substitution request - Alliance Construction Solutions

1. Overall thickness: 20 mils.
2. Synthetic adhesive.
3. Water vapor transmission rate.
4. Gallons per 100 square inch: 0.10 or less.
5. Water absorption, percent: 0.02 or less.
6. Prime pipe and fittings with a compatible primer prior to application of tape.
7. Pipe wrapping shall conform to the following schedule:
Project No.: 10145
550 15 th Street Dual Brand Hotel
03/16/2012
Scotchwrap No.
Pipe Size Tape Width Standard Cold
¼ - ¾ inch 1 inch 50 40
1 – 1½ inch 2 or 4 inch 50 40
2 inch and larger 4 inch 50 40
Color backing Black Green
8. During application of wrap, if the ambient temperature is 40°F or less, use only
Scotchwrap No. 40 tape. if ambient temperature is 40°F or more, use only
Scotchwrap No. 50.
C. Flexible Connectors: Corrugated type 304 stainless steel flexible pipe with stainless steel
braid and heavy flexible armor shield.
D. Quick Couplers: One way quick coupler with gas rating in cubic feet per hour equal to
equivalent gas appliance rating.
E. Valve cabinets: For gas safety valves, No. 4 stainless steel finish, fully recessed, Series S
construction, style K stainless steel door with key lock, 4 keys per cabinet, all cabinets
keyed alike.
2.04 VALVES:
1. Modify cabinets for 6”, maximum depth for valve sizes ½” to 1-1/2”, and 8”
maximum depth for valve sizes 2” to 3”. Label cabinet.
A. Special duty valves are specified in this section by their generic name. Refer to Part 3,
"VALVE APPLICATION, 11 for specific uses and applications for valve specified.
B. Gas Cocks 2 Inch and Smaller: 150 psi WOG, bronze body, straightaway pattern, square
head, threaded ends.
C. Gas Cocks 2-1/2 Inch and Larger: MSS SP-78; 175 psi, lubricated plug type, semi-steel
body, single gland, wrench operated, flanged ends.
D. Solenoid Valves: Aluminum body, 120 volts AC, 60 Hz, Class B continuous duty molded
coil; NEMA 4 coil enclosure; electrically opened/electrically closed; dual coils; normally
closed; UL and FM approved and labeled.
E. Gas Line Pressure Regulators: Single stage, steel jacketed, corrosion-resistant gas pressure
regulators; with atmospheric vent, elevation compensator; with threaded ends for 2 inch
and smaller, flanged ends for 2-1/2 inch and larger; for inlet and outlet gas pressures,
specific gravity, and volume flow indicated.
23 1123 - 4 FACILITY NATURAL-GAS PIPING