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Master Valves

Master Valves

These heavy-pressure shut-off valves are designed to be used in heavy-duty applications - manifold and other piping systems & with tube trailers. Our master valves are suitable for use with nitrogen, argon, oxygen, acetylene, carbon dioxide, helium, nitrous oxide, hydrogen, and other inert gases.

Key Features

  • Exceptional stem seal even at low gas pressures = pressure seal design w/ handwheel spring that applies upward force against upper stem
  • C64200 aluminum-silicon- bronze not for acetylene
  • C36000 free cutting brass for acetylene
  • Pressure seal bonnet design assures positive seal
  • Protection against environmental contamination because of the O-ring moisture seal on upper stem
  • Restricted moisture intrusion due to the presence of brass washer second seal