CLASSIFICATION OF PIPE VALVE
Truncation class:Gate valves, globe valves, plug valves, ball valves, butterfly valves, needle valves, diaphragm valves, etc.
Vacuum: vacuum ball valves, vacuum block valve, vacuum valves, pneumatic valves, etc.
Special-purpose categories: such as a pig valve, vent valve, sewage valve, exhaust valve, filter, etc.
Valves for fluid control systems, from the most simple valves to complex automatic control system used by the various valves, its variety and size range. Valves are designed to control air, water, steam, corrosive media, mud, oil, liquid metals and radioactive medium, such as various types of fluid flow. Valve according to the material divided into cast iron valves, cast steel valve, stainless steel valve (201, 304, 316), chromium-molybdenum steel valve, chromium-molybdenum-vanadium steel valves, duplex steel valves, plastic valves, non-standard custom valve material.
Valves are in fluid conveying system control unit, which is used to change the channel section and flow direction, diversion, globe, throttle, stop, bypass or overflow pressure relief function. For fluid control valve, from the most simple valves to complex automatic control system used by the various valves, its many varieties and specifications, the nominal diameter of the valve from the tiny instrument valve to size up to 10m industrial pipeline valves. Can be used to control water, steam, oil, gases, slurries, corrosive, liquid metal and radioactive fluid, such as various types of fluid flow, pressure valves are available from 0.0013MPa to 1000MPa ultra-high pressure operating temperature from-270 ° c temperature 1430 ° c temperatures.
Valves of pipe fittings are in a fluid system, used to control the direction of the fluid, pressure devices, flow in the piping and equipment is medium (liquid, gas, powder) flow or stop and be able to control the flow of installation.
Foreign valve industry standard contrast table
|Chinese standard||Standard names||International standards|
|GB12220－89||Universal valve symbol||ISO5209|
|GB12221－89||Flange connections metal valve length of structure||ISO5752|
|GB12222－89||Multi-turn valve actuator connection||ISO5210/1~3|
|GB12223－89||Part-turn valve actuator connection||ISO5211/1~3|
|GB12224－89||Steel valves-General requirements||ANSI B16.34|
|GB12225－89||Valves-copper alloy castings for general technical conditions||ASTM B584|
|GB12226－89||General specification for valve grey cast iron||ISO 185,BS 1452|
|GB12228－89||Universal valve carbon steel forgings-technical conditions||ASTM A 105、A181|
|GB12229－89||General purpose industrial valves Specification for carbon steel castings||ASTM A703|
|GB12230－89||General specification for valve steel castings, austenitic||ASTM A351|
|GB12232－89||General purpose industrial valves flanged steel gate valve||ISO 5996-1982, API 595|
|GB12233－89||General purpose industrial valves-steel globe valves and lift check valves||BS 5152、5153|
|GB12234－89||General purpose industrial valves-flanged and welding connections brass gate valves||API 600|
|GB12237－89||General purpose valves-flanged and butt-weld end steel ball valves||ISO 7121,API 607|
|GB12238－89||General purpose industrial valves-flanged and wafer butterfly valves||BS 5155|
|GB12239－89||General purpose industrial valves-Diaphragm valves||BS 5156,NFE 29|
|GB12240－89||Universal valve iron plug valves||API 593|
|GB12241－89||Safety valves-General requirements||ISO 4126|
|GB12242－89||Safety valve performance test method||ANSI/ASME PTC 25.3|
|GB12243－89||Spring direct loading type relief valve||JIS B8210|
|GB12244－89||Pressure relief valves-General requirements||JIS B8372、B8410|
|GB12245－89||Method of performance test for pressure reducing valves||JIS B8372、B8410|
|GB12246－89||Pilot operated pressure reducing valve||JIS B8372,DSS405|
|GB12247－89||Classification of steam traps||ISO 6704|
|GB12248－89||Steam traps-terms||ISO 6552|
|GB12249－89||Steam trap flag||ISO 6553|
|GB12250－89||Steam trap length||ISO 6554|
|GB12251－89||Test method for steam traps||ISO 6948、7841、7842|
|GB/T13927-92||Universal valve pressure test||ISO 5208|
|JB/T5296-91||Universal valve flow coefficient and flow resistance coefficient of test methods||JIS B2005|
|JB/T6899-93||Fire resistance tests for valve||ISO 10497|
|JB/T7927-95||Valve steel castings quality requirements||MSS SP55|
|ZBJ16006-90||Test and inspection of valves||API 598|
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