Harwil Q12DS Cal Spa Flow Switch (Q12DS/CAL SPA) pumpmotors A seal plate gasket helps

A seal plate gasket helps create a seal between compatible pump components

The Waterway 319-2180 Mustang trap body is designed for compatible 6 inch applications and features 2 inch FPT

Matching the correct CuNi and polymer version helps preserve intended fit and supports a cleaner

it helps streamline installation and reduce uncertainty

A terminal block is useful because it helps keep wiring cleaner

Harwil Q12DS Cal Spa Flow Switch (Q12DS/CAL SPA) pumpmotors A seal plate gasket helpsA flow switch helps confirm water movement in a compatible spa system so related equipment can operate under the correct conditions, and this Harwil Q12DS version is intended for Cal Spa applications using the Q12DS CAL SPA reference. Flow sensing is especially important in spa systems where heaters and controls depend on dependable circulation confirmation. This switch has practical value because it is matched to a specific application family,