SECTION 15083

POTABLE WATER PIPE INSULATION

PART 1 GENERAL

1.1	SUMMARY

A.	Includes But Not Limited To

1.	Furnish and install insulation on hot and cold water lines, fittings, valves, and accessories as described in Contract Documents.

B.	Related Sections

1.	Section 15143 - Potable Water Piping

PART 2 PRODUCTS

2.1	INSULATION

A.	Above Grade Piping Insulation

1.	One inch thick snap-on glass fiber or Melamine foam pipe insulation.

2.	Heavy density pipe insulation with factory vapor jacket equal to Fiberglas ASJ may be used.

3.	Approved Manufacturers -

a.	Accessible Products Inc - Techlite SSL

b.	Knauf

c.	Manson

d.	Owens-Corning

e.	Johns-Manville

B.	PVC Fitting, Valve, And Accessory Covers For Above Grade Piping

1.	Approved Manufacturers -

a.	Accessible Products Inc - Techlite SSL-ASJ

b.	Knauf

c.	Zeston

C.	Below Grade Piping Insulation

1.	½ inch thick

2.	Approved Manufacturers -

a.	DG Tubolit by Armstrong

b.	ImcoLock or ImcoShield by Imcoa

c.	Therma-Cel by Rubatex

3.	Joint Sealant -

a.	Armstrong 520

b.	Rubatex R-373

PART 3 EXECUTION

3.1	APPLICATION

A.	Above Grade Piping

1.	Apply insulation to clean, dry piping with joints tightly butted.

2.	Adhere 'factory applied vapor barrier jacket lap' smoothly and securely at longitudinal laps with a white vapor barrier adhesive. Adhere 3 inch wide self- sealing butt joint strips over end joints.

3.	Fittings, Valves, And Accessories -

a.	Insulate with same type and thickness of insulation as pipe, with ends of insulation tucked snugly into throat of fitting and edges adjacent to pipe insulation tufted and tucked in.

b.	Cover insulation with one piece fitting cover secured by stapling or taping ends to adjacent pipe covering.

c.	Alternate Method - Insulate fittings, valves, and accessories with one inch of insulating cement and vapor seal with two 1/8 inch wet coats of vapor barrier mastic reinforced with glass fabric extending 2 inches onto adjacent insulation.

4.	Pipe Hangers -

a.	Do not allow pipes to come in contact with hangers.

b.	Provide 16 ga by 6 inch long galvanized shields at each pipe hanger to protect pipe insulation from crushing by clevis hanger.

B.	Below Grade Piping - Slip underground pipe insulation onto pipe and seal butt joints. Where slip-on technique is not possible, slit insulation, apply to pipe, and seal seams and joints.

END OF SECTION