Harwil Goldline Flow Switch [Q12Ds C2 Goldline G1 068005E 2] (Q12DSC2GOLDLIN) defilters The Magnum Force fit gives The Magnum Force fit gives this part practical value because structural wet end components work best when they match the original pump geometry closely A 3 pole contactor helps control electrical loads in compatible equipment by opening and closing the power circuit as needed Brand specific switches like this are useful when preserving original equipment behavior and connection compatibility is important A properly selected Harwil switch helps support dependable flow confirmation and contributes to more reliable overall equipment protection