Back pressure regulators

Back pressure regulators are essential components in fluid control systems, designed to control and maintain a specific pressure level on the upstream side of a system, often used in various industrial processes. Back pressure regulators are also known as relief regulators, excess pressure regulators and surplus usage regulators. These regulators are used to maintain a set pressure level in a system by relieving excess pressure. They work to control the back pressure in pipelines and systems. A back pressure regulator has a similar function to a safety valve with the difference that the back pressure regulator provides much more precise control in the process.

Ramén Valves offer a wide range of back pressure regulators from Cashco suitable for various industries and applications, including chemical processing, oil and gas, pharmaceuticals and more.

Difference between back pressure regulators and safety valves

Back pressure regulators act to control the pressure on the inlet or upstream by maintaining a constant pressure at the inlet of the regulator. They can be used to relief pressure but should not be confused with a safety relief valve. The difference is that a safety relief valve will snap open when the pressure builds up to whatever its set point is and is normally sized to pass the required flow with no more than a 10% over pressure. 

An example would be if the set point of the safety relief valve were 10 barg. When the pressure in the system build up to 10 barg the safety relief valve would pop open and pass the required flow before the pressure exceeded 11 barg. (10 barg x 1.10)A back-pressure regulator is a throttling device and as such it will gradually open and close to control the pressure of the fluid. Many times, a back-pressure regulator is installed in a parallel line with a safety relief valve and is set at a pressure just below the trip point of the safety valve. Its job is to open and close to handle any upset condition’s, without compromising the purpose of the safety relief valve, which may be a code requirement of the process.

Common applications

One of the most common applications of the back-pressure regulator is as a pump recirculation valve. Centrifugal pumps are used throughout the processing industry and to run the pump at its (B.E.P) Best Efficiency Point means that in many cases the pump is providing more fluid than the process requires.As the usage rate of the system changes the back-pressure regulator will open and close to recirculate the excess fluid back to a storage tank, thus keeping the pump running at its B.E.P.

Back pressure regulators
List view Grid view


  1. List price: 
    Login to view contract pricing
No products are matching the selection