The safety valve is a safety protection valve. Its opening and closing parts are in a normally closed state under the action of external force. When the medium pressure in the equipment or pipeline rises and exceeds the specified value, it automatically opens and discharges the medium outside the system to prevent The pressure of the medium in the pipeline or equipment exceeds the specified value. Safety valves are automatic valves that are mainly used in boilers, pressure vessels and pipelines to control pressure not to exceed specified values and play an important role in protecting personal safety and equipment operation. Safety valves automatically open and close based on the working pressure of the pressure system. They are generally installed on equipment or pipelines in closed systems to protect system safety. When the pressure in the equipment or pipeline exceeds the set pressure of the safety valve, the pressure relief will be automatically opened to ensure that the medium pressure in the equipment and pipeline is under the set pressure, protect the normal operation of the equipment and pipeline, prevent accidents, and reduce losses
Basic design of technical specifications
Testbr/>Dimensional range~
Pressure level.~
Casing material carbon steel, stainless steel, alloy steel
Applicable medium liquid
The operation mode is automatically designed and features an open valve cover and bonnet design to improve the heat dissipation of the spring
The setting pressure deviation is small, up to % opening and closing pressure difference%
Select high-quality spring steel to ensure the spring's Lifespan and stability
The flat structure valve disc and valve seat are easy to repair and reprocess
The setting pressure range is large.~
According to the different discharge modes of the medium, safety valves can be divided into fully enclosed There are three types: semi-enclosed and open.
Fully enclosed safety valve
When the fully enclosed safety valve is exhausted, all gases are discharged through the exhaust pipe, and the medium cannot leak out. It is mainly used in containers with toxic media.
Semi-closed safety valve
Part of the gas discharged by the semi-closed safety valve passes through the exhaust pipe, and part of it leaks from the gap between the valve cover and the valve stem. It is mostly used for media that will not pollute the environment. Container of gas.
Open safety valve
The valve cover of the open safety valve is open, allowing the spring chamber to communicate with the atmosphere, which is beneficial to reducing the temperature of the spring. It is mainly suitable for use when the medium is steam and is not sensitive to the atmosphere. Containers that produce polluting high-temperature gases.
/ Set to. / Set to. / Set to. / Set to. / Set to. The opening pressure of the safety valve of the boiler drum and superheater is specified as follows
The rated steam pressure is less than. When the rated steam pressure is greater than but less than, the opening pressure is . times the working pressure and . When ., the opening pressure is .times of working pressure and .times of working pressure respectively.
Since its establishment, Shanghai Huanyao Valve Co., Ltd. has mainly sold various flow meters, liquid level meters, flow valves, safety valves, solenoid valves, regulating valves, gate valves, ball valves, and needle valves that meet the standards of /, etc. , stop valves, check valves, butterfly valves, flame arresters, exhaust valves, filters, traps and other marine accessories sets, meter valves. According to various user requirements, according to national standards, American standards, Japanese standards, German standards, etc. Customized to domestic and foreign standards. Its products all meet the testing standards of relevant municipal, provincial and national departments.
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A48Y-16C spring type safety valve