quick opening device that speeds up the response time of a dry pipe valve
air dryer
equipment used to reduce moisture content in air to reduce corrosion and blockage due to ice plugs
air sampling systems
systems designed to detect fire at its earliest stages by drawing air samples from a network of pipes throughout a building and analyzing them
backfill
earth, soil or gravel (aggregate) used in proper placement to bury underground piping
cathodic protection
a method of corrosion protection for metal used primarily on steel water tanks and underground piping to prevent electrolysis
combined dry pipe/preaction system
dry pipe system that employs a supplemental detection system
cross-connection control assemblies/devices
equipment used to prevent contamination of the water supply
deluge system
a system with open sprinkler heads that relies on detection systems to operate, set up so that when the system is tripped all heads spray simultaneously
dies
equipment used to cut external threads on rod or pipe
dry pipe system
a sprinkler system charged with air or other approved gases, primarily used to prevent freezing in a cold environment
escutcheon (plate)
an aesthetic or cosmetic plate used to cover the annular space around a sprinkler that penetrates a well/ceiling
excess pressure pump
water pump that boosts pressure to prevent false alarms in a wet system
fire pump unit
an assembly of components, including a wat pump, that is used to increase pressure of thew water supply to meet system demand
flushing connection
a connection used to flush water from above and below ground piping and components; for example, at the end of a water main or hydrant
grooving (of pipe)
a process of mechanically joining pipe in which a groove is cut or pressed (rolled) around a pipe to accommodate a coupling
hangers
components installed to allow pipes to be attached overhead or to other support structures
heat-actuated devices (HADs)
a device triggered when a specified temperature or rate of increasing temperature is detected
hybrid fire-extinguishing system
a fire-extinguishing system capable of delivering hybrid media at the specified design rate and proportion
laydown
a pre-determined area where material is stored
markups / as-built drawing
a revised set of drawings submitted by a contractor upon completion of a project that reflect all changes made to the specifications and shop drawings during the construction process
pitch
the slope of a pipe, usually expressed as a ratio of rise (change in elevation) to run (change in distance)
preaction systems
a system that may or may not contain supervisory air or nitrogen that can be operated through detection or sprinkler activation
pressure switch
a device used for sensing or monitoring high or low pressure in piping system
pump room
also called pump house. A designated area or room in a building or outside a building that contains a fire pump and its components
reaming
a process to restore the pipe to its original inside diameter, usually by removing the internal burr formed when the pipe was cut
seismic/sway bracing
pipe restraint system
shop drawings
a drawing or set of drawings produced by the contractor, supplier, manufacturer or subcontractor for the purpose of installing, fabricating and bidding
sleeve
installed before or after concrete or other structural placement to enable pipes to pass from one area of a structure to another
sling
any metal or synthetic flexible device used to cradle or support a load. Slings are attached to the hoist line of the lifting device to complete the lift
sprinkler guards
devices used to protect heads from damage
standpipe system
a system to which firefighting or occupant hoses may be attached
suppression systems
types include wet/dry chemical, gas, clean agent, mist, hybrid
tamper switch
device which monitors the tampering of a device, opening or closing of a valve by sounding a signal in fire alarm panel
thrust block
concrete restraint cast in place at critical point in underground piping installations, in order to prevent hydraulic pressure from moving or separating pipe joints
trim
smaller or auxiliary piping attached to installed devices such as valves and pumps. Often supplied as a “trim package”
underground warning tape
a material placed in a trench to warn excavation crews of the existence of buried utilities
valves
device placed in a pressurized piping system in order to control, restrict, direct or prevent the movement of chemicals, gases, liquids or other substances
water flow alarm switch
a device that senses flow/pressure and initiates water flow alarms