PIPE AND FITTINGS - 13961N0011

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NOTE: When a single total flooding underfloor

supply is to protect more than one underfloor zone,

clearly indicate the requirements on the drawings.

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Supply shall include high-pressure storage cylinders, racks, manifolds,

beam scales, and associated equipment. Supply shall consist of carbon

dioxide in [_____] [34 kg] [75 pound] cylinders. Arrange the first [_____]

cylinders for discharge upon activation of the main control, and the

remaining [_____] cylinders for discharge upon activation of the reserve

control.

2.3

PIPE AND FITTINGS

2.3.1

Pipe

Threaded end connections, Schedule 80 or Weight Class XS (Extra Strong),

except that sizes smaller than one inch may be Schedule 40 or Weight Class

STD (Standard).

a.

ASTM A 53, Type E (electric-resistance welded, Grade A or Grade B)

or Type S (seamless, Grade A or Grade B).

b.

ASTM A 106, Grade A or Grade B.

2.3.2

Threaded Fittings

ASME B16.11, except sizes 50 mm 2 inches and smaller may conform to ASME

B16.3, Class 300.

2.3.3

Unions

ASME B16.39, Class 300.

2.4

PIPING ACCESSORIES

2.4.1

Escutcheon Plates

Provide split hinge metal plates for piping entering floors, walls, and

ceilings in exposed spaces. Provide polished stainless steel plates or

chromium plated finish on copper alloy plates in finished spaces. Provide

paint finish on metal plates in unfinished spaces.

2.4.2

Pipe Sleeves

Provide where piping passes entirely through walls, ceilings, roofs, and

floors. Provide sleeves of sufficient length to pass through entire

thickness of walls, ceilings, roofs, and floors. Provide 25 mm one inch

minimum clearance between exterior of piping and interior of sleeve or

core-drilled hole. Firmly pack space with mineral wool insulation and seal

both ends of sleeve or core-drilled hole with plastic waterproof cement

which will dry to a firm but pliable mass, or provide mechanically

adjustable segmented elastomeric seal. In fire walls and fire floors, seal

both ends of sleeves or core-drilled holes with UL listed fill, void, or

cavity material.

SECTION 13961N

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