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Pneumatic blind valve
It is widely used in water supply and drainage, water treatment, electric power, shipbuilding, chemical industry, medicine and other industries to cut off fluid and regulate flow.
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Introduction
Product use
It is widely used in water supply and drainage, water treatment, electric power, shipbuilding, chemical industry, medicine and other industries to cut off fluid and regulate flow.
Product features
·The main body of valve body and valve plate is made of ductile iron, and the sealing pair is made of stainless steel and rubber, with a long service life.
·The valve shaft is of semi axial structure, and the butterfly plate is of truss type, with large flow area, small flow resistance, energy saving and high efficiency.
·A connection seat is set between the flange and the driving part of the valve, and the bolts for fixing the packing gland can be adjusted through the seasoning window on the connection seat to ensure the sealing of the shaft system.
·The rubber seal ring can be set on the valve body and butterfly plate for users to choose.
·The sealing part can be adjusted and replaced, and the sealing performance is reliable.
·The valve adopts double eccentric structure, with two-way pressure bearing function, which is convenient to install in the pipe network with two-way pressure.
·The pipe network butterfly valve installed horizontally underground has a synchronous display mechanism, which can observe the opening and closing status of the valve from different operating directions.
standard specification
| Design Criteria | GB/T12238 |
| Structure length | GB/T12221 |
| Flange connection size | GB/T1724.6 |
| Inspection and test | GB/T13927 |
Model and transmission mode
| Manual G/D342X/F | Worm gear/pipe network |
| Pneumatic D642X/F | Switch/regulation/fast switching/explosion-proof |
| Electric D942X/F | Switch/regulation/intelligent/explosion-proof |
Main parts and materials
| Valve body | QT450/WCB/304/316 |
| Valve plate | QT450/WCB/304/316 |
| Stem | 20Cr13 |
| Filler | Flexible graphite/PTFE |
| Valve seat | Overlay welding 309L |
| Seal ring | EPDM/F46 |
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Main： Butterfly valves, blind valves, gate valves, globe valves, ball valves, check valves, regulating valves, gates, metallurgical valves, hydraulic dams
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