KSB Group는 6월 해수 담수화에서 역행 방지판으로써 기능을 하는 나비꼴 차단밸브 출시를 준비하고 있다고 밝혔다.
정상 작동동안 Dualis의 밸브는 전기 유체식으로 작동되는 나비꼴 밸브로 ISO 5208과 EN 12266-1를 견고하게 한다. 만약 작동이 불가능한 상태에서 서지압력과 역류로부터 펌프와 물 터빈, 파이프라인를 보호하기 위해 조절가능한 속도로 밸브를 잠근다고 설명했다.

KSB Group is poised for a July launch of its new shut-off butterfly valve that also functions as a check valve in seawater desalination.

During normal operation, valves of the Dualis series work as electro-hydraulically actuated butterfly valves with a category A tightness to ISO 5208 / EN 12266-1. In the event of a failure, the valve will close at an adjustable speed to protect pumps, water turbines and pipelines from surge pressure and backflow.

It is manufactured in nominal sizes ranging from DN 500 to DN 1400 for pressure classes PN 6 to PN 40. The valve has been designed for applications in water transport, water distribution, seawater desalination and hydropower as well as in industrial cooling circuits.

 

[출처 = Desalination & Water Reuse / 2014년 7월 17일]