Harwil Flow Switch Replacement Mechanism 0.75" MPT thread
Harwil flow switch replacement mechanism used on numerous spas
3/4" MPT thread - screws into barbed Tee fitting
(outside diameter of thread is 26.5mm - 3/4" NPT thread)
Harwil Q-12DS-C2 flow switch mechanism
Max 30vAC / 60vDC
Contact switch current max 0.4A, carrying current 1.0A max, 10w
Extra low voltage applications only. Cannot be used with 240v
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