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Pressure

Main image - Alicat PCD series dual valve pressure controller Pressure controllers
Main image - Back Pressure Regulator Back pressure regulators
Main image - PCT Z series pressure transmitters Pressure transmitters
Main image - dra_500.jpg Pressure regulators
Main image - PCT Pressure gauge with 100mm diameter Pressure gauges

Pressure products to satisfy a range of applications

Our comprehensive range of pressure products spans mechanical pressure switches to electronic pressure control. Alicat pressure products include standard pressure transducers and more advanced pressure controllers for use with your standard, vacuum, differential, closed loop and closed volume pressure applications. Dual valve pressure controllers are able to vent pressure within your process to offer no overshoot of system pressure.

Drastar's single and two-stage pressure regulation offers both high and low pressure processes covering a wide range of flow rates.

Our range of pressure transducers and transmitters cover many different industries, from OEM applications to high-end food and pharmaceutical applications. We offer many process connections, diaphragm seals and a complete range of analogue output signals and digital communications should your application require it.

Mechanical pressure gauges come in many shapes and sizes and we can build to your specification.

Our range of Back pressure regulators from Equilibar offer a variety of applications which include vacuum, industrial, high temperature, sanitary, general use as well as for research and development.

Measurement & control solutions for UK & Ireland

Whether you’re stabilising a reactor loop, holding a membrane dP, reducing steam header pressure, or just logging a clean 4–20 mA to a PLC, getting pressure right determines uptime, yield and safety. PCT supplies closed‑loop electronic pressure controllers, back‑pressure regulators, self‑operated/air‑loaded pressure regulators, and transmitters/gauges—with UK‑based engineering and service support.

Technologies we offer

Pressure controllers (closed loop & flowing)

What they are

Electronic controllers that measure and actively control pressure—either in flowing lines or closed volumes—with single valve (forward or back pressure) or dual valve architectures for bidirectional control/vent. Remote sense ports let you control pressure exactly at the point of interest, removing line losses. Typical control responses are ≈30–100ms with tuneable PID and multi protocol comms.

Fast, stable control in flowing lines or closed volumes; dual valve models minimise bleed gas and overshoot; remote sense for at point control; broad comms (EtherNet/IP, EtherCAT, Modbus, PROFIBUS/NET).

PCT examples

Alicat PC/PCS/PCR (single valve) and PCD/PCRD (dual valve) families—covering absolute/gauge/differential ranges, flowing or closed volume control, and industrial buses (EtherNet/IP, EtherCAT, Modbus, PROFIBUS).

Back pressure regulators (BPRs)

What they are

Devices that hold upstream pressure constant by opening only as much as needed to maintain setpoint. Equilibar BPRs use a frictionless diaphragm as the only moving part over a multi orifice seat—giving ultra stable control from very low flows to industrial line sizes, including two phase and high temperature service. Sanitary and single use versions are available.

Frictionless diaphragm design; instant response; handles two phase, viscous and supercritical media; sanitary & single use biopharm variants; industrial designs up to large line sizes and Class 150/300.

PCT examples

Equilibar Research/HT (lab & high temp), FD (sanitary, ASME BPE aligned), SD (single use), GSD/BD/IC (general & industrial service up to ANSI Class 150/300).

Pressure reducing vs back pressure

PRVs reduce a higher inlet to a controlled downstream pressure; BPRs sustain a controlled upstream pressure—open only to relieve excess.

Pressure regulators (pressure reducing regulators/PRVs)

What they are

Self operated or air loaded mechanical regulators that reduce supply down to a stable downstream setpoint with low noise and minimal droop. Sliding gate trim is a proven choice on steam and utilities thanks to short stroke, straight through flow and quiet, accurate control.

Self operated Mark 60 for steam/gas/liquid utilities; air loaded/piloted options (Mark 66/67) for remote setpoint & DCS; quiet operation and low droop from sliding gate trim.

PCT examples

Jordan Valve Mark 60 (self operated PRV) and Mark 66/67 (air loaded/piloted PRV) for remote setpoint or DCS integration; large sizes/express options are available.

Pressure transmitters

What they are

Compact 4–20mA (and HART/RS 485) pressure/temperature transmitters for panel or field mounting; ideal for BMS/PLC integration, logging and alarms.

PCT examples

Status Instruments SEM710 pressure & temperature transmitter; paired SEM1600 isolator/signal conditioner for clean retransmission into PLCs or panel meters.

Pressure gauges

What they are

Mechanical dial gauges (often stainless) for local indication, commonly supplied factory fitted on cylinder and line regulators.

PCT examples

Factory fitted gauges on Drastar regulators (multiple ranges in psi/bar).

Frequently asked questions

PCT offers a comprehensive range of pressure instrumentation including pressure sensors, transmitters, controllers, and back pressure regulators. These products are used for accurate monitoring and control of gas or liquid pressures across various industries.
A pressure sensor detects pressure and converts it into an electrical signal, while a transmitter conditions and amplifies this signal for accurate communication with external systems such as PLCs or control panels.
A pressure controller actively adjusts system pressure using electronic feedback and a control valve or orifice. PCT’s pressure controllers can maintain stable setpoints and are often used in automated or closed-loop systems.
Our pressure solutions are used in analytical instruments, medical devices, semiconductor processing, chemical dosing, fuel cell research, food production, and other applications where precision control is essential.
Yes. Many of our pressure instruments are suitable for gas or liquid service. Materials and sensor designs vary depending on the media, so our team can help select the correct model for your application.
Yes. PCT supplies both manual and electronic back pressure regulators, ideal for maintaining pressure downstream of process equipment, especially in gas chromatography, reactors, and dosing systems.
Absolutely. Our pressure sensors and controllers support a variety of output formats including 4–20 mA, 0–5 VDC, RS485, Modbus, and other industrial communication protocols.
Yes. PCT provides both forward pressure and back pressure regulation solutions. Dual-loop or bidirectional systems can be configured for complete pressure control in complex applications.
Yes. Many of our electronic pressure controllers operate in closed-loop mode using internal sensors or external feedback. This ensures stable, accurate, and repeatable pressure control in dynamic systems.
Definitely. Our technical team can guide you through product selection, control architecture, and integration of pressure devices with your existing systems, whether you're developing a prototype or scaling up to production.

Help and advice

A member of our team will be happy to assist with any questions you may have.

Ask the team