The breech lock closure type heat exchanger is characterized by reliable sealing performance, easy dismantling and assembling, high utilization ratio of heat exchange area and small grounding.
螺纹锁紧环换热器具有密封性能可靠，拆装方便，换热面积的利用率高，结构紧凑，占地面积小等特点。
2
Therefore, the valves are the new high performance energy-saving check valves with all strong points of Triple Eccentric Hard Sealing Butterfly Valves and Normal Slow Closure Type Check Valves.
本阀一种集三偏心硬密封蝶阀和常规缓闭止回阀所有优点于一身的新型高效节能止回阀。
3
To ensure tight closure, and the valve seat valve sealing surface of the ground.