Milwaukee Valve BA-475BLL 1-1/2" FNPT Brass Ball Valve

Valve Purpose & User Fit

The Milwaukee Valve BA-475BLL is a 1-1/2" FNPT brass ball valve built for manual on-off control of water or combustible gases. It suits plumbers, maintenance crews and facility managers who need a reliable inline shut-off for residential or light-commercial piping systems. The full-port design maintains flow without restriction when the valve is open. A locking handle prevents accidental operation during service or safety lock-out procedures.

Upgrade Path & When to Switch

This valve replaces older gate valves, globe valves or non-locking ball valves that leak, seize or lack a positive lock-out feature. The jump is worth it when a system demands full-bore flow, 600 psi pressure rating and a handle that can be padlocked in the open or closed position. It also fits applications requiring vacuum service down to 29.92 in Hg where legacy valves cannot hold a seal. The two-piece brass body simplifies in-line maintenance compared with single-piece designs.

Pre-Order Compatibility Check

Verify that the piping uses 1-1/2" FNPT threads and that the media temperature and chemistry are compatible with brass and chrome-plated brass internals. Confirm the system pressure does not exceed 600 psi and that no steam service is intended, as steam pressure is not rated. Ensure there is enough straight-run clearance to operate the locking handle and that local codes accept a valve without 3-A sanitary certification. Check that the valve orientation matches the straight body style required by the layout.