Double butterfly valves can be used in most liquid product applications in the food processing, pharmaceutical and chemical industries.LBV (Leakage Butterfly Valve) valves allow easy and safe separation of product and prevent accidental mixing in the event of gasket failure. The most common applications are those requiring safe separation of product and CIP solution at a single point (rather than in a manifold) or at the end of a manifold (e.g., CIP return) or feeding CIP solution into a storage tank (via piping). (Spray Balls).
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Double Butterfly Valve |
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| Body Material | 316L |
| Handle Material | 304 |
| Gasket | EPDM according to FDA |
| Internal surface | Ra ≤ 0,8 μm |
| External surface | Machined |
Features
- Compact and robust design.
- Low pressure loss.
- Interchangeable halves (any connection type).
Working Principle
Double butterfly valve with double safety: two butterfly valves are actuated by only one actuator at the same time.When the two valves are closed, there is a chamber between them. The chamber is at atmospheric pressure when open to the outside, so that if either of the two gaskets fails, leakage of liquid product will indicate any possible mixing of product. The status of the gaskets is monitored by either of the two leak detectors. The other detector (upper stage) controls the entry of cleaning fluid to prevent any type of contamination within the chamber. These two leak detectors provide optimal protection and the ability to clean the intermediate chambers.
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