Shutoff Valves

The flow of gas through a delivery system must occassionally be stopped for various reasons, such as during the changeout of spent purifiers, or during routine instrument maintenance. To prevent the infusion of room air into the delivery system, it is recommended to install a shuttoff valve:

  • Directly downstream of gas cylinders and/or gas generators
  • Direct upstream and directly downstream of purifiers
  • Directly upstream of the instrumentation

Three types of shuttoff valves are offered: on/off toggle type, on/off ball type, and knob diaphragm type.