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INDIAN RIVER COUNTY JULY 25, 2014
<br />INTERGENERATIONAL RECREATION CENTER 100% CONSTRUCTION DOCUMENTS
<br />3.5 GENERAL PIPE INSULATION INSTALLATION
<br />A. Requirements in this article generally apply to all insulation materials except where more
<br />specific requirements are specified in various pipe insulation material installation articles.
<br />Insulation Installation on Fittings, Valves, Strainers, Flanges, and Unions:
<br />1. Install insulation over fittings, valves, strainers, flanges, unions, and other specialties with
<br />continuous thermal and vapor -retarder integrity, unless otherwise indicated.
<br />2. Insulate pipe elbows using preformed fitting insulation or mitered fittings made from same
<br />material and density as adjacent pipe insulation. Each piece shall be butted tightly
<br />against adjoining piece and bonded with adhesive. Fill joints, seams, voids, and irregular
<br />surfaces with insulating cement finished to a smooth, hard, and uniform contour that is
<br />uniform with adjoining pipe insulation.
<br />3. Insulate tee fittings with preformed fitting insulation or sectional pipe insulation of same
<br />material and thickness as used for adjacent pipe. Cut sectional pipe insulation to fit. Butt
<br />each section closely to the next and hold in place with tie wire. Bond pieces with
<br />adhesive.
<br />4. Insulate valves using preformed fitting insulation or sectional pipe insulation of same
<br />material, density, and thickness as used for adjacent pipe. Overlap adjoining pipe
<br />insulation by not less than two times the thickness of pipe insulation, or one pipe
<br />diameter, whichever is thicker. For valves, insulate up to and including the bonnets,
<br />valve stuffing -box studs, bolts, and nuts. Fill joints, seams, and irregular surfaces with
<br />insulating cement.
<br />5. Insulate strainers using preformed fitting insulation or sectional pipe insulation of same
<br />material, density, and thickness as used for adjacent pipe. Overlap adjoining pipe
<br />insulation by not less than two times the thickness of pipe insulation, or one pipe
<br />diameter, whichever is thicker. Fill joints, seams, and irregular surfaces with insulating
<br />cement. Insulate strainers so strainer basket flange or plug can be easily removed and
<br />replaced without damaging the insulation and jacket. Provide a removable reusable
<br />insulation cover. For below ambient services, provide a design that maintains vapor
<br />barrier.
<br />6. Insulate flanges and unions using a section of oversized preformed pipe insulation.
<br />Overlap adjoining pipe insulation by not less than two times the thickness of pipe
<br />insulation, or one pipe diameter, whichever is thicker.
<br />7. Cover segmented insulated surfaces with a layer of finishing cement and coat with a
<br />mastic. Install vapor -barrier mastic for below ambient services and a breather mastic for
<br />above ambient services. Reinforce the mastic with fabric -reinforcing mesh. Trowel the
<br />mastic to a smooth and well -shaped contour.
<br />8. For services not specified to receive a field -applied jacket except for flexible elastomeric
<br />install fitted PVC cover over elbows, tees, strainers, valves, flanges, and unions.
<br />Terminate ends with PVC end caps. Tape PVC covers to adjoining insulation facing
<br />using PVC tape.
<br />9. Stencil or label the outside insulation jacket of each union with the word "UNION." Match
<br />size and color of pipe labels.
<br />C. Insulate instrument connections for thermometers, pressure gages, pressure temperature taps,
<br />test connections, flow meters, sensors, switches, and transmitters on insulated pipes, vessels,
<br />and equipment. Shape insulation at these connections by tapering it to and around the
<br />connection with insulating cement and finish with finishing cement, mastic, and flashing sealant.
<br />3.6 FLEXIBLE ELASTOMERIC INSULATION INSTALLATION
<br />A. Seal longitudinal seams and end joints with manufacturer's recommended adhesive to eliminate
<br />openings in insulation that allow passage of air to surface being insulated.
<br />PLUMBING INSULATION 220700 - 8
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