Pressure Bypass Valves and Pressure Bypass Regulators

Controlling pump output

  • Pump-Bypass-Control_250

Pressure bypass valves serve to control pressure in a system by diverting a portion of the flow. Typically they bypass fluid from the outlet of a pump back to the reservoir.

A pressure bypass valve is essentially a back pressure regulator. They both control their inlet or upstream pressure and function by opening just enough to relieve excess pressure on their inlet port. These valves are referred to by different names based on subtle differences in the application or the industry

The schematic at right shows a Pressure Bypass Regulator being used to control the pressure at the exit of a pump. Note that the concept of pressure bypass control works equally well for all types of pumps (i.e. centrifugal pumps as well as positive displacement pumps).

Typical pressure bypass valves use a spring and piston design, and these work well for the most common industrial applications, including traditional hydraulic systems (find traditional pressure bypass valves here)

Precision Pressure Bypass Valves
for Demanding Applications

Equilibar offers a  unique back pressure regulator  that offers several distinct advantages for pressure bypass applications:

 

See  Product Details  for Equilibar’s back pressure valves and regulators for more information about available models and sizes.

The Equilibar®  precision back pressure regulator  can provide highly stable pressure control despite widely varying flow rates. Unlike pressure control valves, which typically require several seconds to adjust to changing flow conditions, the Equilibar has lightning fast response (less than 10 mS). Using the Equilibar, it is even possible to rapidly change system pressure and even generate  pressure patterns and pulse waveforms.

Equilibar back pressure regulators are currently provided in sizes up to 3″ pipe size. They can receive their 1:1 set-point signal from either manual air pressure regulators  or from  electronic pressure regulators. However, larger size regulators can be built upon request. Learn more about our unique  back pressure regulator technology and our  product details.

Contact our engineers  for additional information about your application.

 


1/2 inch pressure bypass valve

Equilibar precision pressure bypass valve shown in 1/2″ size with computer automated pilot regulator on top


Pump bypass control schematic

Pressure bypass regulator controlling pressure at the discharge of a pump.

 

diagram showing the<br /><br /><br /><br /><br /><br /><br /> Equilibar back pressure regulator used as pump bypass control service

The Equilibar precision back pressure regulator can provide pump bypass pressure control by using an air set-point signal provided by a manual or electronic pressure regulator ( details).

 

2 inch back pressure regulator from Equilibar

This larger 2″ Equilibar® pressure bypass valve can be piloted manually or electronically to provide accurate pump pressure control.

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