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Alicat PC3 PCR3 - Single Valve Pressure Controller

  • Available for gauge and absolute pressures up to 3000 PSI / 207 Bar
  • Differential pressures up to 100 PSI / 7 Bar
  • 50-100 ms speed of response stills upstream fluctuations
  • Up to ±0.125% of full scale accuracy
  • No warm-up time required

Fast-responding pressure control, anywhere you need it

Alicat PC3 and PCR3 series of pressure controller incorporates a remote sensor port onto the body on the instrument. This allows for a remote pressure signal to be sent from a point upstream or downstream of the controller. The remote sense port allows precise control of pressure in areas that are either hard to reach or in which pressure control equipment cannot be directly installed. This yields faster and more precise targeting of the pressure being controlled, without being affected by flow-induced pressure changes that may occur inside the controller.

The PC3 and PCR3 series pressure controllers are repeatable and accurate with calibrations up to ±0.125% of full scale accuracy.

PC3 series controllers have a 1/8” NPT female connection and are typically suited to low flow pressure applications, whilst PCR3 controllers feature a ¾” NPTF connection and are for applications where the flow rate exceeds 20 LPM. Both series also offer as standard a 1/8” NPT female remote sense port, ask about other sizes if required.

Every device has a 200:1 turndown ratio with many standard pressure ranges available, standard pressure units include PSIA, PSIG, mmHG, inHG, inH2O, mBar, Atm, Torr and kPa.

The Alicat pressure controller features a local LCD screen and push button user interface to change process variables. A colour TFT display is also an option too. RS-232 communications are standard as well as an analogue output signal such as 0-5 Vdc. Modbus-RTU, available over RS-232 or RS-485 and PROFIBUS protocols are available.

Every Alicat single valve pressure controller is backed by the manufactures limited life time warranty and ships with a NIST traceable calibration certificate.

PC3 and PCR3 series can also be ordered as a PCS3 or PCRS3 for aggressive applications.

Other features

  • Downstream valve, optimizes control for backpressure applications
  • Optional ATEX Zone 2 Area Classification, permits operation in hazardous environments (Ex nA IIC, T4 Tamb. -40°C ≤ Ta ≤ +50°C).
  • 9-pin or 15-pin D-sub connectors, configured to match any existing pinout
  • Accessible PID valve tuning for best speed and stability
  • Custom valve orifice sizing yields full-range stability


The Alicat PC3 PCR3 - Single Valve Pressure Controller is widely used in the following industries:

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