Mechanical Product Partner

Onyx Valve

Onyx Valve Company is a leading manufacturer of pinch valves, check valves, and pressure sensor rings. All Onyx Valve products and materials are manufactured and assembled in America.

Onyx Valve has accumulated over 20 years of experience in the flow control industry, and pride themselves on product durability and longevity. 

Check Valves

The Onyx Duckbill Check Valve is reliable and cost effective flow control solution. These products are 100% rubber heat molded products that are suitable for almost any environment. Onyx Duckbill Check Valves are maintenance free and have no mechanical components. The revolutionary design eliminates the need for an outside energy source and will not warp, freeze, or clog. They are virtually silent, making them great for any application.

Pinch Valves

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.

Pressure Sensors

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.

Expansion Joints

Onyx Valve manufactures a complete line of Expansion Joints. Expansion joints are designed to alleviate piping stresses, compensate for pipe movement (expansion, contraction, vertical, and horizontal), reduce noise, and vibration. Onyx Valve can custom-built any expansion joint in a variety of styles and configurations to accommodate pipe size reductions, misalignments and offsets.