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PRODUCTS / Concentric Butterfly valves / Rubber Seated Butterfly valves
Jeongdo Machinery's Concentric Rubber Seated Butterfly Valves are available in Wafer, Lugged, Grooved, and Flanged types, depending on the connection method.
They are designed to suit a wide range of operating conditions and are applicable for various fluids such as water, ultrapure water, oil-free systems, seawater, and chemicals, as well as different pressure requirements.
Features a Hard Back Ring (with shock-absorbing) design and precision-cast disc for enhanced durability and sealing.
4 or more Guide Holes ensure easy installation.
Hard Back Ring structure minimizes seat deformation and enhances sealing performance.
A patented Shock-absorbing ring inside the Back Ring reduces friction during disc rotation, significantly improving sealing and durability.(Patent No. 10-1996560 )
| Design Standards | |
|---|---|
| Valve Design | API 609 Category A |
| ASME B16.34 | |
| MSS-SP 67 | |
| Flange Drilling | ASME B16.5 |
| Face to Face | API 609, ISO 5752 |
| Specfication | |
|---|---|
| Body Type | Wafer / Lugged / Flanged |
| Size | 1 1/4 " ~ 64" |
| Flange Connection | ASME 150 |
| PN 10/16 | |
| Temperature Range | EPDM (-20℃~120℃ ) |
| NBR (-10℃~80℃ ) |
| Material Option | |
|---|---|
| Body | Cast Iron / Ductile Iron |
| Aluminum Alloy | |
| A216-WCB | |
| A351-CF8 / CF8M / CF3M | |
| DISC | A351-CF8 / CF8M / CF3M |
| Monel, Duplex | |
| Stem | SS420, SS431 |
| SS316 / SS630 | |
| Seat | EPDM |
| NBR |
