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INDIAN RIVER COUNTY JULY 25, 2014 <br />INTERGENERATIONAL RECREATION CENTER 100% CONSTRUCTION DOCUMENTS <br />PART 3 - EXECUTION <br />3.1 EXAMINATION <br />A. Examine valve interior for cleanliness, freedom from foreign matter, and corrosion. Remove <br />special packing materials, such as blocks, used to prevent disc movement during shipping and <br />handling. <br />B. Operate valves in positions from fully open to fully closed. Examine guides and seats made <br />accessible by such operations. <br />C. Examine threads on valve and mating pipe for form and cleanliness. <br />D. Examine mating flange faces for conditions that might cause leakage. Check bolting for proper <br />size, length, and material. Verify that gasket is of proper size, that its material composition is <br />suitable for service, and that it is free from defects and damage. <br />E. Do not attempt to repair defective valves; replace with new valves. <br />3.2 VALVE INSTALLATION <br />A. Install valves with unions or flanges at each piece of equipment arranged to allow service, <br />maintenance, and equipment removal without system shutdown. <br />B. Locate valves for easy access and provide separate support where necessary. <br />C. Install valves in horizontal piping with stem at or above center of pipe. <br />D. Install valves in position to allow full stem movement. <br />E. Install check valves for proper direction of flow and as follows: <br />1. Swing Check Valves: In horizontal position with hinge pin level. <br />2. Lift Check Valves: With stem upright and plumb. <br />3.3 ADJUSTING <br />A. Adjust or replace valve packing after piping systems have been tested and put into service but <br />before final adjusting and balancing. Replace valves if persistent leaking occurs. <br />3.4 GENERAL REQUIREMENTS FOR VALVE APPLICATIONS <br />A. If valve applications are not indicated, use the following: <br />1. Shutoff Service: Ball or gate valves. <br />2. Pump -Discharge Check Valves: <br />a. NPS 2 and Smaller: Bronze swing check valves with bronze or nonmetallic disc. <br />GENERAL -DUTY VALVES FOR PLUMBING PIPING 220523 <br />