Description Vanes Only for FR4 Vacuum Pump Set of 4 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. Complete Rebuild kit also available separately at link below 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
