2.8 A. Preformed pipe Insulation: ASTM C533, Type I and Type II with indicator denoting asbestos-free material. B. Premolded Pipe Fitting Insulation: ASTM C533, Type I and Type II with indicator denoting asbestos-free material. C. Equipment Insulation: ASTM C533, Type I and Type II D. Characteristics: Insulation Characteristics TYPE I TYPE II Temperature, maximum degrees C 649 (1200) 927 (1700) (degrees F) Density (dry), Kg/m3 (lb/ ft3) 232 (14.5) 288 (18) Thermal conductivity: Min W/ m K (Btu in/h ft2 degrees F)@ 0.059 0.078 mean temperature of 93 degrees C (0.41) (0.540) (200 degrees F) Surface burning characteristics: Flame spread Index, Maximum 0 0 Smoke Density index, Maximum 0 0 2.9 INSULATION FACINGS AND JACKETS A. Retarder, higher strength with low water permeance = 0.02 or less perm rating, Beach puncture 50 units for insulation facing on exposed ductwork, casings and equipment, and for pipe insulation jackets. Facings and jackets shall be all service type (ASJ) or PVDC Vapor Retarder jacketing. B. ASJ jacket shall be white kraft bonded to 0.025 mm (1 mil) thick aluminum foil, fiberglass reinforced, with pressure sensitive adhesive closure. Comply with ASTM C1136. Beach puncture 50 units, Suitable for painting without sizing. Jackets shall have minimum 40 mm (1-1/2 inch) lap on longitudinal joints and minimum 75 mm (3 inch) butt strip on end joints. Butt strip material shall be same as the jacket. Lap and butt strips shall be self-sealing type with factory-applied pressure sensitive adhesive.
2.8 A. Preformed pipe Insulation: ASTM C533, Type I and Type II with indicator denoting asbestos-free material. B. Premolded Pipe Fitting Insulation: ASTM C533, Type I and Type II with indicator denoting asbestos-free material. C. Equipment Insulation: ASTM C533, Type I and Type II D. Characteristics: Insulation Characteristics TYPE I TYPE II Temperature, maximum degrees C (degrees F) 649 (1200) 927 (1700) Density (dry), Kg/m3 (lb/ ft3) 232 (14.5) 288 (18) Thermal conductivity: Min W/ m K (Btu in/h ft2 degrees F)@ mean temperature of 93 degrees C (200 degrees F) 0.059 (0.41) 0.078 (0.540) Surface burning characteristics: Flame spread Index, Maximum 0 0 Smoke Density index, Maximum 0 0 2.9 INSULATION FACINGS AND JACKETS A. Retarder, higher strength with low water permeance = 0.02 or less perm rating, Beach puncture 50 units for insulation facing on exposed ductwork, casings and equipment, and for pipe insulation jackets. Facings and jackets shall be all service type (ASJ) or PVDC Vapor Retarder jacketing. B. ASJ jacket shall be white kraft bonded to 0.025 mm (1 mil) thick aluminum foil, fiberglass reinforced, with pressure sensitive adhesive closure. Comply with ASTM C1136. Beach puncture 50 units, Suitable for painting without sizing. Jackets shall have minimum 40 mm (1-1/2 inch) lap on longitudinal joints and minimum 75 mm (3 inch) butt strip on end joints. Butt strip material shall be same as the jacket. Lap and butt strips shall be self-sealing type with factory-applied pressure sensitive adhesive.
VA230711.docx