The double eccentric butterfly valve is further optimized on the basis of the single eccentric butterfly valve. It adds a valve shaft eccentricity, so that after the valve is opened, the sealing pairs can quickly separate from each other, which greatly eliminates unnecessary excessive extrusion between the sealing pairs. It reduces the opening resistance, reduces the wear of the sealing ring, and extends the service life of the valve. Its superior sealing and stability make the product widely used in water, petrochemical, electric power and other industries.
Eccentric Valves Specifications
|
Size Range |
Body Material |
|
2"-80" DN50-DN2000 |
WCB, CF8, CF8M, CF3, CF3M, WC6, LCB etc. |
|
Pressure Rating |
Disc Material |
|
Class150 PN6-PN25 |
WCB, CF8, CF8M, CF3, CF3M, WC6, LCB etc. |
|
End Connection |
Seat Material |
|
Flange (RF, RJ), Butt Welding, Lug, wafer |
PTFE, EPDM, NBR, RPTFE |
|
Structure Style |
Stem Material |
|
Full Port, Double Eccentric |
17-4PH, SS410, F304, F316, F51, F53 |
|
Actuator Options |
Design Standard |
|
Lever, Worm Gear, Pneumatic, Electric. |
API 609, MSS SP-67, MSS SP-68, DIN3354, EN558, JIS B2071 |
|
Temperature Range |
Face to Face Standard |
|
-50℃~650℃ |
ANSI B16.10, MSS SP-68, EN558-1, JIS B2002 |
|
Connection Standard |
Test Standard |
|
Flange Drilling: API609, ASME B16.5, ASME B16.47, EN1092, JIS B2220, GOST 12815 Butt Weld: ASME B16.25, GB/T 12224 |
API598, EN12266.1, JIS B2003 |
Double Eccentric Valves
- Structural features of double eccentric butterfly valve
1. Reasonable design, compact structure, easy assembly and disassembly, and easy maintenance.
2. Adopt an eccentric structure to reduce the friction of the sealing ring and extend the service life of the valve.
3. Completely sealed with zero leakage. Can be used in ultra-high vacuum conditions.
4. Replace the valve plate sealing ring, butterfly plate, rotating shaft and other materials, which can be applied to a variety of media and different temperatures.
5. The sealing ring design will not affect the seal due to impurities. The rubber does not require pressure. The uniform mutuality ensures long-term replacement and is completely reliable in adjustability or replaceability.
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