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Flange Integral Duckbill Check Valve

  • [Name]:Flange Integral Duckbill Check Valve
  • [PN]: 0.6-2.0Mpa
  • [Medium]: Water, sea water, watse water, drain water, flood, ect.
  • [Material]: NR, NBR, EPDM, PTFE, ect.
  • [Certification]: ISO9001:2008
  • [Specification]: DN25-2400mm
Description
Products Description

Flange integral duckbill check valve is a simple, reliable, cost effective method of backflow prevention. The series flange integral duckbill check valve is designed to be installed between two mating flanges. The simple maintenance-free elastomer with a flanged connection eliminates the mechanical parts which can wear and jam in conventional check valves. For installation at the end of pipe line, the valve can be ordered with optional back up flanges.

Flange integral duckbill check valves are offered as direct replacements for ineffective and maintenance ridden flap type check valves, commonly known to seize, rust and bind in unwanted positions. Unlike flap type valves, this rubber check valve will handle large obstructions without jamming or having swing gates binding open.

Each valve of HUANZHONG is carefully constructed using the finest of engineered materials and some of the most experienced rubber technicians in the industry. All check valves are engineered in precise detail to ensure proper operation and will provide years of unhindered operation and trouble free service.

Features && Specification

 All rubber construction resists abrasive slurries

 
 1.Standard construction
 2.Very quiet operation with no water hammer
 3.Its unique design prevents backflow
 4.Negligible maintenance and energy costs
 5.Will not warp or freeze
 6.Quick interchange with any flap type check valve
 7.Available in sizes 1" – 96"
 8.Available with special I.D to suit concrete pipe


Matching Pipeline Diameter

 

Valve Step(A) Pipeline Touching(B>)
1/2″~3/4″

15

15

1″~1-1/4″

20

20

1-1/2~2-1/2 25

25

3″ 40

40

4″

50

50

6″

50

50

8″ 50

50

10″ 50

50

12″~14″ 100

100

16″~20″

150

150

24″~36″

200

200

42″ 250

250

48″~60″ 300

300

72″ 400

400

 Note:DN800~DN1800(32″~72″) double hoops
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