Industrial Back Pressure Regulators for High Flow from Equilibar

Back Pressure Valve for High Flow

Larger sizes - from 1.5" to 4" - Low to Medium Pressure

Equilibar offers a unique back pressure valve that offers lightning fast response. By using a friction-less diaphragm and dome-loaded design, precision can be maintained across a very wide range of flow rate.

NLB Series Back Pressure Valve

BD Series
High Flow / Medium Pressure Valves
Line size 1½” to 4″
SS316, PVC or PVDF
Maximum Pressure of 1000 psig / 69 bar(g)
Maximum Cv of 160

HV Series Back Pressure Valve

HV Series
Maximum Flow / Low Pressure Valves
Line size 2″ to 6″
Available in SS304 & SS316
Maximum Pressure of 10 inWC

How it Works

Equilibar’s back pressure valves function by use of a compressible gas set-point on their top pilot port. For example, if you want to control 100 psig / 69 bar(g) on the inlet port of the valve, simply apply a 100 psig / 6.9 bar(g) set-point of air or other gas to the dome.

The frictionless diaphragm blocks flow in the lower position until the inlet pressure rises to raise the diaphragm.

Unlike traditional back pressure valve designs, the unique Equilibar can respond to severe system fluctuations within milliseconds.

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The HV Series Back Pressure Control Valve controls pressure directly by matching the inlet pressure to the pilot pressure level.

Equilibar’s unique back pressure valve uses multiple orifices that serve as distributed valve seats. The flexible diaphragm lifts to allow flow, but only enough to maintain the desired back pressure on the valve inlet.

Equilibar News
valve mag featuring Equilibar

Valve Magazine features overview of Equilibar® technology

The summer 2022 issue of Valve Magazine includes a comprehensive overview of the direct sealing diaphragm valve technology that is at the core of Equilibar’s patented devices.  Written by Equilibar founder Jeff Jennings, the article explains the background of this unique method of fluid control and describes how it is capable of providing robust back Read More

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