Duckbill Valve Products:
    Rubber flexible duckbill valve, also known as check valves, slow closing check valve rubber, sewage rubber valve. XH81, XH81A, XH41, XH41A duckbill-type valve (Spain called "flexible duckbill check valve"; the United States known as the "duckbill valve rubber flat mouth") is a valve company in Spain ROSS, American Red Valve Company production based on the summary, exemplary, revolutionary re-design. We are committed to continuous improvement (duckbill check valve flexible) rubber discharge check valve function, improve performance, so that the valve of the strength, toughness, sealing greatly improved, the valve does not have any active components, the avoidance of maintenance. The valve can give straight pipe, flange pipe, concrete pipe, glass pipe support, the valve is widely used in coastal, beach, docks, reservoirs, municipal drainage, sewage, can be described as environmentally friendly green valve, the valve replacement door check valves, door easily solve the sediment, silt, rocks, vegetation, marine life blocking problems. 

Duckbill valve classification: socket-style duckbill valve, mosaic duckbill valve, duckbill valve flange, install the plate duckbill valve, built-duckbill valve.

Duckbill valve installation: socket-style duckbill valve installed in the drain exit flange duckbill valve installed in the drain outlet end with a flange. Mosaic duckbill valve installed in the middle of the city sewer pipes. Installation plate Duckbill valve installed in the outlet end of the buildings. Built-duckbill valve installed in the city sewer and water system ends. Mortar or cement pipeline duckbill valve installed in the mortar or cement pipe end.  Duckbill valve installation method and size: the rubber flange, made ​​of one body and beak, and the metal flange with a gasket, you can connect with the natural metal flange, directly installed in the tank, pipes and cofferdam on. Installation connection, flange and flange dimensions correspond to the flange with the flange, as the case should be added between the waterproof glue, sealed to ensure absolute connection after fastening, but also be careful not to break something duckbill valve flange lips. Duckbill valve Material: Neoprene, Haipu Long, nitrile rubber and ethylene-propylene rubber.

XH81 type - DN20-2000mm	XH41 type - DN100-2000mm
XH81A type - DN200-1200mm	XH41A type - DN200-600mm

	DN With the pipe diameter Valve port level (A) Pipeline access (B>) 50 2 " 20 20 65 2 "-1 / 2" 25 25 80 3 " 40 40 100 4 " 50 50 150 6 " 50 50 200 8 " 50 50 250 10 " 50 50 300,350 12 "~ 14" 100 100 400,450,500 16 "~ 20" 150 150 600,700,800,900 24 "~ 36" 200 200 1000 40 " 250 250 1200,1400,1600 64 " 300 300 1800 72 " 400 400 Description: DN800 ~ 1800 (32 "~ 72") for the double-clad hoop
Schematic diagram
Use on-site	Installation structure
	Installation Installation location Installation Schematic Socket type Installed in the discharge pipe of the mouth Flange Installed in the discharge pipe with a method of export blue end Mosaic Installed in the City Municipal water pollution in the water pipes between the Installation Plate Installed at the water end of the construction of buildings on Built-in Installed in the City Urban rainwater sewage system, water and effluent ends Mortar or water mud pipeline Installed on the gray cement slurry or the end of the pipe end
Storage and transport precautions: A, XH81, XH41 type of duckbill valves, should be kept in a cool, dry place, and to ensure that state transportation vertical placement; B, set above the ground level floor or stand up; C, the valve doors away from heat, ozone, oil, acid, alkali region;
D, non-light radiation exposure and strong load-bearing; E, non-sharp instruments cut through the surface; F, the box marked "↑", does not allow upside down or flat.

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