2.2
15180-2
PIPE AND EQUIPMENT INSULATION
3. Insulation shall have a maximum thermal conductivity of 0.27 Btu-in./h-ft2-
°F at a 75°F mean temperature when tested in accordance with ASTM C 177
or ASTM C 518, latest revision. Insulation shall have a maximum water vapor
transmission of 0.08 perm-inches when tested in accordance with ASTM E
96, Procedure A, latest revision.
4. Insulation Covering: Field applied PVC jacket with joining surfaces adhered
using PVC solvent weld adhesive.
B. Fiberglass Pipe Insulation:
Mineral fiber thermal insulation.
All service vapor retarder jacket.
Required for use on all pipes as listed in Table 1.
All cold piping shall be sealed to prevent condensation.
Thickness of insulation shall conform to Table 1.
ittings and Valves:
WN AAR WN
Do not insulate unions and flanges.
D. PVC Jacketing
1. For use on straight runs of fiberglass insulated piping in all areas.
E. Staples: Outward clinching type, type 304 or 316 stainless steel.
F. Adhesives:
Pre-molded PVC covers with fiberglass fill on fiberglass insulation systems.
Mineral fiber insert insulation with an aluminum pre-molded fitting cover.
1. Flexible elastomeric insulation: Obtain adhesive from the insulation
manufacturer and apply in strict accordance with manufacturer's instructions
and recommendations.
2. Fiberglass: Non-flammable vapor barrier adhesive as manufactured by
Benjamin Foster or Childers or equal.
APPLICATION THICKNESS TABLES
TABLE | - MINIMUM PIPE INSULATION*
Insulation Thickness in Inches for Pipe Sizes
Fluid Runouts 14" and . 2-1/2" 5 8" and
Temp Up to Less to 4" and Larger
Range, °F | 14" 6"
Heat Systems
Low Pressure Steam 201-250 2% 21% 3 3 3 3%
Steam Condensate Any 1 1 1 1% 1% 2
Hot Water 120-200 1%" 1%" 2 2 2 2
Refrigerant Any 1 1 1% 1% 1% 1%
*Based on minimum thermal resistance ® of 4.0 per inch of thickness on a flat surface at a mean
temperature of 75°F.
PART 3 - EXECUTION
3.1
INSTALLATION
A. Apply insulation only after all pipes have been tested and approved.
B. Clean and dry all surfaces to which insulation is to be applied.
C. Neatly finish the ends of insulation on exposed piping at valves, flanges, etc
., with
13089K
