Double Eccentric Butterfly Valves
The double eccentric butterfly valves structure reduces friction of the sealing ring allowing the valve a long service life.
The disc sealing ring has a “T” structure and the sealing pair a linear sealing.
The disc ring, “O”-ring, disc and shaft are replaceable, and the valve can be used for different and medium temperature.
Double eccentric butterfly valves can be supplied in different face to face executions according to your request. (example DIN3202 F4/F5，ISO5752 Service 13/14 , BS5155. EN 585-1 serie 13 and 14).
The Double Eccentric Butterfly Valves can be supplied with bare shaft, lever, gear, pneumatic actuator or electrical actuator.
PRESSURE TEMPERATURE RATINGS
| Working pressure | 10bar/16bar/25bar |
|---|---|
| Testing Pressure | Shell:15bar/24bar/37.5bar Seal:11bar/17.6bar/27.5bar |
| Working Temperature | -10 to 120 |
| Suitable Media | Water, Oil&Gas |
DOUBLE ECCENTRIC BUTTERFLY VALVES MATERIALS LIST
| Part | Material | EN Spec. |
|---|---|---|
| Body | Ductile Iron | EN-JS 1050 |
| Disc | Ductile Iron Bronze Stainless Steel 304 Stainless steel 316 | EN-JS 1050 |
| Shaft | Stainless Steel 431 | BS970 431 S 29 |
| Packing | Flexible Graphite | Non-Asbestos |
| Seat Ring | Stainless Steel 304 | BS970 304 S 15 |
| Rubber Seals | EPDM / NBR |
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