www.pmmag.com/articles/89126-danfoss-check-valves
Danfoss Check Valves
January 1, 2004

Danfoss Flomatic Corp. introduces a new 2-inch model 80DICL Ductile Iron Check Valve and model 80S6CL Stainless Steel Check Valve. They have a patented groove-lock-type pipe connection called Certa-Lokā¢, which makes it easier to connect the pipe and eliminates extra fittings. They are specifically designed for use with submersible pumps.
Circle 24