Pressure Controllers & Transducers

Pressure Controllers for Closed Volumes

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 with remote sensors that can be plumbed to any point in your process. Each pressure controller is compatible with non-corrosive gases, and anti-corrosive models are available for use with corrosive gases or liquids.

Check out the model pages for more product details and learn about our many custom build and performance options.

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Below are resources to make finding the right solution for your application easier. If you need additional support, please reach out to our applications engineers.

Model comparison: Alicat device guide

Not sure which device will work best for your application? This guide describes our product lines to assist you in choosing the model that best fits your use case.

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Device comparison: Absolute or gauge

Instruments are able to control pressure in reference to local barometric pressure (gauge) or to vacuum (absolute). Which is right for your application?

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Tech comparison: Types of pressure controllers

There are many different methods to and reasons for controlling pressures. Here we present a brief overview of these methods and the intended goals of each.

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PCD-Series Dual Valve Absolute and Gauge Pressure Controllers use two proportional valves to precisely control the absolute or gauge pressure of gases within closed or dead-ended volumes.

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An Alicat pressure controller, 50 SCCM full scale, with a digital screen and standard valve, model PC-5PSIG-D, photographed by Alicat

PCD3-Series Dual Valve Absolute and Gauge Pressure Controllers with Remote Sensing use two proportional valves and a physically isolated pressure sensor to maintain pressure at any point within a dead-ended volume.

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Photo of Alicat PCD3-Series dual valve gauge pressure controller

EPCD-Series Dual Valve OEM 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.

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Alicat EPCD dua-valve electronic pressure controller for OEMs

PCD-Series Dual Valve Differential Pressure Controllers use two proportional valves to maintain differential pressure between any two points in processes flowing gases within dead-ended volumes.

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Alicat PCD dual-valve differential pressure controller with optional panel mount display

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