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steel. Gaskets shall be Viton. Cam and groove couplings shall be Dixon Boss-Lock or <br /> equal. <br /> 2.09 PIPING SUPPORTS AND HANGERS <br /> A. General <br /> All piping shall be supported against sag, lateral and vertical movement in a manner <br /> which will prevent undue strain on any valve, fitting, pipe or piece of equipment. Unless <br /> otherwise indicated on the Drawings, exposed piping shall be supported at the base of <br /> all risers, at intervals not to exceed 5 ft on all horizontal runs of pipe 2 in. and smaller, at <br /> intervals not to exceed 8 ft on all horizontal runs of pipe 2'/2 in. through 4 in., and at <br /> intervals not to exceed 12 ft on all horizontal runs of pipe larger than 4 in. <br /> In addition, pipe supports shall be provided at changes in direction or elevation, adjacent <br /> to flexible couplings, at pipe connections to equipment and where otherwise shown. <br /> Piping shall be supported as described hereinafter and as shown by the pipe support <br /> details on the Drawings. Manufacturer's catalog figure numbers are typical of the types <br /> and quality of standard pipe supports and hangers to be employed. Special support and <br /> hanger details are shown to cover typical locations where standard catalog supports are <br /> not applicable. <br /> No attempt has been made to show all required pipe supports in all locations, either on <br /> the Drawings or in the details. The absence of pipe supports and details on any <br /> Drawings shall not relieve the Contractor of the responsibility of providing a satisfactory <br /> piping support system in conformance with the functional and specific support spacing <br /> requirements of these specifications. <br /> B. Hangers and Supports <br /> Pedestal pipe supports shall be adjustable, with stanchion, saddle, and anchoring flange <br /> as shown, Grinnel, Fee, and Mason, or equal. Non-shrink grout shall be used under the <br /> floor flanges to give level bearing, and floor flanges shall be bolted to the floor with two <br /> stainless steel bolts cast in the concrete, if possible, or using stainless steel concrete <br /> anchors. <br /> Any pipe supports and brackets shall be dielectrically isolated from the pipe by insertion <br /> of dielectric insulatirg material between the support and the pipe. <br /> 2.10 TAPS AND FITTINGS FOR INSTRUMENTATION <br /> The Contractor shall provide all taps, fittings, shutoff valves, etc., for instrumentation, flow <br /> control valves and other devices installed in pipelines. <br /> 2.11 PRESSURE TAPS AND GAUGES <br /> Gauge taps shall be provided where shown. Gauge taps shall consist of a 1/2 in gauge cock <br /> attached by threaded nipple to the pipeline, duct or equipment. Gage cocks shall be <br /> Robertshaw 1303, Ashcroft 1095, or equal. The exposed threads of each gage cock shall be <br /> protected by a brass plug. <br /> July 2007 Division III-156 NEI Phase II Water and Sewer <br /> CIP Nos. 7468, 7589, 7590 <br />