Readers offer tips about reliable alternatives to conventional check valves. Suggestions include using a fluidic check valve, switching to a U-trap, using a standpipes putting two check valves in the series and changing position relative to the ground.
Anywhere compressed air can be eliminated represents an opportunity to reduce system operating expenses. Often, this reduction means fewer compressors must operate to meet the plant's air requirements.
Christopher Schmidt, Mark D'Antonio and Alan MacDougall