Working principle and purpose of the product:

Vacuum butterfly valves are suitable for use as closed circuit equipment on non corrosive saturated steam low vacuum pipelines. This series of valve sealing butterfly valves has a pressure seal of 0.25MPa at both ends of the shaft seal to ensure that there is no leakage at the shaft seal. The DS9D41X-2.5C model has a double seat structure, with rubber slits and pressure water (pressure value of 0.25MPa) sealing between the two seats and at the shaft end.

Suitable for pipelines with medium temperature ≤ 300 ℃ and nominal pressure of 0.1Mpa in production processes such as building materials, metallurgy, mining, and electricity, used for connecting, opening, closing, or regulating medium quality.

Product Structure Features:

1. Designed and manufactured using a new structural form of welding midline disc plates and short structural steel plates, it has a compact structure, light weight, easy installation, low flow resistance, high flow capacity, avoids the influence of high temperature expansion, and is easy to operate

2. No connecting rods, bolts, etc. inside, reliable operation, long service life. Can be installed in multiple workstations without being affected by the flow direction of the medium

3. Due to structural limitations, this structure is not suitable for valves with diameters below DN200

4. Valves can withstand positive pressure

5. The valve stem does not move up or down