一、Certificates: FM approved and UL listed
二、Application: High-rising building fire fighting system, near fire pump
三、Purpose: To prevent the water flow back
Design standard : AWWA C508
End connection: Flange at both side
Construction: Swing check type
Flange standard: ASME/ANSI B16.1 Class 125 or ASME /ANSI B16.42 Class 150 or BS EN1092-2 PN16 or GB/T9113.1
Normal pressure:300 PSI
Normal size: 2’’-12’’
Surface: Epoxy resin coating both inside and outside the body
It is suitable for supply and drain line.
It is very flexible to open and close the valve .
It can be installed both horizontal and vertical direction.
The disc is uploaded by spring to decrease the water hammer pressure when closing quickly . Sealing propertity is better
No noise when closing
Small volume, light weight, small hydraulic resistance .
Better antifatigue ability.and Longer lifetime