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XH41A Flanged Duckbill Valves

    Place of Origin: China

Product Description

Flanged Duckbill Check Valve(2"-14") Supply Range is From 50mm to 350mm Connected with Ring Flange, the Material can be Stainless Steel/Cast Iron/Forged Steel Rubber can be NR/NBR/EPDM/NEOPRENE for your option Cost-effective and Maintenance Free Backflow Prevention Automatically Most Professional Mamufacturer From China.

Flanged Duckbill Valves(2"-14")

Duckbill Check Valves, widely used in the demanding applications of many industries, are precision-molded, one-piece elastomeric valves that provide reliable backflow prevention at low pressure differentials. Duckbill check valves allow free flow with positive differential pressure. With negative differential pressure, backflow is checked. Pressure drop across the valve is a feature unique to Duckbill Check Valves. They can be designed to operate in a few millimeters (inches) of water to several hundred kPa (psi), depending on valve size, geometry and compound characteristics. Duckbill Check Valves are also designed to start functioning at specific opening and closing pressure ranges, depending on your specifications.

Flanged duckbill Check Valve DV-XH41A Features:

Easy installation with ring flange, drilling can be DIN/JIS/EN/ANSI

Reliable backflow prevention

100% elastomeric construction eliminates maintenance

Will not corrode, warp or freeze open or shut

1"-2" Cracking Pressure, Low Head loss

Custom built for each application based on pressure and flow conditions

Available in diameters from 1/2" (12mm) to 14"

Flange Duckbill Valves Data Sheet:


SIZE I.D.(mm) VALVE DIMENSIONS Standard Dimensions for Retaining Ring Flange
C(mm) F/F(mm) W(mm) Weight(kg) OD(mm) C(mm) id(mm) Hole Diam. (mm) Bolt Hole Num. T(mm) Weight(kg)
150 240 285 247 3.8 280 240 186 23 8 15 3.7
200 295 346 306 5.2 335 295 230 23 8 15 5.1
250 350 400 380 9.4 390 350 300 23 12 15 5.2
300 400 430 480 12.8 440 400 360 23 12 15 5.3
350 460 520 540 19.4 500 460 410 23 16 17 7.7


1.The weight is approximate.

2. Rubber flange bolt circles DN150-700 according to DIN PN10, DN800-2400 according to DIN PN6. Other standard available as ANSI Class150/300, BS-10, JIS 5K/10K.

3.The retaining ring flange drilling is matched to rubber flange accordingly.

4.Material of the retaining ring flanges usually is carbon steel, painted. SS304/316 available up on request.

5. We can make duckbill valves with any dimensions rubber flange available as per requirement.

6. Duckbill valves of dimensions in the above table are available in inventory. Any other dimensions and designs available upon request.

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Product Categories : Duckbill Check Valve

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