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Xh41-wz duckbill valve

The duckbill valve can effectively prevent the invasion of sea water and sediment. There is a certain density difference between seawater and discharged sewage. When the sewage discharge is small, the traditional outlet diffuser will cause seawater intrusion into the diffuser due to the decrease of jet velocity at the nozzle, and the sediment in the seabed environment will be brought into the diffuser. ...

Product alias: Duckbill valve
Product specification:【 DN32mm-DN1800mm】
Connection mode: flange
Scope of application:【 Acid, alkali, corrosion, oil, hot water, cold water, etc.]
Product material: Environmental friendly high quality synthetic rubber; environmental protection, no pollution, no lead and other poisons

  • Product introduction
  • Product advantages
  • Product diagram
  • technical parameter
  • Ordering instructions

    Curved mouth Duckbill valve It can effectively prevent the invasion of sea water and sediment. There is a certain density difference between seawater and discharged sewage. When the sewage discharge is small, the traditional outlet diffuser will cause seawater intrusion into the diffuser due to the decrease of jet velocity at the nozzle, and the sediment in the seabed environment will be brought into the diffuser. And crooked mouth Duckbill valve The outlet is closed when the discharge is zero, and it can maintain a high jet velocity when the discharge is low, so it can prevent the invasion of seawater and environmental sediment.
    Duckbill valve products are mainly used in waterproof system, drainage system, pump outlet, lifting pump station and submerged aeration system. Main features of the product: rubber flange and valve body are connected as a whole, which is convenient for installation. 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.
    The size standard of duckbill valve: Generally speaking, there are two installation sizes in China. One installation size is connected with the national standard flange. This is when the duckbill valve was designed earlier, in order to match with ~ standard, the flange standard of duckbill valve with diameter below 800 was specified. The center distance of bolt hole and outer diameter of flange in the national standard of 10kg and the outer diameter of flange were involved in the design of duckbill valve. The other installation size is its own size, which is different from ~ standard.

    1. The flange and pipe assembly of duckbill valve shall be used to check the end face of the pipe with tools and methods. The inclination deviation of the cut end face shall not be greater than 1% of the outer diameter of the pipe and shall not exceed 3 mm.
    2. When assembling the flange and pipe of duckbill valve, check the verticality of flange with flange angle square.
    3. The soft gasket should be added when the duckbill valve is connected. The peripheral dimension should be neat and the gasket size should be consistent with the flange sealing surface.
    4. The flange of duckbill valve shall not be buried in the ground. The flange of buried pipeline or non passing trench pipeline shall be provided with inspection well, and the flange shall not be installed in floor, wall and casing.
    5. The flange connection of duckbill valve should be concentric with the pipe, and the bolt should be free to penetrate. The flange bolt holes shall be installed in the middle of the span, and the flanges shall be kept parallel, and the deviation shall not be greater than 1.5/1000 of the flange outer diameter, and shall not be greater than 2 mm. It is not allowed to eliminate the skewness by using the method of tightening the bolts with strength.
    6. The flange connection of duckbill valve should use the same specification of bolts, and the installation direction should be consistent. After the bolts are tightened, they should be close to the flange without any fine seam. When a washer is needed, each bolt shall not be more than one, and the tightened bolt should be flush with the nut.
    7. When tightening the bolts, the bolts should be symmetrically crossed to ensure that the stress on the gasket is uniform.

     Xh41-wz duckbill valve

    [product appearance and structural dimensions]
     
    Flange diameter (ANSI) Flange outer diameter (f) Length (L) Duckbill height (H) Flange diameter (ANSI) Flange outer diameter (f) Length (L) Duckbill height (H)
    DN15 31/2 DN400 231/2 twenty-six twenty-seven
    1½" 16"
    DN20 three DN450 twenty-five thirty twenty-nine
    3/4" 18"
    DN25 41½ three 11½ DN500 271/2 thirty-three thirty-three
    1" 20"
    DN40 five six three DN550 291/2 thirty-six thirty-three
    11/2" 22"
    DN50 six six four DN600 thirty-two thirty-nine thirty-seven
    2" 24"
    DN65 seven eight five DN750 383/4 forty-two fifty
    21/2" 30"
    DN80 nine 51½ DN800 413/4 forty-eight fifty-three
    3" 32"
    DN100 nine twelve seven DN900 forty-six forty-nine sixty-one
    4" 36"
    DN125 ten 151/2 nine DN1050 fifty-three fifty-four seventy-one
    5" 42"
    DN150 eleven sixteen 101/2 DN1200 591/2 fifty-nine seventy-eight
    6" 48"
    DN200 131/2 161/2 thirteen DN1350 661/4 sixty-nine ninety-seven
    8" 54"
    DN250 sixteen 211/2 seventeen DN1500 seventy-three seventy-four ninety-seven
    10" 60"
    DN300 nineteen 261/2 201/2 DN1800 861/2 ninety-five one hundred and fifteen
    12" 72"
    DN350 twenty-one twenty-six twenty-two DN2100 993/4 ninety-two one hundred and eleven
    1. If the customer has special requirements for the product, the following instructions shall be provided in the order contract:
    (1) Structural length
    (2) Connection form
    (3) Nominal diameter, full bore, reduced diameter, pipe size
    (4) Service medium, temperature and pressure range
    (5) Our factory can make and design special products according to the special requirements of customers.
    2. Our factory can configure and design special products according to the special requirements of customers.
    3. If the customer provides the determined product type and model, the customer shall correctly explain the meaning and requirements of the model, and sign the contract under the condition that both parties understand and agree.

Products with high sales volume

 Square duckbill valve

Square duckbill valve

The square mouth can effectively prevent the invasion of sea water and sediment. seawater
 Built in duckbill valve

Built in duckbill valve

Built in machine, system and drain valve
 Clamp type duckbill valve

Clamp type duckbill valve

The clamp type duckbill valve is a special structure, which has a "duckbill" shape and a "positive" shape

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Hu ICP Bei No. 10030623 copyright Shanghai Luoying pipeline equipment Co., Ltd Mirror image must be investigated