SF-500
Butterfly Emergemcy Self-Cosing (DN1500)
Features
- ① The conventional joint use of sluice valve and check valve can be replaced by single emergency self-closing valve of hydraulic and butterfly valve style.
- ② At emergency (stop of powr supply) when the valve should be closed quickly, it is closed automatically without external force preventing reverse flow. Other check valves and because the disc is closed slowly at the closed condition by 80%, when water sammer should be cut quickly, the reverse flow can be cut efficiently without giving troubles on valved and pressure by hitting to the disc.
- ③ This has a structure to control the oil quantity by keeping the medium open degree.
- ④ The expenses of installation may be reduced by replacement of two valves with one.