Main Parts and Materials of High Vacuum Flapper Valve
Valve body, bonnet and stem: aluminum alloy, carbon steel or stainless steel
Seals: NBR, Viton, bellows (shaft seal).
Product features
- Standardized, modular design, easy to replace and maintain;
- Easy to clean design;
- The solenoid valve adopts energy-saving design and small volume.
Main performance indexes
- Scope of application
Pressure difference on valve plate when opening: ≤ 1.2 × 105Pa in any direction
Leakage rate of valve body and valve seat: ≤ 1.3 × 10-7pa · L · S-1
Recommended number of cycles before first maintenance: 200000
Baking temperature of valve body: ≤ 150 ℃
- Installation position
Manual drive: any – pneumatic drive: any
Electromagnetic drive: any (bellows seal); seal face to vacuum (fluorine rubber ring seal)
- 3.power supply
Pneumatic drive: AC 220V 50Hz, 6W or DC 24V, 3W (special specification can be customized)
Electromagnetic drive: AC 220V or 230V 50Hz, starting power 800W, holding power 8W
Compressed air (pneumatic only): 0.4 ～ 0.7MPa
Valve opening and closing time – pneumatic drive: ≤ 1s
Electromagnetic drive: opening ≤ 0.1s; closing ≤ 1s (fluororubber ring seal), closing ≤ 0.5s (bellows seal)
- Valve position indication
Manual drive: with opening and closing position indication
Pneumatic drive: with opening and closing position indicator switch (magnetic switch)
Electromagnetic drive: with on position indicator
