Waterway 2 1/2" Viper Spa Pump Volute (315-1500) carvinjacuzzi A focused hardware replacement like

A focused hardware replacement like this is especially useful when the surrounding pump parts remain serviceable and the weakness is isolated to the nut itself

or fails to maintain the intended state after actuation

Replacing it can help restore a cleaner heater interior and support the proper configuration of the return-side section

This type of part is especially useful in control layouts where limited panel space and precise switching behavior both matter

k600-AE1 version is designed in an 11 button holes-style format using the 9916-101382 reference

Waterway 2 1/2" Viper Spa Pump Volute (315-1500) carvinjacuzzi A focused hardware replacement likeThe Waterway 315 1500 Viper spa pump volute is designed for compatible 2 1 2 inch applications. A volute like this is useful because it forms the primary water directing housing around the impeller, helping restore the pumps internal flow path when the original housing has cracked, worn, or become unreliable. Volutes are one of the key structural pieces in pump rebuild work because they affect both fit and hydraulic performance. This Waterway part is