Beijing Tongchuang Fulai will explain the classification of valves to you!
author: Beijing Tongchuang Fula
2026-04-30
1. Classification by purpose and function
Regulating valves - primarily used to regulate the flow, pressure, etc. of media. Including regulating valves, throttle valves, pressure reducing valves, etc.
Check valves - used to prevent the backflow of medium. Including check valves of various structures.
Diverter valves - used for separating, distributing, or mixing media. Including distribution valves and drain valves of various structures.
Safety valve category - used for safety protection in case of medium overpressure. Includes various types of safety valves.
Cut-off valves - primarily used to cut off or connect the flow of media. These include gate valves, globe valves, diaphragm valves, ball valves, plug valves, butterfly valves, piston valves, ball-plug valves, needle instrument valves, etc.
2. Classification by pressure
Vacuum valve - a valve with a working pressure lower than standard atmospheric pressure.
Low pressure valve - a valve with a nominal pressure PN less than 1.6 MPa.
Medium pressure valve - a valve with a nominal pressure of PN 2.5-6.4 MPa.
High pressure valve - valve with a nominal pressure of PN10.0-80.0MPa.
Ultra-high pressure valve - a valve with a nominal pressure PN greater than 100 MPa.
3. Classification by medium temperature
High-temperature valve - a valve with a temperature rating of t greater than 450℃..
Medium temperature valve - a valve with a temperature range of less than 120℃ and greater than 450℃.
Normal temperature valve - a valve with a temperature range of 40℃ to 120℃.
Low temperature valve - a valve with a temperature range of 100℃ to -40℃.
Ultra-low temperature valve - a valve with a temperature threshold of less than -100℃.
4. Classification by valve body material
Metal valve body lined valves: lead-lined valves, plastic-lined valves, enamel-lined valves.
Non-metallic material valves - such as ceramic valves, fiberglass valves, and plastic valves
Metal material valves - such as: copper alloy valves, aluminum alloy valves, lead alloy valves, titanium alloy valves, monel alloy valves, cast iron valves, carbon steel valves, cast steel valves, low alloy steel valves, high alloy steel valves.
Beijing Tongchuangfulai Technology Development Co., Ltd. primarily specializes in the research, development, manufacturing, and sales of water treatment equipment and various accessories. As a large-scale wholesaler and stockist of numerous renowned water treatment brands both domestically and internationally, we are also capable of designing, assembling, and debugging fully automatic softening water equipment, reverse osmosis pure water equipment, and providing other services according to customer needs. Consultation hotline: 010-63704291
Regulating valves - primarily used to regulate the flow, pressure, etc. of media. Including regulating valves, throttle valves, pressure reducing valves, etc.
Check valves - used to prevent the backflow of medium. Including check valves of various structures.
Diverter valves - used for separating, distributing, or mixing media. Including distribution valves and drain valves of various structures.
Safety valve category - used for safety protection in case of medium overpressure. Includes various types of safety valves.
Cut-off valves - primarily used to cut off or connect the flow of media. These include gate valves, globe valves, diaphragm valves, ball valves, plug valves, butterfly valves, piston valves, ball-plug valves, needle instrument valves, etc.
2. Classification by pressure
Vacuum valve - a valve with a working pressure lower than standard atmospheric pressure.
Low pressure valve - a valve with a nominal pressure PN less than 1.6 MPa.
Medium pressure valve - a valve with a nominal pressure of PN 2.5-6.4 MPa.
High pressure valve - valve with a nominal pressure of PN10.0-80.0MPa.
Ultra-high pressure valve - a valve with a nominal pressure PN greater than 100 MPa.
3. Classification by medium temperature
High-temperature valve - a valve with a temperature rating of t greater than 450℃..
Medium temperature valve - a valve with a temperature range of less than 120℃ and greater than 450℃.
Normal temperature valve - a valve with a temperature range of 40℃ to 120℃.
Low temperature valve - a valve with a temperature range of 100℃ to -40℃.
Ultra-low temperature valve - a valve with a temperature threshold of less than -100℃.
4. Classification by valve body material
Metal valve body lined valves: lead-lined valves, plastic-lined valves, enamel-lined valves.
Non-metallic material valves - such as ceramic valves, fiberglass valves, and plastic valves
Metal material valves - such as: copper alloy valves, aluminum alloy valves, lead alloy valves, titanium alloy valves, monel alloy valves, cast iron valves, carbon steel valves, cast steel valves, low alloy steel valves, high alloy steel valves.
Beijing Tongchuangfulai Technology Development Co., Ltd. primarily specializes in the research, development, manufacturing, and sales of water treatment equipment and various accessories. As a large-scale wholesaler and stockist of numerous renowned water treatment brands both domestically and internationally, we are also capable of designing, assembling, and debugging fully automatic softening water equipment, reverse osmosis pure water equipment, and providing other services according to customer needs. Consultation hotline: 010-63704291
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