Manual blind valve
Manual blind valve
Nominal diameter: DN200 ~ 2000mm
Nominal pressure: PN0.05 ~ 0.25MPa
Temperature: <300 ℃
Medium: gas and other toxic and harmful, combustible gas,
The main material: carbon steel, rubber, chromium steel
Standard : Connecting flange size in line with JB / T81-94 standards, testing Methods in line with GB / T13927-92 standards
First, the product features
Manual blind plate valve, also known as manual glasses valve, flap valve, fan valve, for the long series of structures, in the right valve body with a retractor for longer pipeline (Note: not as compensator of the pipeline) , You can compensate for the valve opening and closing process of the axial displacement of the valve body, reducing the valve opening and closing torque. According to the characteristics of large-caliber valves, the valve body is designed into a triangular structure to enhance the overall rigidity of the valve. Rubber seals were installed on the left and right valve body.
Second, the main performance indicators
| 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 |
| Applicable temperature ℃ | Nitrile rubber | Silicone Rubber | fluororubber | |
| <120 | <250 | <300 | ||
| Suitable media | Gas and other toxic, harmful, flammable gas | |||
| Standard | Connection flange size in line with JB / T81-94 standards, testing methods in line with GB / T13927-92 standards | |||
| The main components of the material | Valve body, the gate for the carbon steel; connecting shaft, expansion carbon steel or stainless steel; ring for the rubber | |||
Third, the main dimensions of the connection
| DN | D | D1 | b | n-φd | Long series L |
| 200 | 320 | 280 | 14 | 8-φ18 | 500 |
| 250 | 375 | 335 | 14 | 12-φ18 | 500 |
| 300 | 440 | 395 | 16 | 12-φ22 | 500 |
| 350 | 490 | 445 | 16 | 12-φ22 | 500 |
| 400 | 540 | 495 | 16 | 16-φ22 | 600 |
| 450 | 595 | 550 | 20 | 16-φ22 | 600 |
| 500 | 645 | 600 | 20 | 20-φ22 | 600 |
| 600 | 755 | 705 | 20 | 20-φ26 | 600 |
| 700 | 860 | 810 | 20 | 24-φ26 | 600 |
| 800 | 975 | 920 | 22 | 24-φ30 | 600 |
| 900 | 1075 | 1020 | 22 | 24-φ30 | 630 |
| 1000 | 1175 | 1120 | 22 | 28-φ30 | 630 |
| 1200 | 1375 | 1320 | 22 | 32-φ30 | 750 |
| 1400 | 1575 | 1520 | 26 | 36-φ30 | 750 |
| 1500 | 1675 | 1620 | 26 | 36-φ30 | 750 |
| 1600 | 1790 | 1730 | 26 | 40-φ30 | 750 |
| 1800 | 1990 | 1930 | 26 | 44-φ30 | 750 |
| 2000 | 2190 | 2130 | 26 | 48-φ30 | 750 |
- Name
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| Add：No. 3106, Chengliu Middle Road, Jiading District, Shanghai City Add：No. 3106, Chengliu Middle Road, Jiading District, Shanghai City | 
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