XH-41 EPDM Rubber Duckbill Check Valve – Blowdown Type for Industrial Wastewater Discharge

High-quality XH-41 EPDM blowdown rubber duckbill check valve designed for industrial wastewater discharge. Corrosion-resistant, maintenance-free, and ideal for reliable backflow prevention in harsh environments.

How the duckbill valve works

The duckbill valve is made of elastic neoprene and man-made fiber through special processing, and the shape is similar to a duckbill, so it is called a duckbill valve. In the absence of internal pressure, the duckbill outlet closes under its own elastic action; As the internal pressure increases, the duckbill outlet gradually increases, keeping the liquid drained at high flow rates.

Precautions for the installation of duckbill valves

1. Check the condition of the pipeline and valves: Before installation, check whether the outer surface of the pipeline or the connecting flange is smooth and flat, without burrs or deformation.

2. Correctly match the pipes and valves: Ensure that the inner diameter of the duckbill valve is correctly matched with the outer diameter of the connecting pipe, and the insertion depth of the socketed duckbill valve should meet the requirements.

3. Pay attention to the direction of the valve: The installation position of the duckbill valve is not confined to a specific direction, and can usually be installed on the horizontal or vertical pipeline, but special attention should be paid to the flow direction of the medium to ensure that the normal flow direction of the medium is consistent with the direction of the arrow indicated on the valve body.
4. Properly support the heavy valve: For the duckbill valve with a nominal diameter greater than DN800, due to the large weight of the valve body and a large amount of water flow impact in the abdominal cavity of the valve body during work, a bearing rod should be added to lift the valve body firmly through the lifting ring.
5. Follow the installation steps: Choose the right size and material, clean and prepare the pipe, slide the valve into the pipe and make sure it is positioned correctly, the “ duckbill ” is facing the flow direction, add a clamp to secure the valve, and perform a leak test to make sure it is working properly.
6. Pay attention to safety and use environment: When the valve body is stored for a long time, it should be protected from open flames, and it is strictly forbidden to stack it. In use, prevent sharp and hard objects from piercing the valve body. No maintenance is required during normal use, but it is necessary to prevent sharp and hard objects from piercing the valve body.

Table of Materials

Main connection size

Inventory display

FAQ

Q: Can the products be manufactuered by customer's requirement?

A: Yes, the specifications stated above are the standard ones, we can design and manufacture as requirement.

Q: What is Duckbill Check Valve?

A: Duckbill check valves are unique, one-piece, elastomeric components that act as backflow prevention devices or one-way valves or check valves.

Q: Have your products been exported?

A: Yes, they have been exported to USA, France, Bahrain, Australia, Malaysia, Norway, Finland, Peru, Chile, Brazil, Uruguay, Russia, UAE, Saudi Arabia, Oman, Egypt, Serbia, Vietnam, South Korea, Indonisia, India, Thailand, Pakistan, Philippines, Singapore etc.

Q: What are the fields in which duckbill valves are applicable?

A: Coasts, sandy beaches, marinas, reservoirs, etc.

Q: What is the temperature for duckbill valves?

A: -20℃-150℃.

Q: What is the caliber range of a flanged duckbill valve?

A: DN50-DN1600.

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.