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Duckbill valve

Product Overview

Duckbill valve can be divided into sleeve type, inlaid type, built-in type, flange type, installation plate type, mortar or cement pipe type according to the installation mode. Duckbill valve is an ideal product for urban rainwater and sewage system, with full rubber structure, corrosion resistance and long service life. It is an ideal check valve product with less head loss.

Structural characteristics

Duckbill valve body and duckbill are made of one body, and are equipped with gasket metal flange, which can be connected with metal flange naturally, and can be directly installed on tank body, pipeline and cofferdam. When installing and connecting, the size of flange and connecting flange should be corresponding. Waterproof glue should be added between flange and connecting flange according to the specific situation to ensure absolute sealing after connection and fastening. Attention should be paid not to damage the flange lip of flexible check valve. The rubber flange is connected with the valve body, so the installation is very convenient. The valve body adopts full rubber design, which will not cause silting and jamming, reduces the maintenance cost and allows the solid particles to pass through smoothly. It is mainly used in sewage system, discharge system, pump outlet, lifting pump station and submerged aeration system.

Execution standard


Performance parameter

Nominal diameter: DN100~2000mm
Nominal pressure: PN1.6mpa
Applicable temperature: 0oC ~ +80oC
Suitable medium: water, sewage, sea water, oil
Main materials: neoprene, Hepron, butadiene rubber and ethylene propylene rubber, etc

Product Dimensions

Nominal diameter(DN) Tube outer diameter(DW) Length(L) Height(H) Set of depth(C)
Dw Do
100 108 108 158 100 40
114 114
150 159 159 270 200 50
168 168
200 219 219 320 255 50
250 273 273 360 265 75
300 325 325 450 325 115
350 377 377 560 425 115
400 426 426 650 525 135
450 480 480 750 625 150
500 530 530 850 725 200
600 630 630 950 825 200
700 720 720 1060 925 200
800 820 820 1200 1080 250
900 920 920 1260 1250 250
1000 1020 1020 1450 1400 250
1200 1220 1220 1620 1550 250
1400 1420 1428 1720 1725 300
1600 1620 1628 2010 1950 350
1800 1820 1828 2280 2320 400
2000 2020 2030 2600 2650 450

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