Description of slip-on duckbill check valve 

Sewage rubber check valves: is made in our company have been constantly receiving reputation not only at home but overseas.

The rubber In-Line Check Valve is all rubber reinforced. It consists in an elastomer sleeve flattened in one end. The Duckbill valve can only be opened when the forward flow lifts the sealing flattened side of the sleeve that, otherwise its natural position is to be closed.

The rubber In-Line Check Valve requires no external power sources and because there is not mechanism it doesn't require maintenance, therefore it can be more competitive than other valves used for the same function such as gate valves.

• 1. Reliable back flow prevention
• 2. Installs inside piping with expansion clamp, zero face to face dimension
• 3. 100% elastomer construction eliminates maintenance
• 4. Will not corrode, warp or freeze open or shut
• 5. 1”-2” Cracking Pressure
• 6. Custom built for each application based on pressure and flow conditions
• 7. Available in diameters from 2" (50mm) to 96” (2400mm)

Materials of construction

Elastomer Information

Expansion Clamps

304 Stainless Steel (Std.)

316 Stainless Steel

Special Alloys Available

You can see design picture

Character of duckbill check valve 

rubber duckbill 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 . rubber duckbill valve   can be matched with steel  pipe ,cement pipe .At the same time , rubber duckbill valve may be widely used on the coast,seasands,reservoirs,and so on.In order to dispose the sewage or to dredge the floods.
 
Some elastomers can hand corrosive or abrasive fluids such as raw sewage, sludge or slurries.  rubber duckbill valve operating temperature of the valve is limited by the elastomer temperature capacity. 
 
rubber duckbill valve rubber is all rubber reinforced.  rubber duckbill valve consists in an elastomer sleeve flattened in one end.   rubber duckbill valve can only be opened when the forward flow lifts the sealing flattened side of the sleeve that, otherwise its natural position is to be closed.
 
  rubber duckbill valve   requires no external power sources and because there is not mechanism it doesn't require maintenance, pressure safety valve therefore it can be more competitive than other valves used for the same function such as gate valves.
 slip on duckbill valve , rubber check valve ,   rubber duckbill valve