System S-12/S-13
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, Automatic Standpipe System - ANS A standpipe system that is attached to a water supply
capable of supplying the system demand at all times and that requires no action other than
opening a hose valve to provide water at hose connections.
A
Churning - ANS A condition in a centrifugal in which the impeller is rotating, but no water is
being discharged.
R
Combination Standpipe and Sprinkler System - ANS A system where the water piping
service both 2 1/2in (65) outlet for fire Department use and oulet for automatic sprinkler
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Concealed Sprinkler - ANS
Deluge Valve - ANS
A recessed sprinkler with a cover plate
water supply control valve intended to be operated by actuation of an
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automatic detection system that is installed in the same area as the discharge devices. Suitable
for HAZARDOUS OCCUPANCIES. INTENDED USE IS MANUAL AND AUTO
Deludge Sprinkler System - ANS A sprinkler system employing open sprinklers that are
attached to a piping system that is connected to a water supply through a VALVE that is opened
of a DETECTION SYSTEM installed in the same area as the sprinklers
C
Dry Pipe Sprinkler System - ANS A sprinkler system employing automatic sprinklers that
are attached to a piping system containing air or nitrogen under pressure. The release of the air
or nitrogen,(as from the opening of a sprinkler) results in the water pressure opening a valve
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known as a dry pipe valve, resulting in the flow of water into the piping system and out of the
fused sprinklers heads.
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Dry Sprinkler - ANS A sprinkler secured in an extension nipple that has a seal at the inlet to
prevent water from entering the nipple until the sprinkler operates. May be configured with an
upright, pendent or sidewall sprinkler. AUTO/NON_AUTO
Dry Standpipe - ANS A standpipe system designed to have piping contain water only when
the system is being utilized (NO AUTOMATIC WATER SUPPLY)
Fire Department Connection - ANS A connection, normally on the exterior of the building.
(FORMERLY KNOW AS SIAMESE CONNECTION)