Hot Tub Replacement Part Watkins Air Check Valve, Hot Spring HTCP 70289 OEM. Air check valve for all 1993-2001 Hot Spring, 1997-2000 Tiger River and 1997-2002 Hot Spot spa models. This check valve is located in the equipment compartment under the bartop. Its primary function is to prevent water from back flowing into the equipment compartment should a hydrotherapy jet become obstructed (like when a guest sticks their finger in the jet). Sometimes this check valve can make a loud vibrating noise as the silicone diaphragm ages behaving like a reed on a flute.
- This is for a Single Watkins Air Check Valve, Hot Spring
- OEM Replacement
- High Grade Quality that's made to last!!
Note: These check valves age at the same rate. It is best to replace all of them at the same time if budget allows