Pressure regulators are used to reduce the pressure to a lower pressure sub-system or to regulate system pressure at the desired value.

Among the types of pressure regulators are back pressure, vacuum pressure, differential pressure, pressure-reducing and regulators for specific kinds of fluids like oil and fuel. The most important parameter to consider when specifying pressure regulators is the regulating or adjustment range.  This is the limit of adjustment control on the pressure range. 

 

Common media types includePressure Regulators:

  

  • Air
  • Fuel and oil
  • Gas
  • Hydraulic fluids
  • Liquid
  • Steam

Types

 

Pressure regulator types include:

  

  • Pressure RegulatorsPressure balancing valves maintain even pressure when there is a pressure drain on the system.  Example: a balancing valve prevents surges of hot or cold water in a water supply system when one of the lines is used. 
  • General purpose regulators are designed for typical industrial use; generally operates only above atmospheric pressure. 
  • High pressure regulators are rated for inlet pressures higher than general purpose typically over 1000 psi. 
  • Low pressure regulators have special design characteristics for precise control of pressures typically below 15 - 20 psi. 
  • In a Vacuum or compound regulator the regulator is designed to control fluid below atmospheric pressure; also known as "Absolute Pressure Regulator". 
  •  A Differential or bias regulator maintains a pressure differential between two locations in the system. 
  • In a pressure-reducing regulator pressure-reducing valves are used to provide a sub-circuit with a supply of fluid at a pressure, which is less than the pressure in the main circuit. 
  •  A Point of use regulator designed to attach at or near a tool or device.

The body of pressure regulators can be made from acetal, aluminum, brass, bronze, cast iron, steel, stainlessPressure Regulators steel, and zinc. 

 

Common connectors can be from 1/8” NPT to 2” NPT, British standard pipe thread and metric pipe thread.  Mounting types for pressure regulators include cartridge, pipe or line mount, stacked or switch mount, and subplate or manifold mount.

  

Features

  

Common features for pressure regulators include:

  

  • Pressure RegulatorsIntegral pressure gauges display system pressures. 
  • Integral filters are for the fluid intakes. 
  • Integral lubricators are for valve operation. 
  • Pressure reliefs are a provision for bleeding off pressure at regulator. 
  • Tamper-proof pressure regulators have a security device to prevent unwanted adjustment (lock, removable adjustor, etc.). 

  

   

 Related Standards

  

References

  

Image Credit: Air Logic | Applied Industrial Technologies | Armstrong International | Barksdale Control Products

   

  

Read user Insights about Pressure Regulators

Related Products & Services

  • Butterfly Valves

    Butterfly valves control flow through a circular disc or vane by turning the valve's pivot axis at right angles to the direction of flow in the pipe. They are normally used as throttling valves to control flow.

  • Check Valves

    Check valves are self-activating safety valves that permit gases and liquids to flow in only one direction, preventing process flow from reversing. They are classified as one-way directional valves. 

  • Globe Valves

    Globe valves are linear motion valves with rounded bodies, from which their name is derived.  They are widely used in industry to regulate fluid flow in both on/off and throttling service. 

  • Needle Valves

    Needle valves are small valves used for flow control in liquid or gas services. The fine threading of the stem and the large seat area allow for precise resistance to flow.

  • Pinch Valves

    Pinch valves include any valve with a flexible elastomer body that can be pinched closed, cutting off flow, using a mechanism or fluid pressure.

  • Solenoid Valves

    Solenoid valves are devices that use a solenoid to control valve activation.

  • Solids Valves

    Solids valves are used to control or regulate the flow of powder, granular and other bulk solid materials along a process line, or to and from process units, storage bins, conveyors and product packaging.