EPDM rubber anticorrosive carbon steel flange duckbill slow closing check valve

What is a duckbill valve?

1. Duckbill valves are commonly known as: rubber sewage check valve, rubber check valve, etc.
2. The duckbill valve does not have any active components, it is a flexible rubber check valve, which has the function of odor blocking and preventing sewage backflow in sewage drainage system, rainwater drainage system, underground parking lot drainage system, etc., which can prevent flood and sewage backflow into the basement or municipal pipeline.

How the duckbill valve works

1. The liquid passes through the valve, and then the valve is opened.
2. When the flow rate or pressure increases, the opening amplitude of the duckbill valve will increase with it; If the flow of water stops, the anti-water pressure or atmospheric pressure will compress the duckbill valve tightly, preventing the liquid or odor from flowing back.
3. The pressure required for the lifting of the duckbill valve is not very large, and the valve can be opened with a water level difference of 250 Pa inches.

Product Introduction

A duckbill valve is a special valve that is mainly used to control the flow direction of liquids, ensuring that liquids can only flow in one direction and prevent reverse flow.

Such valves are usually made of elastic neoprene and man-made fibers that have been specially processed and resembled a duckbill in shape, hence the name. It is designed and manufactured to follow certain standards to ensure that the quality and performance meet the requirements.

Technical Parameters

Main connection size

FAQ

Q: How many types of duckbill valves are there?

A: There are clamp and flange types.

Q: What are the standards for flanges?

A: The standards of flanges are DIN, ANSI, JIS, etc.

Q: Can the length of the duckbill valve be customized?

A: Of course, we have a lot of molds with different specifications and models, which can be customized according to your length.

Q: What are your payment terms?

A: T/T (30% as desposit, the rest 70% will be paid before delivery), L/C at sight.

Q: How much pressure can your products withstand?
A: The pressure that our products can withstand is 1.0-2.5Mpa.

Q: Are you trading company or manufacturer?

A: We are a manufacturer of duckbill valves, rubber expansion joint, bellows expansion joint, flexible metal hoses, dismantling joints, flange adapters and flanges with more than 20 years of experience.