Roto-Disc Roto Disc Valve Proposal: RD-7532-Q1-4X6 4X6" Roto Disc Shperical, Industrial Valve 4 3/8" Inlet, 6 1/8" Outlet 6" ANSI 150# Flange Bolting Dimension, Top & Bottom Hard 4140 Carbon Steel Dome, Aluminum Body Direct-Drive Design (No Taper/Shear Pins) G Log in for pricing