For best performance

ergonomic shape prevents uneven wear

B-3979 and most other manufacturers' similar 12-gal

Application: Fans and Blowers

Parker Mini Ball Valve, Brass, Inline, 3-Piece, Pipe Size 1/4 in, Connection Type FNPT x FNPT - 4F-B6LJ2-BP Bradley - Express Lavatory Sinks For best performanceFeaturing excellent low temperature performance and quick 1 4 turn On Off control, this PARKER mini ball valve has a free floating ball design that helps provide a positive seal and extend seat life. The straight through flow path provides for minimum pressure drop. Packing nut eases inline adjustment. Valve is panel mountable and comes with a tough, fracture resistant nylon handle