Pressure Regulators Instrument


  • Negative pressure regulation
  • Internally threadless design
  • Convoluted Hastelloy C-22® diaphragm
  • For delivery of low pressure gases from liquid sources
  • White knob indicates negative pressure

R4000 Series

  • Internally threadless design
  • Convoluted Hastelloy C-22® diaphragm
  • Available in 316L SST, Brass, Hastelloy C-22®, Monel®
  • Seals available for nitrous oxide and hydrocarbon applications
  • Low dead volume
  • General purpose for instrument/analyzer and semiconductor applications

IR5000 Series

  • Internally threadless design
  • Large convoluted Hastelloy C-22® diaphragm
  • Greater sensitivity for precise pressure control
  • For analyzer system gas management and instrument calibration


  • High flow regulator
  • Self-contained replaceable valve seat
  • For corrosive and noncorrosive fluid applications
  • Available in 316L SST and Brass


  • High flow welded regulator
  • Inlet pressure up to 1,250 psig (86 barg)
  • 2 Cv
  • Large convoluted diaphragm provides stable pressure control

959 Series

  • Tied diaphragm design to minimize regulator creep
  • Internally threadless design
  • Metal to metal diaphragm seal
  • Available in 316L SST, Brass and Hastelloy C-22®

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