The vacuum butterfly valve is a common pipeline control valve, mainly used for fluid control in vacuum pipelines. Mainly used in petrochemical industry, metallurgical machinery industry, nuclear industry vacuum valve, etc.

Structural Characteristics

1. It is designed and manufactured by adopting a new structural form welded by centerline butterfly plate and short structural steel plate.

2. Compact structure, light weight, easy installation, small flow resistance.

3. The flow rate is large, avoiding the influence of high temperature expansion, and the operation is easy.

4. There are no connecting rods, bolts, etc. in the body, and the work is reliable and the service life is long.

5. It can be installed in multiple stations without being affected by the flow direction of the medium.

Working Principle

The working principle of the vacuum butterfly valve is to realize the opening and closing of the valve by rotating the butterfly plate fixed on the rotating shaft by 90°. Compared with other vacuum valves of the same caliber, the vacuum butterfly valve has the advantages of simple structure, large conduction capacity, short valve body structure length, and fast opening and closing speed.

Scope of Use

The vacuum butterfly valve has a self-locking function in the open position and the closed position. The valve plate can withstand the gas pressure of 0.3MPa, is not afraid of vibration, can be installed at any position, and the valve stem does not move.

The medium used by the vacuum butterfly valve is clean air and non-corrosive gas without particle dust. The sealing material is nitrile rubber, which can be used in high-vacuum systems with a medium temperature of -25 to 80°C. The fluorine rubber sealing ring is selected, which can be used in an ultra-high vacuum system with a baking temperature of 150°C.