Precision Back Pressure Regulators

Patented technology provides unparalleled precision and ease of automation

Equilibar introduces a new type of back pressure regulator with more than 5X the flow stability of traditional spring regulators. The dome-loaded design precisely matches your process pressure to a pilot set-point signal, even t hrough wide flow rate ranges.

The Equilibar® back pressure regulator uses a fully frictionless design that is dramatically more precise than ordinary back pressure regulators - especially in the low and medium pressure ranges.

This unique approach also provides much greater support for ultra low pressure applications and very low flow applications. The Equilibar® achieves its precision by providing a fluid set-point pressure to the top of the diaphragm.

The Equilibar® offers unmatched performance in very low pressure ranges, with excellent control down to about ½" water column (0.02 psi). It starts 1" water column (0.02 psi). Depending of flow and body size, it can easily achieve precision better than 0.25" water column (0.01 psi).

What other features make the Equilibar® unique?

• Springless; a special flexible diaphragm is the only moving part
• Compatible with problematic shear sensitive applications
• Simple, sanitary design compatible with pharmaceutical or food applications
• Extremely fast response
• Dampens system pulsations
• Reference pressure can be a second process fluid (fluid pressure balancing)

How can I use the Equlibar® to automate my process?

The Equilibar® excels at computer automation applications.  By connecting an electro-pneumatic transducer to the reference port, the Equilibar® allows your process computer to vary process pressure with precision to 0.01 psi!    This could be used for everything from simple flowrate control to controlling reactor conditions in a research environment.

An electronically controlled air pressure regulator acting as the pilot adds additional benefits. Porportion-Air's, MPV and QPV series control valves utilizing proportional valve technology, make ideal pilot regulator for Equilibar precision dome loaded regulators.