duckbill check valve

Duckbill valve
Commonly known as
Rubber blowdown
check valve, also known as blowdown rubber check valve, rubber check valve, rubber
check valve, etc.

Main products
Style
Rubber drain check valve is called duckbill-shaped flexible check valve in Spain and is called duckbill-shaped flexible check valve in the United States. It is a Spanish valve company. Based on the production of American Red Valve Company, we conduct a comprehensive and exemplary revolutionary redesign. We are committed to continuously improving the functions of the rubber sewage check valve duckbill-shaped flexible check valve and improving its performance, so that the strength, toughness and sealing of the valve are greatly improved. The valve does not have any moving components and does not require any maintenance. This valve can be matched with straight flange pipe
cement pipe
glass fiber reinforced plastic pipe. This valve is widely used in coastal beach dock reservoir municipal flood drainage and sewage discharge. It can be said to be an environmentally friendly green valve. This valve replaces the door check The valve completely solves the problem that the door is easily blocked by sediment, silt, rocks, vegetation, and marine life.

Main uses of flange rubber sewage check valve products
Used in waterproof systems, drainage systems, water pump outlets, lifting
Main features of pumping stations and submersible aeration systems The rubber flange is integrated with the valve body, making installation extremely convenient.
The valve body adopts an all-rubber design, which will not cause siltation and things to get stuck, reducing maintenance costs and allowing solid particles to pass smoothly. Valve body manufacturing materials
Neoprene, Hyplon, Buna-N rubber and
Ethylene-propylene rubber and other flange materials
,, etc.
Generally speaking, there are two installation sizes in the country for the size standards of flange duckbill valves. One installation size is connected with the national standard flange. This was done by engineer Li Tongwen when he first designed the duckbill valve. In order to cooperate with the national standard, the flange standard parameters of the duckbill valve with the following diameters were specified. Miscellaneous national standard ten kilogram bolt hole center distance and flange outer diameter, the above pipe diameter includes reference to the national standard kilogram bolt hole center distance and flange outer diameter. Another installation size is the own size represented by Jiangsu Blue Valve and Nanjing Shuimei. This size is different from the national standard, but may be based on American Red Valve or Spanish screws.

Installation method and dimensions
Made of rubber flange, valve body and duckbill, and equipped with
gasketed metal flange, which can be naturally matched with the metal flange Connection, directly installed on tanks, pipes and cofferdams. When installing and connecting, the size of the flange should correspond to the connecting flange to ensure absolute sealing after the connection is tightened. Also, be careful not to damage the flange lip of the rubber drain check valve.