... , boilers and other heater safety device. 1)Material:H59 Brass2)Specification:3/4inch,1/2inch3)Model:PT-3/4-01,PT-1/2-01,PT ... -3/4-02,PT-1/2-02.4)operating temperature:60°C,65°C ... range 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 ...