -5PSIG-D
PCRDS -15PSIG-D
PCRDS -30PSIG-D
PCRDS -100PSIG-D
PCRDS -500PSIG-D
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PCD3–Dual Valve Absolute and Gauge Pressure Controllers with Remote Sensing
Closed-volume pressure or vacuum control, anywhere you need it
Measure absolute or gauge pressure at any point in your closed process volume, and control flow at a different point to ensure your pressure stays on target. Alicat’s PCD3 series dual-valve pressure controllers use two proportional valves to precisely control the pressure of gases within dead-ended volumes and physically isolates the pressure sensor from the valve and flow path so that you can control pressure exactly where you need it. This allows pressure control in areas where you cannot easily install a full pressure controller and reduces the effects of flow-induced pressure changes in high-flow applications. We’ll use your application parameters to customize your valve and PID tuning to ensure that your controller delivers fast and stable control.
- Fast & Accurate. Very fast valves and PID control algorithms hit pressure setpoints in milliseconds with NIST-traceable accuracy.
- Connected. Easy integration into your digital industrial network with Ethernet/IP, EtherCAT, DeviceNet, Profibus, Modbus (RTU and TCP/IP) or serial communications options.
- Efficient. The dual-valve design incorporates a second proportional valve to exhaust excess pressure, but only when needed to maintain your setpoint. This eliminates the need to continuously bleed costly gas. Plumb the pressure sense port wherever you need to control pressure.
Alicat’s PCD3 series uses small proportional valves for control at lower flow rates and is suitable for use with non-corrosive gases.
Absolute Pressure:
PCD3-10TORRA-D (IVC for vacuum)
PCD3-100TORRA-D (IVC for vacuum)
PCD3-15PSIA-D
PCD3-30PSIA-D
PCD3-100PSIA-D
PCD3-500PSIA-D
PCD3-1000PSIA-D
PCD3-1500PSIA-D
PCD3-2000PSIA-D
PCD3-3000PSIA-D
Gauge Pressure:
PCD3-2INH2OG-D
PCD3AS-1PSIG-D
PCD3-1PSIG-D
PCD3-5PSIG-D
PCD3-15PSIG-D
PCD3-30PSIG-D
PCD3-100PSIG-D
PCD3-500PSIG-D
PCD3-1000PSIG-D
PCD3-1500PSIG-D
PCD3-2000PSIG-D
PCD3-3000PSIG-D
Alicat’s PCDP3 series offers the largest orifice in a small valve format and is suitable for use with non-corrosive gases.
Absolute Pressure:
PCDP3-15PSIA-D
PCDP3-30PSIA-D
PCDP3-100PSIA-D
Gauge Pressure:
PCDP3-2INH2OG-D
PCDP3AS-1PSIG-D
PCDP3-1PSIG-D
PCDP3-5PSIG-D
PCDP3-15PSIG-D
PCDP3-30PSIG-D
PCDP3-100PSIG-D
Alicat’s PCDH3 series pairs two small valves working side-by-side as one and is suitable for use with non-corrosive gases.
Absolute Pressure:
PCDH3-15PSIA-D
PCDH3-30PSIA-D
PCDH3-100PSIA-D
PCDH3-500PSIA-D
Gauge Pressure:
PCDH3-2INH2OG-D
PCDH3AS-1PSIG-D
PCDH3-1PSIG-D
PCDH3-5PSIG-D
PCDH3-15PSIG-D
PCDH3-30PSIG-D
PCDH3-100PSIG-D
PCDH3-500PSIG-D
Alicat’s PCRD3 series uses nearly frictionless Rolamite valves and a variety of orifice patterns for control at high flow rates and is suitable for use with non-corrosive gases.
Absolute Pressure:
PCRD3-10TORRA-D (IVC for vacuum)
PCRD3-100TORRA-D (IVC for vacuum)
PCRD3-15PSIA-D
PCRD3-30PSIA-D
PCRD3-100PSIA-D
PCRD3-500PSIA-D
Gauge Pressure:
PCRD3-2INH2OG-D
PCRD3AS-1PSIG-D
PCRD3-1PSIG-D
PCRD3-5PSIG-D
PCRD3-15PSIG-D
PCRD3-30PSIG-D
PCRD3-100PSIG-D
PCRD3-500PSIG-D
Alicat’s PCDS series uses small proportional valves for control at lower flow rates and is suitable for use with liquids and corrosive gases.
Absolute Pressure:
PCD3S-30PSIA-D
PCD3S-100PSIA-D
PCD3S-500PSIA-D
PCD3S-1000PSIA-D
PCD3S-1500PSIA-D
PCD3S-2000PSIA-D
PCD3S-3000PSIA-D
Gauge Pressure:
PCD3S-5PSIG-D
PCD3S-15PSIG-D
PCD3S-30PSIG-D
PCD3S-100PSIG-D
PCD3S-500PSIG-D
PCD3S-1000PSIG-D
PCD3S-1500PSIG-D
PCD3S-2000PSIG-D
PCD3S-3000PSIG-D
Alicat’s PCDH3S series is suitable for use with liquids and corrosive gases and pairs two valves working side-by-side as one to provide greater control at higher pressures.
Absolute Pressure:
PCDH3S-30PSIA-D
PCDH3S-100PSIA-D
PCDH3S-500PSIA-D
Gauge Pressure:
PCDH3S-5PSIG-D
PCDH3S-15PSIG-D
PCDH3S-30PSIG-D
PCDH3S-100PSIG-D
PCDH3S-500PSIG-D
Alicat’s PCRD3S series is suitable for use with liquids and corrosive gases and uses nearly frictionless Rolamite valves and a variety of orifice patterns for control at high flow rates.
Absolute Pressure:
PCRD3S-30PSIA-D
PCRD3S-100PSIA-D
PCRD3S-500PSIA-D
Gauge Pressure:
PCRD3S-5PSIG-D
PCRD3S-15PSIG-D
PCRD3S-30PSIG-D
PCRD3S-100PSIG-D
PCRD3S-500PSIG-D
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PCD–Dual Valve Differential Pressure Controllers
Closed-volume differential pressure control
Measure the differential pressure between any two points in your closed process volume, and control flow at a different point to ensure the pressure differential remains constant. Alicat’s PCD series dual-valve pressure controllers use two proportional valves to precisely control the pressure of gases within dead-ended volumes. The two process ports connect to opposite sides of the differential pressure sensor; positive readings denote higher pressure at the left (upstream) process port, and negative readings denote higher pressure at the right (downstream) port. We’ll use your application parameters to customize your valve and PID tuning to ensure that your controller delivers fast and stable control.
- Fast & Accurate. Very fast valves and PID control algorithms hit pressure setpoints in milliseconds with NIST-traceable accuracy.
- Connected. Easy integration into your digital industrial network with Ethernet/IP, EtherCAT, DeviceNet, Profibus, Modbus (RTU and TCP/IP) or serial communications options.
- Efficient & Versatile. The dual-valve design incorporates a second proportional valve to exhaust excess pressure, but only when needed to maintain your setpoint. Plumb the two pressure ports wherever you need to measure and control the pressure difference. Or use the instrument as a gauge pressure controller by leaving the downstream port open to atmosphere.
Alicat’s PCD series uses small proportional valves for control at lower flow rates and is suitable for use with non-corrosive gases.
Differential Pressure:
PCD-2INH2OD-D
PCDAS-1PSID-D
PCD-1PSID-D
PCD-5PSID-D
PCD-15PSID-D
PCD-30PSID-D
PCD-100PSID-D
Alicat’s PCDP series offers the largest orifice in a small valve format and is suitable for use with non-corrosive gases.
Differential Pressure:
PCDP-2INH2OD-D
PCDPAS-1PSID-D
PCDP-1PSID-D
PCDP-5PSID-D
PCDP-15PSID-D
PCDP-30PSID-D
PCDP-100PSID-D
Alicat’s PCDH series pairs two small valves working side-by-side as one and is suitable for use with non-corrosive gases.
Differential Pressure:
PCDH-2INH2OD-D
PCDHAS-1PSID-D
PCDH-1PSID-D
PCDH-5PSID-D
PCDH-15PSID-D
PCDH-30PSID-D
PCDH-100PSID-D
Alicat’s PCRD series uses nearly frictionless Rolamite valves and a variety of orifice patterns for control at high flow rates and is suitable for use with non-corrosive gases.
Differential Pressure:
PCRD-2INH2OD-D
PCRDAS-1PSID-D
PCRD-1PSID-D
PCRD-5PSID-D
PCRD-15PSID-D
PCRD-30PSID-D
PCRD-100PSID-D
Alicat’s PCDS series uses small proportional valves for control at lower flow rates and is suitable for use with liquids and corrosive gases.
Differential Pressure:
PCDS-5PSID-D
PCDS-30PSID-D
PCDS-100PSID-D
Alicat’s PCDHS series is suitable for use with liquids and corrosive gases and pairs two valves working side-by-side as one to provide greater control at higher pressures.
Differential Pressure:
PCDHS-5PSID-D
PCDHS-30PSID-D
PCDHS-100PSID-D
Alicat’s PCRDS series is suitable for use with liquids and corrosive gases and uses nearly frictionless Rolamite valves and a variety of orifice patterns for control at high flow rates.
Differential Pressure:
PCRDS-5PSID-D
PCRDS-30PSID-D
PCRDS-100PSID-D
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EPCD–Dual Valve OEM Electronic Pressure Controllers
Essential pressure control for dead-ended OEM applications
Dual-valve electronic pressure controllers use two proportional valves to precisely control the pressure of gases within closed or dead-ended volumes. They are highly customizable for easy integration within original equipment manufacturer (OEM) products. Alicat’s EPCD delivers high accuracy and fast, droop-free closed-loop control in a compact, competitively-priced package.
- Repeatable. EPCD pressure regulators deliver NIST-traceable accuracy, reliable control and adjustable PID valve tuning to keep your product operation repeatable.
- Efficient. Waste no more. The dual-valve design incorporates a second proportional valve to release excess pressure, which eliminates the need to continuously bleed costly gas.
- Configurable. We can customize the valves, ports, sensors and communications to precisely suit your product design and application requirements.
Absolute Pressure:
EPCD-15PSIA
EPCD-30PSIA
EPCD-100PSIA
EPCD-300PSIA
Gauge Pressure:
EPCD-2INH2OG
EPCD-4INH2OG
EPCD-10INH2OG
EPCD-20INH2OG
EPCD-1PSIG
EPCD-5PSIG
EPCD-15PSIG
EPCD-30PSIG
EPCD-100PSIG
EPCD-300PSIG
