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  1.  The vacuum valve has the adhering to traits:
  2.  The stress is reduce than atmospheric pressure, and the force fall on the disc should not exceed one kgf / cm2. The working temperature of the medium relies upon on the approach in which the device is utilised. The temperature generally does not exceed the selection of -70 ~ + 150 ° C. The simple requirements for this kind of valve are to ensure a large degree of tightness in the connection and the tightness of the construction and gasket material. Vacuum valves can be divided into 4 teams in accordance to media force:
  3.  1) Reduced vacuum valve: medium stress p = 760 ~ 1mmHg
  4.  2) Medium vacuum valve: p = 1 × 10-3 mm Hg.
  5.  three) Substantial vacuum valve: p = 1 × 10-four ~ 1 × ten-7 mm Hg
  6.  4) Extremely-large vacuum valve: p≤1 × ten-8 mm Hg.
  7.  Vacuum valve widely used in the valve stem for linear motion of vacuum bellows globe valve. Gate valves are a lot more minimal, but for bigger diameters, ball valves, plunger valves and butterfly valves are also accessible. Plug valves for vacuum valves have not been promoted, simply because the plug valves need to have to be lubricated with oil, so that oil vapor may enter the vacuum program, which is not allowed. Vacuum valve closures are sealed with rubber or metallic seals. The bellows of the bellows globe valve are created of stainless metal, higher zinc brass JI80, plastic and other resources. Small-diameter (diameter beneath 10 mm) globe valve closures can be sealed with a diaphragm. Reduced and medium vacuum can use spherical plug valves.
  8.  The vacuum valve has the following traits:
  9.  The force is reduced than atmospheric force, and the force fall on the disc have to not exceed 1 kgf / cm2. The functioning temperature of the medium relies upon on the procedure in which the system is utilized. The temperature generally does not exceed the variety of -70 ~ + one hundred fifty ° C. https://www.labideal.com of Shanghai Shenhong Valve Co., Ltd. are: pressure reducing valve (gas pressure reducing valve, adjustable strain reducing valve, bellows minimizing valve, piston lowering valve, steam lowering valve, pilot decreasing valve, air Pressure lowering valve, nitrogen pressure reducing valve, h2o strain lowering valve, self-operated stress lowering valve, proportional force reducing valve), security valve, thermal insulation valve, cryogenic valve, ball valve, globe valve, gate valve, check out valve, butterfly valve, filter Unit, discharge valve, diaphragm valve, plug valve, plunger valve, harmony valve, regulating valve, trap valve, pipe clamp valve, blow down valve, exhaust valve, mud discharge valve, pneumatic valve, electric powered valve, substantial stress valve, medium Pressure valve, lower strain valve, hydraulic handle valve, vacuum valve, rubber lined valve, fluorine lined valve. The standard specifications for this kind of valve are to ensure a higher diploma of tightness in the relationship and the tightness of the composition and gasket materials.
  10.  Vacuum valve widely employed in the valve stem for linear movement of vacuum bellows globe valve. Gate valves are far more constrained, but for bigger diameters, ball valves, plunger valves and butterfly valves are also obtainable. Plug valves for vacuum valves have not been promoted, because the plug valves require to be lubricated with oil, so that oil vapor may enter the vacuum method, which is not permitted.
  11.  Vacuum valve closures are sealed with rubber or steel seals. The bellows of the bellows globe valve are made of stainless metal, higher zinc brass JI80, plastic and other supplies. Small-diameter (diameter underneath 10 mm) world valve closures can be sealed with a diaphragm. Low and medium vacuum can use spherical plug valves.
  12.  The vacuum valve has the pursuing qualities: The strain is lower than atmospheric force, and the stress drop on the disc need to not exceed one kgf / cm2. The operating temperature of the medium is dependent on the procedure in which the system is employed. The temperature generally does not exceed the selection of -70 ~ + a hundred and fifty ° C. The simple requirements for this kind of valve are to guarantee a substantial degree of tightness in the relationship and the tightness of the framework and gasket substance.
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