Low Pressure Control

The Equilibar® Precision Back Pressure Regulator offers unparalleled performance in the very-low pressure region.  The device is capable of matching process gas or liquid pressures to that of a pilot reference signal to within approximately 0.01 psi.  The regulator can be used to control back pressure down to approximately 0.02 psi.

This extraordinary precision makes the Equilibar® uniquely qualified for high precision / low-pressure applications in the both laboratory and industrial settings

Both the Equilibar® SC and GS Series back pressure regulators can be configured for very low pressure applications. Inform us of your desired application pressure range, and your product will be automatically configured with the most appropriate trim.


Extremely tight pressure control may be achieved using a delicate polyethylene diaphragm. Note that flow capacity is limited at the 1 inWC set-point.


To achieve this superior sensitivity, a standard body of the Equilibar is outfitted with a highly sensitive diaphragm suitable for the application.  Materials available include PTFE, polyolefin, Buna N, EPDM, and others.   Standard bodies come in SS316L, with PTFE and polypropylene also available.


For application assistance in choosing the body and diaphragm that best suits your unique needs please contact us.



We're always happy to discuss our extensive range of products, or your application.

Contact us on:





+44 (0) 2477671600


+353 (0) 860798070



RIBA - Type RP200 


Precision pressure regulator 1/8" connection


RP200 serves flow control up to 300 l/min.
The large control range from vacuum to 70 bar overpressure of this regulator facilitates a broad spectrum of applications.




Vacuum to High Precision

Back Pressure Regulators

Low flow to High flow

Wide range of materials of construction to meet specific application requirements




Resolutionair Pinch Valve

Proportional Pinch Valve step and motor Linear actuator technology .0005"/step linear travel.

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