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2.18 PRESSURE SUSTAINING VALVES <br />A back pressure valve shall be provided and mounted immediately before the discharge point. The <br />sustaining valve shall be fabricated from PVC or CPVC, match piping, with a Teflon diaphragm seal. The <br />valve shall be manufactured by Prominent, or equal. <br />PART 3 - EXECUTION <br />3.01 EXAMINATION <br />A. Verify that building service connection and municipal utility water main size, location and <br />invert are as indicated. <br />3.02 PREPARATION <br />A. Where applicable, ream pipe and tube ends and remove burrs. <br />B. Remove scale and dirt, on inside and outside, before assembly. <br />C. Prepare pipe connections to equipment with flanges or unions. <br />3.03 PRESSURE TESTING AND DISINFECTION <br />A. Flush, test, and disinfect system in accordance with Section 02670. <br />END OF SECTION <br />(Remainder of Page Intentionally Left Blank) <br />044572017 <br />15100-10 <br />