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Hard seal flange butterfly valve
The triple eccentric hard seal butterfly valve is mainly used to cut off the fluid and regulate the flow on the pipelines of petroleum, chemical, metallurgy, water heating, hydropower, gas, etc. with high temperature, high pressure and obvious erosion phenomenon.
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Introduction
Product use
The triple eccentric hard seal butterfly valve is mainly used to cut off the fluid and regulate the flow on the pipelines of petroleum, chemical, metallurgy, water heating, hydropower, gas, etc. with high temperature, high pressure and obvious erosion phenomenon.
Product features
·The unique design of triple eccentric makes the sealing faces drive without friction, which extends the service life of the valve.
·The ingenious wedge-shaped design enables the valve to have the automatic sealing function of tightening as it closes, and there is compensation and zero leakage between sealing surfaces.
·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.
·Small size, light weight, light operation and easy installation.
·The replaced parts can be made of materials suitable for various media and can be lined for anti-corrosion.
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 D343H/Y/F | Worm gear/pipe network |
| Pneumatic D643H/Y/F | Switch/regulation/fast switching/explosion-proof |
| Electric D943H/Y/F | Switch/regulation/intelligent/explosion-proof |
Main parts and materials
| Valve body | WCB/304/316 |
| Valve body plate | WCB/304/316 |
| Stem | 20Cr13 |
| Filler | Flexible graphite/PTFE |
| Valve seat | Hardfacing 507Mo |
| Seal ring | Stainless steel multi-layer/stainless steel |
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Message
Main： Butterfly valves, blind valves, gate valves, globe valves, ball valves, check valves, regulating valves, gates, metallurgical valves, hydraulic dams
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