professional manufacturer supply flexible check valve

FOB Reference Price:Get Latest Price
US $30.14-832.79 / Piece | 1 Piece/Pieces (Min. Order)
Supply Ability:
3000 Piece/Pieces per Month
Qingdao , Tianjin , Shagnhai
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Quick Details
rubber , steel
pipe joint
Place of Origin:
Hubei, China (Mainland)
Model Number:
duckbill valve
Brand Name:
flange or clamp
Head Code:
flange or clamp
DN25mm ~ DN3000mm
rubber , steel
sewage water
carton cases
quality control:
ISO9001 , ISO14001
13 years OEM producing
brand name:
FLSmidth co.A/S
GB , ANSI , JIS , ect
Packaging & Delivery
Packaging Details
general package is carton case , but we can accept your requirement if possible.
Delivery Time
Within 15 days after received the payment

flexible check valve , flexible rubber check valve , duckbill check valve



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


This valve is our special product, and it is used for draining sewage. We are continuously doing our best to make this valve more practical and more perfect .The valve can be matched with straight pipe ,flange pipe ,cement pipe . 


Rubber Duckbill Check Valve characteristics


The advantages are specially marked in comparison with traditional flap valve;

  1. Open and close automatically in security and reliability according to hydraulic difference without noise and in no need of operator and maintenance;
  2. Positive start has little water resistance and start –up pressure and the flow can be adjusted naturally according to hydraulic pressure.
  3. Reserve cut-off has good seal without leakage to prevent from flowing backwards. The back pressure is higher and the effect is barrier;
  4. Anticorrosion, aging resistance, deformation resistance, strong adapt-ability and long use life;  
  5. Wide size scope, nominal diameter of DN50-DN3000.


Applications cope of Rubber Duckbill Check Valve


  1. Excellent performance ad wide application scope
  2. Applicable for sewage system
  3. Applicable for discharge system
  4. Applicable for dyke discharge
  5. Applicable for the drainage of airport and freeway
  6. Applicable for sewer discharge
  7. Applicable for swage lagoon dis-charge
  8. Smell separation


Installation  structure  type


  1. Belled XF-T be installed at the exit of drainage pipe
  2. Flanged XF-T be installed at the exit end with flange of drainage pipe
  3. Mounting plate XF-F be installed on the building at the water exit end.
  4. Build-in XF-F be installed at the exit end of rain and sewage system in cities
  5. Grout or cement pipe XF-T be installed at the end of grout or cement pipe


Basic sizes of slip on duckbill valve and flange duckbill valve we can supply to you .


 Slip on duckbill valve :



 flange duckbill valve :


flexible check valve , flexible rubber check valve , duckbill check valve