DN50 PN10 Controlled Back Pressure Flexible Rubber Duckbill Check Valve Is Used In Drainage Systems

Introduction to the rubber duckbill check valve

The duckbill check valve is made of resilient neoprene and artificial fibres, which are specially processed to resemble a duck's beak, hence the name duckbill valve. In the absence of internal pressure, the mouth of the duck closes under the action of elasticity. As the internal pressure increases, the outlet of the duckbill gradually increases and the liquid can be discharged at a high flow rate.

The role of the rubber duckbill check valve

1. Prevent fluid backflow: In applications such as sewage drainage systems, rainwater drainage systems, and underground parking lot drainage systems, rubber duckbill check valves can effectively prevent floods and sewage from backflowing into basements or municipal pipelines to avoid major losses.

2. Odor barrier: The valve has an odor barrier function to prevent the odor diffusion of sewage or odorous fluids.

3. Maintenance-free: Since it has no moving components, it does not need to carry out any maintenance, reducing operating costs.

4. Strong adaptability: It can adapt to different working conditions and material requirements, customize valves with special needs, and have a long life.

5. Prevent clogging: Even in the presence of blockages such as sediment, stones, vegetation, marine life, etc., the rubber duckbill check valve can maintain normal operation and will not close loosely due to foreign objects.

6. Suitable for a variety of environments: Suitable for coastal areas, beaches, docks, reservoirs, municipal flood discharge, sewage and other environmentally friendly green applications, replacing the easy to be blocked door check valve.

7. Prevent backfilling and backflow: In the rainy season or when the water level rises, it can effectively prevent sewage or flood backflow into the street sewer and basement to avoid major losses.

8. Good diffusion performance: The discharged sewage can reach the flow rate required for effective mixing, which is much smaller than the flow rate required for the same mixing of circular pipelines, and has good diffusion performance.

Carefully check the duckbill valve data before leaving the factory:

1. Confirm the duckbill valve specifications

2. Measure the length and width of the duckbill valve; use a caliper to measure the outer diameter, thickness and other data of the duckbill valve flange; ensure that the customer's customized requirements are met

Main connection size

FAQ

Q: How can you guarantee the quality or any warranty?

A: If there is a quality problem during use, all products can be returned according to the consumer's requirements.

Q: Do you provide samples? Is it free or charged?

A: Yes, we can offer sample free but shipping charges covered by customer.

Q: What are our rubber materials?

A: There are natural rubber, butyl rubber, nitrile rubber, EPDM rubber, neoprene, fluorine rubber ,food grade rubber and so on.

Q: What are the standards of your flanges?
A: Our flange standards are DIN, ANSI, BS, ISO, JIS, EN 1092, etc.

Q: Is it possible to customize products of different sizes?

A: Of course, the above specifications are standard specifications, and we can design and manufacture them according to requirements.

Q: Where is your loading port?

A: Shanghai, Qingdao or Tianjin in China.

The company adheres to the business philosophy of "customer satisfaction is our first duty, all employees are responsible for creating quality, continuous improvement sets new heights, honest service builds reputation", and wholeheartedly provides high-quality products and professional services to new and old customers.

The factory mainly produces rubber expansion joints, duckbill check valves, dismantling joint, bellow expansion joints, compensators, repair clamp, 02S404 national standard waterproof casings, gate valves ,butterfly valves etc; and all products have passed ISO 9001:2015 quality management system certification; adopting national and industry standards, advanced manufacturing technology, strong R&D and manufacturing capabilities, they are widely used in water supply, drainage, electricity, chemical industry, gas, metallurgy, urban construction and environmental protection and other pipeline industries.