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valves in sizes 42" through 54". Valves shall be capable of providing drip-tight shutoff up to the full valve rating with pressure in either direction. H. All valves 8 inches and larger shall be equipped with gear actuators. All gearing shall be enclosed suitable for running in oil with seals provided on all shafts to prevent entry of dirt and water into the actuator. All shaft bearings shall be furnished with permanently lubricated bronze bearing bushings. Actuator shall clearly indicate valve position and an adjustable stop shall be provided. Construction of actuator housing shall be semi-steel. Plug valves installed such that actuators are 6 feet or more above the floor, shall have chainwheels and chains provided. J. Where shown on the Drawings, plug valves shall be installed with extended shafts and actuators. Actuators for extended shafts shall be mounted on floor stands where indicated on the Drawings or shall be removable handwheels where floor stands are not called for. Six inch sleeves shall be provided for extended shafts in all floors; where necessary covers shall be provided. Shafts shall be of adequate strength to operate the valve. Floor stands and covers, where called for shall be cast iron. Floor stands shall be equipped with valve position indicators and a lock for the handwheel. K. All plug valves shall be installed so that the direction of flow through the valve is in accordance with the manufacturer's recommendations. L. Valves and actuators shall be as manufactured by DeZurik. 2.04 FOOT VALVE A. Foot valve for diesel fuel tank shall be cast iron body, single bronze poppet valve with metal to metal seat and have a replaceable screen. Float valves shall be OPW Model 85. Valves shall meet API and ANSI Standards. 2.05 FLEXIBLE COUPLINGS A. Flexible couplings shall be either the split type or the sleeve type as shown on the Drawings. 2.06 UNION A. Unions on ferrous pipe 2 inches in diameter and smaller shall be 150 pounds malleable iron, zinc coated. Unions on water piping 2 1/2 inches in diameter and larger shall be flange pattern, 125 pound class, zinc-coated. Gaskets for flanged unions shall be of the best quality fiber or plastic. Unions shall not be concealed in walls, ceilings or partitions. 2.07 FLANGED COUPLING ADAPTER A. Coupling adapter shall be Smith-Blair Model No. 912. Body and follower flange shall be iron. Bolt circle, size and spacings shall conform to ASA 125 flange. 08/12 151 00-4 11-4179