NFPA 25 Nicet test 1 (2022/2023) (Rated A+)

NFPA 25 Nicet test 1 (2022/2023) (Rated A+) Control valve A valve controlling flow to water based fire protection systems Deluge valve A water supply control valve intended to be operated by actuation of an automatic detection system. That is installed in the same area as discharged devices Hose valve The valve to an individual hose connection Pressure control valve A pilot-operated pressure reducing valve designed for the purpose of reducing the downstream water pressure to a specific valve under both flowing( residential) and non flowing(static) conditions Master pressure reducing valve A pressure reducing valve installed to regulate pressures in an entire fire protection system and stand pipe system zone relief valve A device that allows the diversion of liquid to limit excess pressure in a system circulation relief valve A valve used to cool a pump by discharging a small quantity of water. This valve is separate from and independent of the main relief valve. Combined standpipe and sprinkler system A system where the water piping services both 2 1/2 in. Outlets for fire department use outlets for automatic sprinklers Private fire service main Private fire service main, as used in this standard is that pipe and it's appurtenances 1. between a source of water and the base of the system riser for water based fire protection systems 2. Between sources of water and inlets to foam making systems 3. Between a source of water base elbow of private hydrants or monitor nozzles and (4) used as fire pump suction and discharged piping (5) beginning at the inlet side of the check valve on a gravity or pressure tank Fire pump A pump that is a provider of liquid flow and pressure dedicated to fire protection Sprinkler system A system that consists of an intergrated network of piping Antifreeze Sprinkler System A wet pipe sprinkler system employing automatic sprinklers that are attached to a piping system that contains an antifreeze solution and is connected to a water supply. The antifreeze solution is discharged, followed by water, immediately upon operation of sprinklers opened by heat from a fire. Premixed Antifreeze Solution A mixture of an antifreeze material with water that is prepared and factory mixed by manufacture with quality control procedure in place that ensures that the antifreeze solution remains homogeneous and that the concentration is as specified Deluge Sprinkler System 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 by the operation of a detection system installed in the same areas as the sprinklers. When this valve opens, water flows into the piping system and discharges from all sprinklers attached. Dry pipe system A sprinkler system employing automatic sprinklers that are attached to a piping system containing air and nitrogen under pressure, the release of which permits the water pressure to open a valve known as a dry pipe valve and the water then flows into the piping system and out the opened sprinklers Marine system A sprinkler system installed on a ship, boat or other floating structure that takes its supply from the water which the vessel floats Preaction sprinkler system A sprinkler system employing automatic sprinklers that are attached to a piping system that contains air that might or might not be under pressure, with a supplemental detection system installed in the same areas as the sprinklers Wet pipe sprinkler system A sprinkler system employing automatic sprinklers attached to piping system containing water and connected to a water supply so that water discharged immediately from sprinklers opened by heat from fire Water most system A distribution system connected to a water system or water and atomizing media supplies that is equipped with one or more nozzles capable of delivering water mist intended to control, suppress or extinguish fires and that has been demonstrated to meet the performance requirements of its listing and standard Water spray system An automatic or manually actuated fixed pipe system connected to water supply and equipped with water spray nozzles designed to provide a specific water discharge and distribution over the protected are anticipated Water tank a tank supplying water for water based fire protection systems