Harwil Q12DS Flow Switch, 1/2" Male Pipe Thread, 2A. Note: NO WIRES only has crimp terminals2 amp pilot duty switches on at 10 gpm and switches off at 8 gpm. ABS body, stainless spring arm.Kit includes one each HRZ# 60-555-1225, 1/2" Strain Relief Connector and 1 each 1/2" fpt x 1/2"fpt coupling.Stationary arm measurement: 2" Distance between end of the arm and bottom of the threads 2-5/8" Distance between end fo the arm and top of the threads.Can be used to replace: 608073, HRWQ12DS1, Q12DS1.54SN01, Q12DS154SN01, Q12DS501.54SN01, Q12DS50154SN01 & Q12DSMSC

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