Back Pressure Check Valves for Flanged Installation A3400L4 and A3400L6


Designed to provide high flow capacity and allow more efficient tank filling than conventional designs. The unobstructed throat area reduces flow turbulence through the valve, thereby reducing pressure drop. Large flow channels and spacious side ports assure ample capacity for the most demanding high capacity filling operations.

The valve is designed for installation in internally threaded flanges in container bottoms.


  • Speeds up filling operations in bulk tanks.
  • All steel and stainless steel construction assures long service life.


Body Cadmium Plated Steel
Stem Stainless Steel
Spring Stainless Steel
Disc Cadmium Plated Steel
Guide Stainless Steel
Roll Pin Stainless Steel