Dn150 pn16 natural rubber thermal expansion valve one-way valve
|2. Construction||inner core,outer cover,frame,metallic ring,|
|3. connector approval||flange,flange type,threaded type flexible coupling rubber|
|4. type||single sphere,double sphere and reducing sphere,|
|5. threads||BSPT ,BSP,NPS,NPT,Metric|
|6. flange drilled||BS,ANSI,DIN,JIS,UNI,or others provided drawings sample|
|7. surface||galvanized ,epoxy|
|8. normal size||single sphere(DN32-DN3000),double sphere(DN32-DN1200)threaed
flexible coupling rubber (DN15-DN80)|
|9. usage||protecting piping and equipment system from stress or motion|
Rubber blowdown check valve is also known as rubber flexible check
valve, as the valve is shaped like a duck's bill, is often called a
duck's bill valve. Duck bill valve is widely used in urban drainage
and drainage system and sewage pipe network. Duckbill valve is a
one-piece structure, 100% rubber material, with a nylon cord rubber
cover built in, without any mechanical parts. The valve has good
opening and closing characteristics. It only controls the valve
opening and closing by internal pipeline pressure and external
back-pressure. The valve is completely resistant to sewage
corrosion. When the valve is closed, the leakage is zero and the
sealing performance is good.
Rubber Duckbill Valves is a very reliable and cost effective check valve compare to flap
check valves and other conventional check valves.This valve is a special product ,and it is used for draining
sewage .In many foreign countries,such as Spain , America,it is
usually named as duckmouth-shaped valve .We are doing our best to
make this valve more practical and more perfect .The valve can be
matched with steel pipe ,cement pipe .At the same time ,they may be
widely used on the coast,seasands,reservoirs,and so on.In order to
dispose the sewage or to dredge the floods.
For BS EN1092-2 PN10/16 flange mounting.
Face-to-Face dimension conforms to ISO 5752 / BS EN558.
Epoxy fusion coating.
Features & Benefits
1. Automatically open and close according to pressure differential
pressure,safe and reliable,no noise,no need of persoonnel to
2. Forward turn-resistance ,a small start-up pressure and flow
naturally adjusted according to the water pressure.
3. Reverse backstop sealed,no leaks,it prevents backflow,the
greater the back pressure,the better the results.
4. Anti-corrosion,anti-aging,deformation,adaptability,long service
5. A wide range of sizes,nominal diameterDN50-DN3000
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.