Onyx Valve is the leader in the design of heavy duty final control elements. Our products are ideally designed to handle all types of slurry services. Onyx features both drop tight on-off and modulating duty pinch valves. Along with the economic cost of these products, comes the ease of maintenance. Each valve is designed with an easily interchangeable sleeve, which is the only valve part that comes in contact with the process fluid. The design configurations for the Onyx Pinch valve are virtually unlimited, with the changes in enclosure, pinching mechanism, sleeve type, and actuation the possibilities are endless.

A major pinch valve manufacturer in South Jersey was bought out by a multi-national corporation which subsequently closed the operation in 1994.  Six former employees of this company started Onyx Valve Co. on May 1, 1995. Since then our customers have made us the fastest growing pinch valve company in the world. We have since expanded to a 50 person workforce allowing us to help lead flow control industry with using both innovative and simplistic techniques to fit each of our customer’s needs. All Onyx Valve products are designed and manufactured in our modern factory located in Cinnaminson, NJ. All our rubber pinch valve and check valve sleeves are made in-house to our exact specifications by the most experienced molders in the industry. Onyx Valve Company does all our machining of our valve castings and parts in-house using the most technologically advanced machines. Every valve component is designed and manufactured to the most accurate machine-tool tolerances. In addition to fabricating all our valves and pressure sensor ring components in-house, we also design and fabricate all the molds for our rubber components in-house as well. We pride ourselves on our dedication to our customer’s goals. Our people are Experienced Valve Engineers and they make things happen, and we can find a solution that works for almost any situation.

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The Onyx Isolator Ring is equipped with an integral block valve and module seal.

The bottom half of the Module Seal consists of a 1⁄2” thick rubber membrane at the top of the mounting post. This provides a hermetic seal for the Isolator Ring keeping the instrument oil in and the air out.

The top half of the Module Seal is the “Stinger Fitting” a brass or stainless steel fitting with a needle projecting out of the bottom.

Replacing the gauge without compromising the integrity of the vacuum fill – and without removing the Isolator ring from the process pipe – is simple:

1. Close the Block Valve.
2. Unscrew the Lock Ring.
3. Pull the gauge and stinger fitting out as a complete unit.
4. Plug the new gauge and stinger assembly into the Module Seal.
5. Re-tighten the Lock Ring.
6. Open the Block Valve.

Pressure Sensor PSW 

Pressure Sensor PSR

Pressure Sensor PSS

Pressure Sensor PSQ

Smart Box 4

Diaphragm Seal Model K

Pressure Sensor Calibrating Machine

Pressure Sensor Syringe Kit