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Pressure Sensors

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.


Onyx Instrumentation Manifolds

Onyx Instrumenation Manifolds

Onyx Dual Mount Instrument Manifolds are the ideal way to mount two instruments on one isolator ring. Robust 1⁄2” NPT manifolds can support multiple heavy instruments including turret case gauges, switches, and transmitters. One-piece design minimizes potential leak paths. Made from 316-stainless steel. Available in three configurations shown above, there’s an instrument manifold available for just about any combination of instruments imaginable.


More Information

Onyx Valve manufactures a complete line of Pressure Sensors and Pressure Sensor Accessories for calibration and maintenance. For more information, feel free to get in touch with us - Contact Us.