The product is used in solar water heaters,electric water heaters, boilers and other heater safety device. 1)Material:H59 Brass2) ... ,80°C,85°C,90°C,95°C,99°C.Can change the operating temperature as the customers' requirements range from ... .4Mpa. Temperature And Pressure Relief Valve ,TP valve,used in solar water heater system GB/T 20910-2007