Rubber Flap Flange Type Water Silicone Duckbill Check Valve
Duckbill check valve slowly closing cut off valve is a new water supply and drainage valve with full rubber structure
,”duck-mouthed” appearance and function of “positive flow –in and
reserve-off”. According to thrust analysis and calculation as well
as different operation condition .it is manufactured with different
design mechanism and different rubber products by special
processing .At positive operation the water flow in form entrance
and the valve will be open at weak hydraulic pressure ;the
hydraulic pressure id higher ,the valve gate will open more greatly
and the water flow is greater .At reserve operation ,the valve gate
closes naturally and seals tightly cut-off valve ;the back pressure
is higher ,the valve gate closes more tightly and the seal effect
is better .it is used widely in various drainage exit to prevent
form pouring backwards and flowing backwards in city planning
,water conservancy and sewage disposal etc. it is the ideal product
to replace flap valve.
Pressure and temperature
Shell: 1.5 times rated pressure,
Seat: 1.1 times rated pressure.
-10°C to 80°C (NBR)
-10°C to 120°C (EPDM)
|suitable media||Water, Oil and gas.|
Main material list
|body||Chloroprene rubber, Neoprene, NBR & EPDM rubber, etc.|
|seat ring||NBR / EPDM|
Features & Benefits
• Packaged in pallet box containers or on pallets, adequately
protected for shipment.
• Each valve is individually tested.
• Various materials and services available to meet your unique
Mainly used in water systems,drainage systems,outlet of water pumps
and upgrading the pumping station and liquid aeration system.Rubber flange and valve body are as a whole, so the installation is
very convenient.The valve body is designed with a full rubber,
which will not cause siltation and stickin. It reduces the maintenance
cost, and allow the solid particles to pass smoothly.