Our family of brands includes the accurate, repeatable, customizable proportional electro-pneumatic pressure and flow control options of our flagship brand, Proportion-Air; industrial process control valves with large CVs, easy in-line maintenance and fast delivery of Burling Valve; and affordable, preset, tamper-proof miniature regulators from Protect-Air USA.

These lines offer products that are excellent alone or can work together to meet your most exacting needs. Contact our Applications Team for expert support in choosing the right product or assembly.


Pressure Regulators

Electronic, mechanical and miniature options from 0-2″ H2O to 5000 psi+Learn More

Mass Flow Control Valves

Closed-loop electronic mass flow controllers for flow rates from 2 SCFH to 250 SCFMLearn More

Pressure Transducers

Accurately measure the pressure of gases and/or fluids in industrial and laboratory processesLearn More

Legacy Products

Discontinued or will be retired soonLearn More

Control Valve Accessories

Get the right additional parts for a successful applicationLearn More

Quick Ship Products

Order online todayLearn More