Description Kit to Rebuild FR4 Includes; 4 Vanes 2 bearings 2 seals For larger body FR4 vacuum pumps used in dairy barns and milking systems. Originally sold by Strangko and Bou-Matic Pump body is approx 12 inches long. Vane Dimensions; 11 inches long 1.75 inch width Double check model prior to ordering Complete rebuild kit includes 4 high quality long life Kevlar vanes, 2 bearings and 2 shaft seals. Set of vanes also available separately - search 21990 Note that vanes should be rectangle shape. if one side is worn more than the other, you should change them immediately. If a vane breaks, it can destroy one of these pumps FR4 Vacuum pump specs (5 HP) - 48 CFM - 1500 RPM - 7.25 inch pump pulley - 6.25 inch Motor pulley - 5 hp motor 5 hp motor available at link below Repair parts are not made or sold by Bou-Matic®. They are quality aftermarket parts sold satisfaction guaranteed. 1/26
