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Gasket shall be Smith-Blair Grade 30 or 60. 0-Ring shall be grade 60. Cross and tee bolts shall conform to ANSI A21.11. 2.08 LINK SEAL & WALL SLEEVE A. The pipe to wall penetration closures shall be "Link-Seal" as manufactured by Thunderline Corp., Belleville, MI 48111. Seals shall be modular mechanical type, consisting of interlocking synthetic rubber links shaped to continuously fill the annular space between the pipe and wall opening. Links shall be loosely assembled with bolts to form a continuous rubber belt around the pipe with a pressure plate under each bolt head and nut. After the seal assembly is positioned in the wall sleeve, tightening of the bolts shall cause the rubber sealing elements to expand and provide an absolutely water-tight seal between the pipe and wall opening. The seal shall be constructed so as to provide electrical insulation between the pipe and wall, thus reducing chances of cathodic reaction between these two members. B. Contractor shall determine the required inside diameter of each individual wall sleeve before ordering, fabricating or installing. The inside diameter of each wall sleeve shall be sized as recommended by the manufacturer to fit the pipe and Link-Seal to assure a water-tight joint. C. Wall sleeve shall be specially designed to mate with the Link-Seal. the wall sleeve shall be heavy wall welded or seamless steel pipe. The sleeve shall have a full circle continuously welded water stop plate on the sleeve O.D. which acts as the sleeve anchor and water stop. Wall sleeve shall be model WS by Thunderline Corp. 2.09 RESILIENT SEAT BALL VALVE A. Ball valve shall be tight closing, shaft-mounted that complies with Fed. Spec. WW-V-35, Type II, Class C, Style.3. Valve design shall eliminate metal to metal contact or wedging in the sealing action. Design pressure rating shall be greater than 150 psi. B. Valve body shall be one or two piece stainless steel ASTM A351. Ball shall be stainless steel ASTM A276. Seat ring shall be reinforced TFE. C. Valve shall have a stainless steel 1/4 turn lever arm. Ends shall be threaded. Ball valve shall be Figure No. T-580-S6-R-66 as manufactured by Nibco, Inc. or equal. 2.10 PRESSURE REDUCING VALVE A. Valve shall be forged brass or cast iron body fully bronze mounted, direct acting, bronze internal trim, reinforced neoprene diaphragm. Valves shall have an inlet side pressure gauge connection and adjusting screw or "T handle. B. Valve sizes smaller than 1/2 inches shall have screwed ends; those 2 inches or larger, flanged ends and those in between these sizes shall have union ends. 08/12 15100-5 11-4179