Onyx Valve Company

Onyx Valve Company, based in Cinnaminson, New Jersey, is an American manufacturer of pinch valves, duckbill check valves, and pressure sensor isolator rings with over two decades of experience in flow control. The company machines all valve castings and component parts in-house using CNC equipment to machine-tool tolerances, with every product designed, manufactured, and assembled domestically. Onyx offers four pinch valve configurations: pneumatic automatic (Series CHR, CHP), electric automatic (Series DHC, DHA, DHO), manual open-frame (Series DAC, GSS, GSF, GSD), and manual enclosed (Series CAR, CAP, DAO, CER, CEP, DEC). Their duckbill check valve lineup includes eight series—DBS, DBF, DBCP, DBRS, DBMJ, DBMJF, ILCV, and WCV—available in self-contained, external, and internal mounting styles for backflow prevention across varied piping arrangements. Onyx pressure instrumentation comprises four isolator ring models (PSW, PSR, PSS, PSQ), the Model K diaphragm seal, a calibrating machine, syringe kit, and the Smart Box 4 calibration system. A notable installation at Tampa Bay Water's regional facility features over 60 Onyx pinch valves. Markets served include water and wastewater treatment, biogas and landfill gas transport, mining, chemical processing, pulp and paper, dry material conveying, air pollution control, agriculture, food processing, and stormwater management.