What is a bellows stop valve?

Release date:

2021-05-14

Bellows globe valves are a relatively small category, while steam globe valves are larger. Ordinary globe valves can also be used in steam systems; it can be said that bellows globe valves belong to steam globe valves, but it cannot be said that steam globe valves belong to bellows globe valves. Overview of bellows globe valves: Bellows globe valves use a bellows structure. The lower end of the stainless steel bellows is welded to the valve stem to prevent process fluid from corroding the valve stem. The other end is placed between the valve body and the valve cover, forming a static seal. A double sealing design is adopted. If the bellows fail, the valve stem packing will prevent leakage. The bellows are welded to the valve stem to maintain stable operating performance and avoid vibration caused by the valve plug.

Bellows Globe Valve Is a relatively small category 。 While steam globe valves are relatively large 。 Ordinary globe valves can also be used in steam systems; it can be said Bellows Globe Valve Belongs to steam globe valves 。 But it cannot be said that steam globe valves belong to bellows globe valves.

Bellows Globe Valve Overview The bellows globe valve adopts a bellows structure. The lower end of the stainless steel bellows is welded to the valve stem 。 To prevent process fluid from corroding the valve stem 。 The other end is placed between the valve body and the valve cover 。 Forming a static seal. It uses a double sealing design 。 If the bellows fail 。 The valve stem packing will prevent leakage. The bellows are welded to the valve stem 。 To maintain stable operating performance 。 And avoid valve stem vibration caused by plug vibration.

Bellows Globe Valve Also known as bellows sealed globe valve. Through automatic roll welding 。 Forms a metal barrier between the fluid medium and the atmosphere 。 Ensuring zero leakage design of the valve stem. Compared with traditional globe valves 。 It has the following advantages 1. Bellows globe valves have a long service life 。 Reducing maintenance frequency 。 Lowering operating costs. The robust bellows seal design ensures zero leakage of the valve stem 。 And provides maintenance-free conditions. 2. The valve opening and closing torque is small 。 Reducing labor intensity 。 Can drive any form of actuator 。 Facilitating remote control. 3. Attractive appearance 。 Smooth valve flow path 。 Reducing the valve flow resistance coefficient. It is an energy-saving product. 4. The valve external seal uses bellows sealing and graphite and stainless steel gasket sealing 。 Reliable 。 Can be used for a long time 。 No need to replace sealing packing. In industrial use 。 Leakage caused by globe valves High temperature 。 Toxic 。 Flammable and explosive 。 Radioactive media, etc., not only pollute the environment 。 But often cause significant personal and property losses. This type of valve should be safer 。 More stable 。 Design and manufacturing should strictly adopt advanced foreign standards.