TJM
Senior Member
I am rebuilding my waste / sanitation plumbing system and all of the check valves that I see at WM / Defender are not full flow "flapper type".
The moving parts restrict the cross sectional area and I am concerned about efficiency. Am I over thinking this from an Engineers perspective ?
The moving parts restrict the cross sectional area and I am concerned about efficiency. Am I over thinking this from an Engineers perspective ?