Instrument Isolation Valves

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PBM’s Instrument valves are used for process flow or isolation of pressure gauge, orifice plates, flush rings and various measurement instruments. Valves are designed to ASME B16.34. They offer a higher performance solution to needle valves. 


Product Overview

  • Full or Standard Port
  • Quarter Turn Operation
  • Optional Extended Handle with lock out
  • Bleed or Gauge Ports Available
  • Locking Handle Standard Welded Body
  • Rodable in 1/4” - 3/4”
  • API-622 Low-E Stem Packing Standard
  • SIL-3 Capable per IEC 61508


Low-E Packing Tested to the API 622 Standard (rev. 2):

  • Average stem packing leakage 10 ppmv for the duration of the API 622 test (100 ppm allowable)
  • Stem packing is suitable for service at temperatures of -400˚ to 850˚F (-240˚ to 450˚C)
  • API 607 Rev. 4 fire tested
  • ASME Class 1500 Weld Design standard


PBM (Pittsburgh Brass Manufacturing) is a  company over 100 years old that began as a non-ferrous foundry in 1899 along the Monongahela River in Pittsburgh.



  • Address: 1070 Sandy Hill Road,
       Irwin, PA 15642
  • Phone: 724-863-0550 / 800-967-4PBM
  • Email:








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