nickel bronze cover secured to plug or cover frame and set flush with the
finished floor. Heads of fastening screws shall not project above the
cover surface. Where cleanouts are provided with adjustable heads, the
head cleanouts shall be provided with adjustable cast iron or plastic heads.
3.14
VALVES, OUTLETS, AND DISPENSERS
3.14.1
Thermostatic Mixing Valve and Cabinet
The assembly, when not installed in a cabinet, shall be mounted 1.372
meters 4 feet 6 inches above the floor. When a cabinet is used, bottom of
cabinet shall be set approximately 1.2 meters 4 feet above finished floor.
Cabinet doors shall not offer any obstruction when opened. Anchors shall
be provided for fastening cabinet in place. Valves located in pipe
corridors for tempering water for neuropsychiatric patient showers shall
have a maximum outlet temperature of 48 degrees C 118 degrees F, and valves
for neuropsychiatric patient lavatories shall have a maximum outlet
temperature of 41 degrees C 105 degrees F.
3.14.2
Medical Gas and Vacuum Station Outlets
Medical gas and vacuum outlets shall be as specified for surgical
dispensers for medical gas and vacuum systems. Valves shall be as
recommended for the intended service by the valve manufacturer. Bracket
shall be designed to accommodate a 1.91 liter 2 quart capacity bottle
equipped with float cutoff. The bracket shall be installed at the left of
each station outlet. Vacuum station outlets not capable of supporting a
1.91 liter 2 quart capacity bottle equipped with float cutoff shall have a
slide bracket installed adjacent to each station outlet. Brackets shall be
made of aluminum in accordance with ISS PB-224, Series 300 polished
corrosion-resisting steel.
3.14.3
Nitrous Oxide, Oxygen, and Nitrogen Systems
Manifold shall be overhead type mounted on an I-beam or bolted to the wall.
A check valve shall be provided between each cylinder head and the
manifold header. Each header shall be connected to the manifold controls
with shutoff valves. The relief valve shall be vented to the outside
atmosphere if the total capacity of the system is more than 57 cubic meters
2,000 cubic feet of gas. Venting shall be accomplished by piping the
relief valve to the outside atmosphere or by approved ductwork having a
minimum opening of 0.047 square meters 72 square inches. The manifold
shall be installed according to the manufacturer's recommendation and as
required by NFPA 99.
3.14.4
Surgical Dispensers for Medical Gas and Vacuum Systems
3.14.4.1
Automatic Valves
Automatic valves shall be easily accessible for servicing and replacement,
and locations shall facilitate line blowout, purging, and testing. The
Contractor shall test the systems to assure that proper flows and purity of
gases or vacuums can be obtained at each outlet. Unit shall be provided
with a capped stub length of 6 or 10 mm 1/4 or 3/8 inch OD tubing, at least
150 mm 6 inches long, for connection to supply.
3.14.4.2
Wall Outlets
Wall outlets shall be located 1.5 meters 60 inches from finished floor or
SECTION 15405A
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