Our CLA style Air-to-Close NPT Threaded Inline Valves are used for controlling water flow to Deflector , Side Spray and other style spray heads. Standard operating air pressure of 100-120psi should be sufficient to keep this valve closed, depending on the type of water pump you are using. Bottom plug included. This valve requires a 1/4 air hose fitting to operate (not included). Doing a rebuild/repair and just need some of the parts? Check out our CLA Style Valve Repair Kit .