It is a collective name for valves to control single-way flow. The valve is buried in slope and bottom of the channel to control single-way drainage of underground water into channel under the designed waterhead difference. According to its opening way, it can be divided into anti-silting flap-type check valve, anti-silting ball-type check valve, etc.
Scope of application
Taking hard polyamine ethylene and Acrylonitrile-Brtadiene-Styrene (ABS) polyamide (nylon) as raw materials; injection molding;
(1) Main material of anti-silting check valve - Acrylonitrile-Brtadiene-Styrene (ABS) shall meet the requirements specified in the third chapter of GB/T20207.1-2006.
(2) The materials for the rubber seal of check valve movable door shall meet the standard of HG/T3091-2000.
(3) External waterproof rubber seal shall meet the standard of GB/T18173.3-2002.
Product standard GB/T10002.2-2003
Technical Parameters for South-to-North Water Diversion Project Requirements
Application Technology Requirements on Check Valve for Main Channel of South-to-North Water Diversion Middle Route Phase I Project (Revised)
GB8104-87 Testing Method of Flow Control Valves
Specifications and models
Specifications and models cases
JL: the acronyms of “Jianlin”.
F: anti-silting type
110: For connecting pipe with nominal outside diameter of 110mm
5: Anti-silting top cover is 5cm higher than height of concrete surface.