KIDDE System Valve Actuator (87-120042-001)

A System Valve Actuator (SVA) must be mounted to every WHDR cylinder valve assembly. The SVA contains a pneumatically operated piston, which depresses the cylinder valve stem to open the valve and discharge the wet chemical. The SVA has ports for connection of actuation tubing or braided hose to the Kidde control system. Nitrogen from the control head flows through the actuation tubing, pressurizing the SVA(s), thereby extending the internal SVA piston. The piston is equipped with a spring-loaded plunger, which locks the piston in the actuated position, ensuring a complete cylinder discharge. Part Number 87-120042-001