Milwaukee Valve UPBA475B 3/8" FNPT Brass Ball Valve Inline

Valve type and media

The Milwaukee Valve UPBA475B is a manual two-way ball valve built for water service. Its brass body and chrome-plated brass ball suit residential and light-commercial plumbing where a straight inline shut-off is required. The full-port design maintains flow without restriction. Installers who need a quarter-turn valve for potable or process water will find it appropriate.

Pressure rating and port style

The valve withstands a maximum operating pressure of 600 psi and carries a vacuum service rating of 29.92 in Hg. Full-port construction means the bore matches the 3/8 inch nominal size, so pressure drop stays minimal across the valve. Systems that exceed 600 psi or require a rated steam or combustible-gas pressure cannot use this model.

Locking lever and sustained operation

A locking lever handle secures the valve in the open or closed position, preventing accidental actuation during prolonged service. The two-piece brass body and chrome-plated ball resist wear when the valve remains under pressure for extended periods. Applications needing automated actuation or a steam pressure rating are not served by this design.