A Pressure safety valve is a valve that works as a fail-safe. As it automatically releases the matter from pressure vessel, boiler or other system, when temperature or pressure exceeds present limit. Pilot-operated relief valves are also a type of pressure safety valve. Safety valves were first manufactured for use on steam boilers during Industrial Revolution. Pressure Safety Valve is kind of valve that naturally incites when the weight of gulf side of the valve increases to a foreordained weight, to open valve circle & release the fluid and when the pressure reduces to recommended worth, for closing the valve plate once more. Specialityvalve is the best Pressure Safety valve manufacturer in India, Specialityvalve manufactures the following safety valves: Pressure safety valve Thermal safety valve Steam safety valve Below is the product description: Material used: Cast iron Cast iron (WCB, WCC, WC6), Cast Steel, Ductile Iron, WCB, SS304, SS316 Size: to 40 ANSI Class: 150 and 2500. Our safety valves are manufactured to meet all the international standards such as API, AWWA, DIN, JIS and ASME for the delivery of excellent products to our customers.