... is used in solar water heaters,electric water heaters, boilers and other heater safety device. 1)Material:H59 Brass2)Specification:3 ... ,PT-3/4-02,PT-1/2-02.4)operating temperature:60°C,65°C,70°C,75°C,80°C ... from 60°C to 99°C.5)operating pressure:0.3Mpa-1.4Mpa. Temperature And Pressure Relief Valve ,TP valve,used in solar water heater system GB ...