High-rising building fire fighting system, near fire pump
To prevent the water flow back
Construction: Swing check type
End connection: Flange at both side
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:350 PSI
Normal size: 2''-8''
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 with upward flow
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
Easier and faster to maintain and install