Fluid Controls Ltd is one of the UK’s leading distributors for pressure control
Back pressure regulators

Pressure regulator frequently asked questions

If you need more information about pressure regulating valves for water applications or you would like to know more about how an air pressure regulator valve works, you’ve come to the right place. Here, Fluid Controls answers your most frequently asked questions about pressure regulator valves.

What types of pressure regulators are there?

Fluid Controls offers various types of pressure regulators for use with liquid and gas applications including:

  • Instrumentation regulators – Options include threadless, spring loaded or negative pressure regulators from Thomson Valves, Dutch Regulators, Parker’s Porter Instrumentation Division and Parker Veriflo.
  • Dome loaded and air loaded regulators – Supplied by leading manufacturers, Thomson Valves, part of the prestigious IMI Precision Engineering family of manufacturers.
  • Sanitary and pharmaceutical regulators – Supplied by leading manufacturers, Steriflow, a division of Jordan Valve. Ideal for the maintenance of sanitary conditions.
  • Filter regulators – Options include stainless steel Parker Filter Regulators and a combination of Norgren Filter Regulators. They offer a quick response that meets the demands of the most difficult industrial air preparation applications.
  • Proportion air pilot operated regulators – Suitable for a variety of applications, specifically for extremely low pressure, high pressure and high flow rate applications.
  • Back pressure regulators – Options include piston style regulators, spring loaded and dome loaded regulators.
  • Blanketing and low pressure regulators – Supplied by leading manufacturer, Jordan Valve. Ideal for tank blanketing, gas meter inlet pressure regulating, gas burners and other low pressure air and gas applications.
  • Electronic regulators – Supplied by prestigious manufacturers, Proportion-Air and Parker Lucifer. Options include double loop control electronic pressure regulators and electro-pneumatic pressure regulators from Parker EPP.
  • Proportion air steam regulators – Suitable for producing steam for delivery at high pressure through a distribution network.

air pressure regulator valve

How does a pressure regulator work?

Pressure regulators are valves that automatically cut off the flow of a gas or liquid when it reaches a set pressure. The main function of a pressure regulator is to match the flow of gas or liquid whilst maintaining a constant output pressure.

The main function of the pressure regulator is to match the flow of liquid or gas through the application. To do this, the pressure regulator must respond to any changes to the flow load. If the flow load increases, then the regulator must also increase its own flow rate. Equally, if the flow load decreases, the pressure regulator must also decrease its flow rate. This ensures that the pressure in the application remains controlled. A pressure regulator works by reducing the supply (or inlet) pressure to the lower outlet. It will then maintain the lower outlet pressure, despite any fluctuations in the inlet pressure.

Air pressure regulator and how it works

Air pressure regulators work by passing air from the filtering chamber through the diaphragm and out of the vent. This maintains a balanced pressure across the diaphragm, by moving the range spring which holds down the diaphragm until the output pressure is high enough to lift it.

Air pressure regulators are widely used in pneumatics and are used to control the pressure of instrument air. This is required to power components such as power valve actuators, transmitters, controllers and control valves.

How do fluid pressure regulators work?

Fluid Controls supplies some of the very best pressure regulating valves for water from Bürkert. These fluid pressure regulating valves work on the principle of reducing pressure. They are made up of a housing, piston or diaphragm valve and an adjustable spring that maintains a constant pressure through the application. Pressure regulating valves for water are ideal for use in drinking water systems and various other industrial applications, such as pharmaceutical, waste water and power industries.

Fluid pressure regulators are used in hydraulic power systems to maintain a safe and efficient pressure level. In hydraulic power systems, fluid pressure regulators unload the fluid pump and regulate the operating pressure.

How do electronic air pressure regulators work?

Electronic air pressure regulators are used to increase or decrease gas pressure to maintain correct pressure. Electronic air pressure regulators use a solenoid valve to maintain the correct pressure for each application. They work by using a push valve and vent valve to maintain the outlet pressure at the desired pressure point. A digital controller adjusts the timing of the solenoid valve to maintain this pressure point.

If you’re ready to include pressure regulators in your plant, contact Fluid Controls on 0118 970 2060 or email fluid@fluidcontrols.co.uk for more information.

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