Harwil Q12DS Flow Switch 1/2" NPT 2 amp pilot duty switches on at 10 gpm and switches off at 8 gpm. ABS body, stainless spring arm Kit includes one each 60-555-1225, 1/2" strain relief connector&one 1/2"fpt x 1/2"fpt coupling. Stationary arm measurements: 2" Distance between end of the arm and bottom of the threads 2-5/8" Distance between end of the arm and top of the threads
