Clamp Connection Rubber Check Valve

Update£º2017/3/20 14:28:18      Click£º
  • Brand   Lanphan
  • Model   
  • Description

    Clamp connection rubber check valve¡¯s diameter gradually reduce along flow direction, and gradually ...

Product Introduction
Clamp connection rubber check valve
Product Description

Clamp connection rubber check valve¡¯s diameter gradually reduce along flow direction, and gradually forming a duckbill shape sealing parts, so it is also called clamp type rubber duckbill valve, belled type duckbill check valve. It adopt clamp to connect and fasten, assembling is more convenient. The connection part of clamp connection rubber check valve is sleeve and pipe, which will insert the sleeve, and fasten with steel clamp, sometimes, the pipe and sleeve inside wall can cover water project glue to seal better. Gasket Should be appropriately applied between the clamp mount, fastening bolts, if the use of auxiliary liner, when connecting, auxiliary liner and reserved pipe should be sealing welded. Please note that the nominal diameter is larger than DN800, the body weight will be very large, when operation, a lot of remain water will be left in the abdominal cavity body and water impact effect, a supporting rod shall be increased. It can prevent flood and waste water to flow backward to sewer and basement, and avoid heavy loss; it can prevent flood to flow backward to waste water plant and drainage pump station; prevent waste water or peculiar smell fluid spread and can drain away water at any time; In rainy season, rubber check valve can prevent the flood of inland river from sewer to street; The quality is better than flap valve, and overcome the uptight close disadvantage of flap valve.Rubber material usually is Natural rubber and Neoprene rubber. Natural rubber is fit for waste water which includes alkali and acid; Neoprene rubber can wear UV,and fit for outdoor environments.Clamp material is carbon steel or stainless steel.

Working Principle

It is a full rubber structure, with "positive inflows reverse backstop" new drainage valve product features. It is calculated based on stress analysis and stress for different conditions, different design mechanisms, use of different rubber formulations, make according to a special process . When forward, the water floods from the inlet and tiny water pressure, will be able to open the valve. The greater of the pressure, the valve opens larger, the greater of the water flow. Reverse work, valve port close naturally, sealed backstop, the larger back pressure, the more tightly of the valve port, sealing the better, maximum back pressure which can be made to withstand varying degrees by an elastic material and the rubber compound.

Product Features

  1. Automatically open and close according to pressure differential pressure, safe and reliable, no noise, no need of personnel to operate, no maintenance;
  2. Forward turn-resistance, a small start-up pressure and flow naturally adjusted according to the water pressure;
  3. Reverse backstop sealed, no leaks, it prevents backflow, the greater the back pressure, the better the results;
  4. Anti-corrosion, anti-aging, deformation, adaptability, long service life;
  5. A wide range of sizes, nominal diameter DN50 ~ DN3000.


Type Nominal diameter of pipe L for length H for length C for external diameter of flange
XF50-158-T 50 158 100 25
XF80-232-T 80 232 140 40
XF100-270-T 100 270 200 40
XF150-360-T 150 360 265 50
XF200-450-T 200 450 325 50
XF250-560-T 250 560 425 75
XF300-650-T 300 650 525 115
XF350-750-T 350 750 625 115
XF400-850-T 400 850 725 135
XF450-950-T 450 950 825 150
XF500-1060-T 500 1060 925 200
XF600-1200-T 600 1200 1025 200
XF700-1200-T 700 1260 1125 200
XF800-1450-T 800 1450 1400 250
XF900-1620-T 900 1620 1525 250
XF1000-1720-T 1000 1720 1725 250
XF1200-2010-T 1200 2010 1950 300
XF1400-2280-T 1400 2280 2320 320
XF1600-2600-T 1600 2600 2650 350
product detailsproduct details


  1. Applies to the sewage system;
  2. Applies to the exhaust system;
  3. Suitable for dam discharge;
  4. Applicable to the airport, highway drainage;
  5. Suitable for sewer discharge;
  6. Applies to sewage pond discharge;
  7. Odor barrier.


our service

Pre-Sales Service

  1. According to product¡¯s using condition, technicians will offer rationalization proposals to assist clients to select proper types;
  2. Provide detailed product performance specification;
  3. Provide professional quoted price;
  4. Provide 24-hour technical consulting reply.

In-Sales Service

  1. Begin to supervise from raw material, its qualified rate can reach to 100%;
  2. Whole manufacturing process are in strict accordance with promised procedure requirements, product qualified rate can reach to 100%;
  3. Provide product¡¯s inspection record of key junctures to customers;
  4. Provide production schedule photos to customers at regular intervals;
  5. Package and transport products strictly accordance with export standard.

After-Sales Service

  1. Under the premise of correct installation, normal maintenance and using, we guarantee one-year warranty period;
  2. When warranty period has expired, our sold products enjoys lifetime guarantee repair, we only charge cost price for changing product¡¯s standard component and sealing component;
  3. During installation and adjustment period, our after-sale service staff will communicate with customers frequently to know product¡¯s running state in time. Assist customers to install and adjust products until customers are satisfied;
  4. If product has malfunction during operation period, we¡¯ll offer you satisfied answer in time. We¡¯ll reply you within 1 hour and provide solution or send staff to spot within 24 hours after receiving maintenance notification.
  5. Lifelong free technical support. Conduct satisfaction survey and inquiry equipment running condition to clients by telephone or e-mail semiannually from the first day of equipment running, put on records of acquired information.


  1. Can your clamp Connection rubber check valve connect with ASME pipe?
    Yes, we can make, and customized.
  2. Is your rubber check valve's length and duckbill height adjustable?
    Yes, we can change according to the actual using condition.
  3. What's the largest Diameter?
  4. Besides clamp connection, what else types can you make?
    We can also make flange type, insert type, built-in type, slurry type.
  5. What's your MOQ?
    MOQ is 1 set.

customerspackaging & shipping


  1. Flexible pitch of waves.
  2. Good flexibility, no blocking and stiffness.
  3. Light weight, good consistency.
  4. Good flexibility, bend ability.
  5. Corrosion resistance, high temperature resistance.
  6. Wear resistance, to prevent the internal wires from being worn.
  7. Bending resistance, tensile strength, strong anti side pressure property.
  8. Soft and smooth, easy for installation and positioning.
More products