VBN series butterfly valve is a type of flow control device, used to make a fluid start or stop flowing t...
InquireA. Silicon or FPM seal
B. Connection end: Weld, Clamp, Male, Nut&Liner or Flange
C. Manual pull handle with two or four positions
D. Multi positioning handle in material stainless steel or plastic
E. Control TOP for control and indication
F. Install with inductive proximity switches

| Feature | EPDM | NBR | FKM | Silicon | PTFE |
|
Working Temperature Range |
-48〜135℃ -55〜275℉ |
-40〜120℃ -40〜248℉ |
-29〜204℃ -20〜400℉ |
-62〜232℃ -80〜450℉ |
-40〜232℃ -40〜450℉ |
|
Acid Resistance |
Excellnet | Good | Good | Good | Excellnet |
|
Alkali Resistance |
Excellnet | Good | Good | Bad | Excellnet |
| Petrol-Resistance | Bad | Excellnet | Excellnet | Good | Excellnet |
| Diesel-Resistance | Good | Good | Excellnet | Good | Excellnet |
| Tear Resistance | Excellnet | Good | Good | Excellnet | Excellnet |
| Bearing Capacity | Normal | Good | Excellnet | Excellnet | Excellnet |
Butterfly valve seal performance diagram for different materials

Medium resistance-volume change rate %

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