Carvin DVK5–DVK7 1-1/2" 7-Position Replacement Valve (39-0003-02-R) pumpparts Extension and relay boards are

Extension and relay boards are the kind of parts that make a spa control system more capable without replacing the entire platform around it

The Waterway 310-1510 wet end is designed for compatible 5

For the right application

Replacing worn retention hardware can dramatically improve the feel of a repair

A header gasket is useful because it helps seal one of the heater’s key junction areas

Carvin DVK5–DVK7 1-1/2" 7-Position Replacement Valve (39-0003-02-R) pumpparts Extension and relay boards areThe Carvin replacement valve is designed for compatible DVK5 through DVK7 applications where dependable seven position control is needed. A valve like this is useful because it centralizes multiple operating modes into one manageable component, making filtration and service functions easier to control. This 1 1 2 inch seven position replacement is especially useful when the original valve is leaking, sticking, damaged, or no longer switching cleanly