Download 1 - Towson University

SECTION 15400
B.
C.
PLUMBING
Type
1.
Type A: Glass Fiber insulation; ANSI/ASTM C547; ‘k’ value of 0.24 at 75
degrees Fahrenheit; noncombustible
2.
Type B: Cellular glass; ASSI/ASTM C552; maximum water vapor
transmission rating of 0.2 perms; ‘k’ value of 27 at 75 degrees Fahrenheit
3.
Type C: Hydrous calcium silicate; ANSI/ASTM C533; rigid white in
preformed piping sections; asbestos free; ‘k’ value of 0.44 at 300 degrees
Fahrenheit, suitable for 1,200 degrees Fahrenheit operation
4.
Type D: Cellular foam; flexible, plastic; ‘k’ value of 0.27 at 75 degrees
Fahrenheit Armstrong Armaflex 2000 or equal
Jackets
1.
Interior Applications
a.
2.
Vapor Barrier Jackets: Kraft reinforced foil vapor barrier with selfsealing adhesive joints
Exterior
a.
Steel or aluminum jackets
b.
Pitwrap – Heat sealed
END OF SECTION
PLUMBING
15400-8