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Onyx Isolator Ring - PSS
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Onyx Isolator Ring - PSS


The Onyx Isolator Ring - PSS is a high-performance pressure measurement solution designed for accurate monitoring of slurries and corrosive fluids in threaded pipe connections. Utilizing patented "Module Seal" technology and ultra-deep vacuum filling, the PSS series delivers superior accuracy and reliability compared to traditional diaphragm seals, making it an ideal choice for demanding industrial applications.

The PSS series features an integral block valve and module seal, allowing for seamless instrument replacement or calibration without process interruption. The silicone oil fill fluid ensures safe, non-toxic, and stable operation across a wide temperature range from -40°F to +400°F. With its robust construction and advanced design, the Onyx Isolator Ring - PSS provides a cost-effective and reliable solution for pressure measurement in challenging environments.


  • Superior accuracy compared to diaphragm seals
  • Patented "Module Seal" allows instrument replacement without removing the isolator ring from the pipe
  • Immune to errors caused by ambient temperature fluctuations
  • Integral snubber eliminates gauge fluctuations at no additional cost
  • Silicone oil fill fluid is safe, non-toxic, non-corrosive, and stable from -40°F to +400°F
  • Equipped with an integral block valve and module seal for easy maintenance


  • Slurry pressure measurement
  • Corrosive fluid pressure monitoring
  • Threaded pipe connection installations
  • Industrial processes requiring high accuracy and reliability


  • Compatible with threaded pipe connections
  • Ultra-deep vacuum filling for the highest industry accuracy
  • Stable operation from -40°F to +400°F



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