The vacuum valve has the adhering to qualities:

The pressure is reduce than atmospheric stress, and the pressure drop on the disc must not exceed one kgf / cm2. The working temperature of the medium relies upon on the approach in which the unit is employed. The temperature generally does not exceed the variety of -70 ~ + one hundred fifty ° C. The fundamental specifications for this variety of valve are to ensure a high degree of tightness in the relationship and the tightness of the framework and gasket materials. Vacuum valves can be divided into 4 groups in accordance to media pressure:

one) Low vacuum valve: medium strain p = 760 ~ 1mmHg

2) Medium vacuum valve: p = 1 × 10-3 mm Hg.

3) Large vacuum valve: p = 1 × ten-4 ~ 1 × ten-7 mm Hg

4) Ultra-high vacuum valve: p≤1 × ten-eight mm Hg.

Vacuum valve commonly utilised in the valve stem for linear motion of vacuum bellows globe valve. Gate valves are much more minimal, but for larger diameters, ball valves, plunger valves and butterfly valves are also offered. Plug Vccuum pump for vacuum valves have not been promoted, simply because the plug valves want to be lubricated with oil, so that oil vapor might enter the vacuum system, which is not permitted. Vacuum valve closures are sealed with rubber or steel seals. The bellows of the bellows globe valve are made of stainless metal, large zinc brass JI80, plastic and other components. Small-diameter (diameter below ten mm) globe valve closures can be sealed with a diaphragm. Minimal and medium vacuum can use spherical plug valves.

The vacuum valve has the following qualities:

The strain is lower than atmospheric stress, and the pressure drop on the disc need to not exceed one kgf / cm2. The functioning temperature of the medium relies upon on the approach in which the device is utilised. The temperature generally does not exceed the range of -70 ~ + one hundred fifty ° C. The major valves of Shanghai Shenhong Valve Co., Ltd. are: strain decreasing valve (fuel force reducing valve, adjustable pressure minimizing valve, bellows lowering valve, piston lowering valve, steam reducing valve, pilot decreasing valve, air Force decreasing valve, nitrogen strain reducing valve, water strain minimizing valve, self-operated force lowering valve, proportional force minimizing valve), security valve, thermal insulation valve, cryogenic valve, ball valve, world valve, gate valve, examine valve, butterfly valve, filter Device, discharge valve, diaphragm valve, plug valve, plunger valve, equilibrium valve, regulating valve, entice valve, pipe clamp valve, blow down valve, exhaust valve, mud discharge valve, pneumatic valve, electric valve, substantial pressure valve, medium Force valve, minimal pressure valve, hydraulic control valve, vacuum valve, rubber lined valve, fluorine lined valve. The standard requirements for this variety of valve are to ensure a substantial degree of tightness in the link and the tightness of the structure and gasket content.

Vacuum valve commonly used in the valve stem for linear movement of vacuum bellows globe valve. Gate valves are a lot more restricted, but for larger diameters, ball valves, plunger valves and butterfly valves are also obtainable. Plug valves for vacuum valves have not been promoted, simply because the plug valves need to be lubricated with oil, so that oil vapor could enter the vacuum program, which is not permitted.

Vacuum valve closures are sealed with rubber or steel seals. The bellows of the bellows world valve are created of stainless metal, high zinc brass JI80, plastic and other materials. Modest-diameter (diameter beneath 10 mm) world valve closures can be sealed with a diaphragm. Low and medium vacuum can use spherical plug valves.

The vacuum valve has the adhering to attributes: The stress is reduce than atmospheric stress, and the strain drop on the disc have to not exceed 1 kgf / cm2. The running temperature of the medium relies upon on the approach in which the gadget is employed. The temperature typically does not exceed the variety of -70 ~ + 150 ° C. The simple needs for this type of valve are to ensure a higher degree of tightness in the link and the tightness of the framework and gasket material.