Valve types and their applications: First, by use and role of classification: 1, the main cut-off valve used to cut off or connect the media flow. Including gate valve, globe valve, diaphragm valve, ball valve, plug valve, butterfly valve, plunger valve, ball valve, needle valve and so on. 2, regulating valve is mainly used to regulate the flow of media, pressure and so on. Including the control valve, throttle, pressure reducing valve. 3, check valve used to prevent media backflow. Includes various configurations of check valves. 4, diverter valves are used to separate, distribute or mix media. Including a variety of distribution valves and traps and other structures. 5, safety valve for medium overpressure protection. Including various types of safety valve. Second, according to the main parameters (a) Press the pressure classification Vacuum valve working pressure is lower than the standard atmospheric pressure valve. Low pressure valve nominal pressure PN less than 1.6MPa valve. High pressure valve nominal pressure PN10.0 ~ 80.0MPa valve. High pressure valve nominal pressure PN greater than 100MPa valve. (B) by the temperature of the medium temperature valve t is greater than 450C. Medium temperature valve 120C less than t less than 450C valve. Room temperature valve -40C less than t less than 120C valve. Cryogenic valve -100C less than t less than -40C valve. Cryogenic valve t is less than -100C valve. (C) by the valve body material classification Non-metallic materials valves: such as ceramic valves, glass steel valves, plastic valves. Metal material valves: such as copper alloy valve, aluminum alloy valve, lead alloy valve, titanium alloy valve, Monel alloy valve cast iron valve, carbon steel valve, cast steel valve, low alloy steel valve, high alloy steel valve. Metal body lining valves: such as lead-lined valves, lined plastic valves, lined enamel valves. Third, the general taxonomy This taxonomy not only by principle, role and structure by the division, is the current international and domestic classification of the most commonly used methods. General sub-gate valves, globe valves, throttle valves, instrumentation valves, plunger valves, diaphragm valves, plug valves, ball valves, butterfly valves, check valves, pressure relief valve safety valve, Sewage valve and so on. This article Keywords: valve
Yangzhou Chengde (YC)
is one of the best pipe manufacturers in the world, and the production diameter
from 8" to 48" in OD and wall thickness from 9.53 mm up to 140mm. We can produce the A/SA53 steel pipes according to the ASME SA53 and ASTM A53 standards.
Yangzhou Chengde founded in 1988, always insist on innovating
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number of staff is 3000 and cover an area of 2080 acres of the Chengde group.
Chengde group is the first echelon in
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incorporated company, Yangzhou Chengde Steel Pipe Co., ltd, Yangzhou Chengde
Heavy Industry Co., ltd and Taizhou Chengde Steel Pipe Co., ltd.
Chengde have been working on the research.manufacture and sale of seamless pipe about 30 years, and the advantage of core competence is more prominent by integrate in technical.management and market with PCC.
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