piping shall be brass. Such piping shall include provision for installing
an alarm pressure switch in a non-interruptible arrangement whereby
shutting off of other alarm devices will not shutoff the switch in the
non-interruptible location.
2.9
AUTOMATIC WATER CONTROL VALVE ASSEMBLY (DELUGE VALVE)
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NOTE: The term "automatic water control valve" is
found in the FM Approval Guide and is synonymous
with "special system water control valves" found in
the UL Fire Prot Dir. This term is used for
"deluge," "preaction" and "flow control" valves.
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Water control valve shall be an electrically-actuated type rated for a
maximum working pressure of [1207 kPa 175 psi] [1724 kPa 250 psi]. The
control valve shall be resettable without opening the valve and without the
use of special tools. Electrical solenoid valve used to actuate the water
control valve shall be an integral component of the valve or shall be
approved for use by the water control valve manufacturer and the control
panel manufacturer. Solenoid valve shall be of the normally closed,
de-energized type which opens when energized upon receipt of an electrical
signal from the control panel to which it is connected. Solenoid valves
used with diaphragm-type valves shall be rated for a maximum pressure equal
to that of the associated valve. Water control valve shall be equipped
with a means to prevent the valve from returning to the closed position
until being manually reset. Assembly shall be complete with the valve
manufacturer's standard trim piping, drain and test valves, pressure
gauges, and other required appurtenances. Each assembly shall include an
emergency release device for manually tripping the water control valve in
the event of a power or other system failure. Device shall be a standard
accessory component of the valve manufacturer and shall be labeled as to
its function and method of operation. Valves located in hazardous
locations shall be approved for the hazard classification of the area where
located.
2.10
MECHANICAL ALARM DEVICE
Device shall be water-powered and shall include a body housing, impeller
wheel, drive shaft, striker assembly, gong, wall plate and related
components necessary for complete operation. Minimum 20 mm 3/4 inch piping
shall be provided between the housing and the alarm line trim. Drain
piping from the body housing shall be minimum 25 mm 1 inch steel and shall
be arranged to drain to the outside of the building. Piping shall be
galvanized both on the inside and on the outside surfaces.
2.11
FIRE DEPARTMENT CONNECTION
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NOTE: Verify the type of threads used by the local
fire department.
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Connection shall be [projecting] [flush] type with cast brass body, a
[polished brass] [chromium plated] finish, and matching wall escutcheon
lettered "Auto Spkr". The connection shall have two inlets with individual
self-closing clappers, caps with drip drains, and chains. Female inlets
shall have 65 mm 2-1/2 inch diameter American National Fire Hose Connection
SECTION 13955A
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