- New
741-387 is a Bismar 1/4" male inverted flare plug designed to close compatible inverted-flare connections. Bismar identifies this fitting as model 148-4 in its brass fitting catalogue. It is intended for applications where a 1/4" male inverted flare plug is required to seal or close a compatible connection. Verify the fitting type and size of the existing system before installation to ensure proper compatibility.