PASCO 1423 Water Test Gauge, 2-1/2 in Dial, 0 to 160 psi, 3/4 in

Regular pressure hand to peak operating or surge pressure point where it remains until you manually reset it. Excellent to determine if P/T valve is leaking from failure or if leaking is caused by surge or excessive pressures (gauge attached to boiler drain overnight) lazy hand operates over entire gauge range.