No Friction Pneumatic Butterfly Valve Zero Leakage Adjustable WIth Long Lifttime
No Friction Pneumatic Butterfly Valve Zero Leakage Adjustable WIth Long Lifttime
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- Product Model: D643H
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Pneumatic Actuated No Friction Triple Eccentric Butterfly Valve WIth Long Lifttime
Triple eccentric butterfly valve, WCB and stainless steel body, multilayer SS+graphite seat ring, available with gear, pneumatic, electric actuator, ISO5211 top flange for easy actuator exchange; For high temperature high pressure applications.
Brief Specifications:
| Size Range: | DN50-DN600 (2″-12″) |
| Body Materials: | Stainless Steel CF8M, CF-8, WCB |
| Disc Materials: | Stainless Steel CF8M, CF-8, WCB |
| Seat Materials: | AISI 316, AISI 304, STELLITE |
| Shaft Materials: | 17-4PH |
| Applications: | Petroleum, Natural Gas, Chemical, Power, Water |
| Pressure Rating: | PN10/16/25/50/64/100 |
| Temperature Rating: | Min -196°C Max 760°C |
Design Standard
| Pressure Testing: | EN 12266-1, DIN 3230, BS 6755, ISO 5208, Body: 1,5 x PN, Seat: 1,1 x PN |
| Flange Connection: | DIN 2501 PN10/16, ISO 7005-1/2, ANSI B16.5 Class 150, MSS SP44 Class 150, AWWA C207, AS 2129, BS10 |
| Face 2 Face: | EISO 5752 Short, Series 20, BS5155 Wafer Short/Medium, DN 3202 Part 3, Series K1 |
| Top Connection: | BISO 5211 |
| Tolerances: | ISO 2768-m |
Seal design
Stainless Steel & Graphite Multi Layer Seal
- The Triple Offset Butterfly Valve plate seal ring is designed and manufactured in multiple layers. This seal compresses to give flexibility and elasticity during travel.
- A metallic composite cone beveling is machined to enable the cam effect upon opening and closing of the valve.
- Zero friction and interference between the valve seat and plate seal produces a free stroking cycle.
- Optional sealing materials are available for certain temperature and media applications.