Difference between vacuum valve and normal pressure and high pressure valve

Our North Valve Group Co., Ltd. is a manufacturer of research and development, production and sales of standard general industrial valves such as vacuum valves, ball valves, gate valves, butterfly valves and globe valves, with diameters ranging from 10mm to 3000mm and nominal pressure PN ranging from 1Mpa to 80Mpa. At the same time, we can also customize non-standard valves for you. Welcome to call us.

Technical Department of Beigaoke Group, a manufacturer of vacuum valves and atmospheric and high-pressure valves, arranged it.

Definition of valve pressure value

1) vacuum valve: absolute pressure < For valves with a height of 0.1Mpa or 760mm Hg, the pressure is usually expressed in mm Hg or mm water column.

2) Low-pressure valve: valves with nominal pressure PN≤1.6Mpa (including steel valves with PN≤1.6MPa).

3) Medium pressure valve: a valve with a nominal pressure of PN 2.5-6.4 MPa.

4) High pressure valve: a valve with a nominal pressure of PN 10.0-80.0 MPa.

5) Ultra-high pressure valve: a valve with a nominal pressure PN≥100.0MPa.

GID electric vacuum butterfly valve

Vacuum valve 

Vacuum valve means that the inner cavity of the valve is in a vacuum state, usually called negative pressure, the inner cavity pressure is lower than atmospheric pressure, and the pressure drop on the valve disc cannot exceed 1kg force/cm. The valves used in vacuum pipeline system include vacuum ball valve, vacuum butterfly valve and vacuum diaphragm valve.

According to the vacuum degree of the valve, the vacuum valve can be divided into four groups:

1) low vacuum valve: medium pressure p=1~760mmHg.

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

3) High vacuum valve: p = 1× 10-7 ~ 1× 10-4 mmHg.

4) Ultra-high vacuum valve: P ≤ 1× 10-8 mmHg.

GM series high vacuum diaphragm valve

After reading this article "Difference between Vacuum Valve and Normal Pressure and High Pressure Valve", I believe you have a certain understanding of vacuum valve. Our North Valve Group Co., Ltd. is a manufacturer of vacuum valves. For decades, the company has sold high-quality valve products, and the product technology and quality have been certified by national authorities, reaching national standards and deeply trusted by customers.

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