6606 STADIUM DR (2) - Laserfiche WebLink

Browse Search

� � MECHANICAL SYSTEM INSULATION � I SECTION 15250 � I � i � i 3. Insulation applied to cold piping or equipment shall be completely vapor sealed, free � � of pin holes or other openings. � , i 4. Do not use wet insulation materials. i� ij 5. All longitudinal joints on vertical pipe runs shall be staggered. ,I I � �I � � 6. Apply insulation so as to permit expansion or contraction of pipe lines without causing �I � I damage to insulation or surFace finish. ,� i � � ' � 7. Do not a I mastic or adhesive until all ; I pp y previous applications of mastic and � adhesives have thoroughly dried. i ! I � II 8.. No bands or staples shall be provided on covering. � � � � � i 9• The adhesive used in connection with all covering work shall contain an approved � vermin and rodent-proof ingredient. I10. Provide 24 gauge sheetmetal saddle between the pipe hanger/support and the 'I j exterior of the insulation. Saddle length shall be the same as insulation inserts. I � �j C. Application at Fittings � � I � 1. Insulation of flanges and flanged fittings shall overlap adjacent pipe covering at least �I � 1 inch. Valves shall be insulated up to the gland only. '� I I I 2. Pipe line strainers shall be insulated in such a manner as to permit removal of strainer I ! basket without disturbing insulation of the strainer body. � ' � i i � 3. Insulation adjacent to uninsulated flanges shall be tapered back and neatly finished I � ! so as to allow access to and removal of bolts without injury to covering. � i � 3.3 �TYPE A INSULATION INSTALLATION � i ' �A. Tightly butt together sections of insulation on pipe runs sealing longitudinal seams of jacket � � with vapor barrier adhesive. Seal end joints with 4 inch wide straps of vapor barrier tape. � � Seal off ends of insulation with vapor seal mastic at valves, fittings and flanges. No further � � finish required. � ; � i6. PVC fitting jackets shall be used when they are available for the particular application. i i When molded coverings are not available, the coverings shall be fabricated in the field � � � similar to equipment insulation. I � ; j C. Cold Piping � I � �I � ' 1. Cover valves, fittings and flanges with insulation having the same thickness as i adjacent pipe covering, securing in place with copper wire loops, twisting ends and � embedding in insulation. Apply a PVC jacket and finish joints with a 1/16 inch thick � seal coat of vapor seal mastic. Apply a pressure sensitive vapor barrier tape over the joint jacket. j (97008-040497) 15250-7 i � �I I 'I I � ;'