Manual worm wheel blind valve
Manual worm wheel blind valve
Nominal diameter: DN300 ~ 2000mm
Nominal pressure: PN0.05 ~ 0.25MPa
Temperature: -20 ℃ ~ 300 ℃
Medium: gas and other toxic and harmful, combustible gas,
The main material: a valve body of the shutter Carbon steel; screw for the alloy Steel; nut manganese copper alloy, ductile iron; expansion device for stainless steel
First, the structural characteristics
Manual worm wheel blind valve is mainly composed of left valve body, right valve body, screw pair, flap, seal ring, lever, worm gear and other components. The base and support column form a rigid structure. Rubber ring embedded in the flap, with high temperature, good sealing performance, easy replacement, long service life and so on.
Second, the main performance parameters
| Nominal pressure MPa | 0.25 | 0.15 | 0.10 | 0.05 |
| Seal test pressure MPa | 0.275 | 0.165 | 0.11 | 0.055 |
| Strength test pressure MPa | 0.40 | 0.225 | 0.15 | 0.075 |
| Drive source | Compressed air 0.4-0.6MPa; Hydraulic pressure 6.3MPa; 3-phase 380V50HZ | |||
| Applicable temperature ℃ | Nitrile rubber | Silicone Rubber | fluororubber | |
| -20-100 | -20-200 | -20-300 | ||
| Suitable media | Gas and other toxic, harmful, flammable gas | |||
| Opening and closing time S | ≤60 | |||
| The main components of the material | Valve body, the gate for the carbon steel; screw for the alloy steel; nut manganese copper alloy, ductile iron; expansion device for stainless steel | |||
Third, the main connection size
| DN | D | D1 | b | n-φd | L |
| 300 | 440 | 395 | 22 | 12-φ22 | 500 |
| 350 | 490 | 445 | 22 | 12-φ22 | 500 |
| 400 | 540 | 495 | 22 | 16-φ22 | 600 |
| 450 | 595 | 550 | 24 | 16-φ22 | 600 |
| 500 | 645 | 600 | 24 | 16-φ22 | 600 |
| 600 | 755 | 705 | 24 | 20-φ26 | 600 |
| 700 | 860 | 810 | 26 | 24-φ26 | 800 |
| 800 | 975 | 920 | 26 | 24-φ30 | 800 |
| 900 | 1075 | 1020 | 28 | 24-φ30 | 800 |
| 1000 | 1175 | 1120 | 30 | 28-φ30 | 800 |
| 1100 | 1275 | 1220 | 30 | 28-φ30 | 800 |
| 1200 | 1375 | 1320 | 30 | 32-φ30 | 800 |
| 1300 | 1475 | 1420 | 32 | 32-φ30 | 800 |
| 1400 | 1575 | 1520 | 32 | 36-φ30 | 850 |
| 1500 | 1675 | 1620 | 32 | 36-φ30 | 850 |
| 1600 | 1790 | 1730 | 32 | 40-φ30 | 850 |
| 1800 | 1990 | 1930 | 32 | 44-φ30 | 1100 |
| 2000 | 2190 | 2130 | 32 | 46-φ30 | 1100 |
- Name
- Phone
- Corporate name
- Address
- Leaving Message*
| Add：No. 3106, Chengliu Middle Road, Jiading District, Shanghai City Add：No. 3106, Chengliu Middle Road, Jiading District, Shanghai City | 
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