2.11.1
All piping, fittings, valves, etc., in the valve manholes shall be
insulated. Insulation shall be premolded, precut or job fabricated to fit
and shall be removable and reusable. Thickness of insulation shall be in
accordance with Tables 1 and 2. Insulation jackets shall be provided for
all pipe and fitting insulation. Insulation shall conform to EPA
requirements in accordance with Section 01670 RECYCLED / RECOVERED
MATERIALS.
2.11.2
Insulation
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NOTE: The insulations allowed in this paragraph
have passed a 96 hour boiling test which indicates
that satisfactory performance is expected.
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Insulation for all piping, fittings, and valves shall be molded calcium
silicate conforming to ASTM C 533, Type I, or molded mineral fiber
insulation conforming to ASTM C 547, Class 2, or cellular glass insulation
conforming to ASTM C 552. All insulation shall be asbestos free.
Laminated construction shall not be used unless the thickness exceeds 100
mm 4 inches. Insulations and the manufacturers approved for use are:
a.
Delta, available from Rockwool in Leeds, Alabama.
b. MPT-PC and MPT-PF, available from Mineral Products of Texas in
Houston, TX.
c. Thermo-12, Super Caltemp, available from Johns Manville in
Denver, Colorado.
d. Foamglass (cellular glass), available from Pittsburgh Corning
Corporation.
2.11.3
Aluminum Jackets
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NOTE: Vapor barrier requirements are only to be
included for chilled water systems.
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Aluminum jackets shall be smooth sheet, 0.4064 mm 0.016 inch nominal
thickness and conform to the requirements of ASTM B 209M ASTM B 209, Type
3003, 3105, or 5005.[ Aluminum jackets shall be supplied with a factory
installed moisture barrier. This moisture barrier shall consist of at
least 18.1 kg 40 pound kraft paper coated on one side with a 0.025 mm 1 mil
thick polyethylene film. The moisture barrier shall be adhered to the
aluminum jacket over the entire area of the aluminum jacket insulation-side
surface.]
2.11.4
Bands
Bands for aluminum jacket shall be 10 mm 3/8 inch wide and 32 gauge
thickness made of aluminum or annealed stainless steel. Bands for
insulation shall be 15 mm 1/2 inch wide and 32 gauge thickness made of
annealed stainless steel.
SECTION 02560
Page 16
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