Duckbill valve, also known as rubber sewage check valve, especially in rainy seasons, the use of duckbill valve can effectively prevent the backflow of floods, sewage, etc., and can also drain water at any time. In addition, it The main function is to prevent the intrusion of seawater and sediment. What else do you know about the duckbill valve? How does the duckbill valve work? What are the advantages and disadvantages of the duckbill valve? I believe many people are not clear. Below Let me introduce to you the relevant situation of duckbill valve in detail, so that you can have a good understanding.
Introduction to duckbill valve
Duckbill valve is commonly known as: rubber sewage check valve, also known as: back pressure flexible check valve, duckbill valve check valve, rubber check valve valve, rubber check valve, rubber slow-closing check valve, etc.
Duckbill valves are divided into socket type, inlaid type, built-in type, flange type, mounting plate type, mortar or cement pipe type according to the installation method.
The main models are: XL-T, XL-F, XL-X. The valve has no moving parts and is maintenance-free. This valve can be matched with straight pipes, flange pipes, cement pipes, and fiberglass pipes. This valve is widely used on coasts, beaches, docks, reservoirs, municipal flood drainage, and sewage discharge. It can be said to be an environmentally friendly green valve. This valve replaces flap doors and gates. , completely solving the problem that the door is easily blocked by sand, silt, stones, vegetation, and marine life.
Function
Rubber duckbill valves can prevent floods and sewage from flowing back into street sewers and basements, avoid major losses, and prevent floods from flowing back into sewage treatment plants and drainage pumping stations when the water level rises. ; Prevents the spread of the odor of sewage or odorous fluids, and can be drained at any time; In rainy seasons, it can prevent urban inland river floods from flowing into the streets from the sewers; The quality is better than that of the slap door, and it overcomes some defects of the slap door such as lax closing.
Advantages
The duckbill valve has low cost. If suitable rubber material is used, its service life will exceed that of metal check valves. It is easy to install, has flexible installation methods, and can be repaired.
(1) Maintain a high jet velocity.
(2) Preventing seawater and sediment intrusion is one of the main functions of the duckbill valve.
(3) It is helpful for flushing the discharge pipe.
(4) Under certain conditions, higher dilution can be obtained.
(5) No corrosion.
Disadvantages
The rubber body is not suitable for long-term open-air operations in the field, and the use of high-quality rubber cannot avoid aging.
(1) Increase the project cost.
(2) Increase the head loss of the diffuser.
The above is the relevant introduction to the duckbill valve. Do you all understand it? In general, the duckbill valve is environmentally friendly, maintenance-free, easy and flexible to install, and it replaces the flap door and gate. , which solves the problem of being easily blocked by sediment, vegetation, organisms, etc., and is widely used, especially on coasts, beaches, docks, sewage equipment, etc. It is a good invention and deserves to be promoted. Of course, everything has its pros and cons, and the duckbill valve also has its shortcomings. As long as we use it properly, it can actually serve us well.
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