Locomotive H-5 Relay Air Valve
Locomotive H-5 Relay Air Valve


  • A pneumatic, double piloted, three way valve that changes the air passages through it when air pressure of a predetermined amount or more is in the control chamber
  • Used in various ways including to control a large flow of air piloted by a small amount of control air, an interlock to control flow of air in one circuit by placing its control in another independent air circuit, as a sequence valve for timing, cycling, etc.
  • Not interchangeable with an HB Relayair Valve

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