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Flanged duckbill valve

Flanged duckbill valve

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Duckbill Valve
Describe
Flanged duckbill valve
The flanged duckbill valve is effective against seawater and sediment intrusion. There is a certain density difference between seawater and discharged sewage. When the discharge of sewage is small, the conventional discharge diffuser will reduce the jet velocity of the nozzle. This density difference will cause seawater to invade the diffuser and bring the sediment in the seabed into the diffusion. Device. The flanged duckbill valve outlet changes with the change of the flow rate, the discharge is closed at zero, and the high jet velocity can be maintained in the case of low emissions, thus preventing the invasion of seawater and environmental sediment. .
 
[product alias]: flange duckbill valve
[product specifications]: DN100-DN2000
[Product Certification]: ISO 9001-2008
[Scope of application]: Chemical, steel, construction, chemical, steel, tap water
[product material]: the flange is carbon steel, stainless steel. The valve body is rubber
 
Features
The flanged duckbill valve is effective against seawater and sediment intrusion. There is a certain density difference between seawater and discharged sewage. When the discharge of sewage is small, the conventional discharge diffuser will reduce the jet velocity of the nozzle. This density difference will cause seawater to invade the diffuser and bring the sediment in the seabed into the diffusion. Device. The flanged duckbill valve outlet changes with the change of the flow rate, the discharge is closed at zero, and the high jet velocity can be maintained in the case of low emissions, thus preventing the invasion of seawater and environmental sediment. .
Flanged rubber duckbill valve products are mainly used in waterproof systems, exhaust systems, pump outlets, lift pump stations and submerged aeration systems. Main features of the product: the rubber flange and the valve body are integrated into one body, and the installation is extremely convenient. The valve body is designed with full rubber, which does not cause siltation and jamming, which reduces maintenance costs and allows solid particles to pass smoothly.
Dimensional standards for flanged rubber duckbill valves: Generally speaking, there are two installation sizes in the country. One installation size is connected by national standard flange. This is the earliest design of the duckbill valve. In order to cooperate with the national standard, the flange standard of the duckbill valve of 800 or less diameter is specified. The national standard ten kilogram bolt hole center distance and flange are specified. The outer diameter, 800 or more pipe diameter, refer to the national standard 6 kg bolt hole center distance and flange outer diameter. The other installation size is its own size, which is different from the national standard.
Made of rubber flange, valve body and duckbill, with padded metal flange, it can be naturally connected with metal flange and directly mounted on tank, pipe and cofferdam. When installing the connection, the flange corresponds to the size of the connecting flange to ensure absolute sealing after the fastening is tightened, and also to avoid the flange lip of the rubber drain check valve.
The rubber flange is integrated with the valve body for easy installation. The valve body is designed with full rubber, which does not cause siltation and jamming, which reduces maintenance costs and allows solid particles to pass smoothly.
 
Technical Parameters
 
 No.  Part  Material
1  Body Natural rubber (NR), neoprene (CR), butyl rubber (IIR), nitrile rubber (NBR), fluororubber (FKM), EPDM (EPDM)
2 Flange Cast and forged carbon steel Cast and forged carbon steel (Q235), stainless steel Stainless steel (201, 304, 316, 321), plastic Plastic (CPVC, PVDF, PPH, UPVC, RPP)
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

Description: DN800~1800 (32′′~72′′) double hoop Note:DN800~DN1800(32′′~72′′) double hoops

 

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