the rubber duckbill valve is a revolutionary design for backflow prevention in drain and sewer systems for wastewater and stormwater drainage pioneered by tideflex as an alternative to flap valves for the us epa.
red valve series tf-2 check valve . the tf-2 was the first duckbill check valve introduced by tideflex technologies. the tf-2 was developed based on a united states environmental protection agency (epa) grant in the 1980s to overcome excessive costs in maintenance and replacement of non-performing flapgates.
demonstration of the performance of tideflex duckbill valves when submerged. valve continues to discharge and no backflow experienced. read all about tideflex on our website www.measurit.com
in fact the first check valve that tideflex technologies sold in 1984 (pictured below right) is still in service today. there are over 600000 tideflex check valves currently installed worldwide to solve inflow and intrusion problems. ahead of the curve! the tideflex check valve is a revolutionary design for backflow prevention.
in 1984 the united states environmental protection agency (epa) commissioned red valve to develop and test an alternative to ineffective flapgate valves. as a result the elastomer duckbill tideflex check valve was specifically designed to eliminate operation and maintenance problems associated with flapgate valves - including corrosion
tf2 slip-on tideflex duckbill check valve the tf-2 was the first duckbill check valve introduced by red valve company. the original tideflex design the tf-2 has a flare on the top and bottom of the valve. 100% elastomer construction; will not rust or corrode;
red valve is the largest manufacturer and supplier of pinch and check valves and is the preferred supplier for municipalities and industrial plants worldwide. resources. below you will find more information about red valve and tideflex products. series 37 37g check valve. series 37 check valve cut sheet (pdf 369 kb)