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Products Square big duckbill valve

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Square duckbill valve

The square mouth can effectively prevent the invasion of sea water and sediment. There is a certain density difference between seawater and discharged sewage. When the discharge volume of sewage is small, the density difference of traditional outlet diffuser will cause seawater invasion and diffusion due to the decrease of jet velocity

Product alias: Square 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

    square 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 square 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.

    The square mouth 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. However, the outlet of square duckbill valve changes with the change of discharge rate. When the discharge is zero, the outlet of square duckbill valve can maintain a high jet velocity under the condition of low discharge, so as to prevent the invasion of seawater and environmental sediment.
    Square rubber 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 square and valve body are connected into one, easy to install. 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.
    Square rubber duckbill valve size standard: Generally speaking, there are two installation sizes in China. One installation dimension is connected in square according to national standard. This is very early when the duckbill valve was designed. In order to match with the national standard, the flange standard of duckbill valve with diameter below 800 was specified. The center distance of bolt hole and the 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 is its own size, which is different from the national standard.
    The flange and the valve body can be directly connected with the flange of the cofferdam and can be directly connected with the metal flange of the tank body. During installation and connection, ensure that the connection is tight and sealed, and pay attention not to damage the square lip of rubber drain check valve. Installation is 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.

     Square duckbill valve

    [product appearance and structural dimensions]
    Connection size of square duckbill valve:
     
    FX HF length
    (L)
    Duckbill height
    (H)
    A outer diameter of pipe Casing depth (c) Flange size (ANSI) Flange outer diameter (f)
    DN100 four nine ten eight
    4"
    DN150 two six eleven fourteen 111/2
    6"
    DN200 two eight 131/2 171/2 151/2
    8"
    DN250 three ten sixteen 211/2 nineteen
    10"
    DN300 four twelve nineteen twenty-six 221/2
    12"
    DN400 five sixteen 231/2 thirty-two thirty
    16"
    DN500 eight twenty 271/2 forty-two thirty-seven
    20"
    DN600 eight twenty-four thirty-two forty-six forty-three
    24"
    DN750 nine thirty 383/4 fifty-six fifty-five
    30"
    DN900 ten thirty-six forty-six sixty-five sixty-nine
    36"
    DN1050 ten forty-two fifty-three sixty seventy-one
    42"
    DN1200 ten forty-eight 591/2 sixty-five seventy-eight
    48"
    DN1500 thirteen sixty seventy-three seventy-three ninety-one
    60"
    DN1800 sixteen seventy-two 861/2 eighty-four one hundred and ten
    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