Sprinkler Fitter Pro Practice Test

These questions are part of the practice quiz. Start practicing

• CPVC is the abbreviation for ____________
• When performing hydraulic calculations, the fire is assumed to start in how many locations?
• Which NFPA standard details the installation of standpipes when they are required?
• In areas with seismic activity, the tops of risers exceeding 3'-0" in length shall be provided with which brace?
• Which components are included in the five-year internal inspection requirement for system valves?
• Which NFPA standard defines the occupant escape time objective associated with 13R?
• The total shut-off head shall not exceed ______ of the total rated head on vertical turbine pumps.
• Pumps shall furnish not less than 65 percent of the total rated head. Which option represents the correct percentage?
• Hangers shall be designated to support the weight of water-filled pipe plus how many pounds at each point of piping support?
• Water storage tank level indicators shall be tested for accuracy and freedom of movement every how many years?
• The rated psi of a fire pump is found on which part of the equipment?
• What is the maximum pipe size (in inches) below which diameter must be non-corrosive?
• Post indicator valves must be set so the top of the post is within which range of inches above final grade?
• Within a standard maintenance program, how frequently should a foam system discharge test be conducted?
• Which option lists water metering devices used for flow testing?
• Which term describes a sprinkler system where cross mains run parallel and are interconnected by multiple branch lines?
• Which NFPA standard requires that circulating closed-loop sprinkler systems be inspected, tested, and maintained?
• In a dry pipe system, during testing, the quick opening device must be in what state?
• A full-flow test on a master pressure regulating device shall be conducted _____ on each valve and compared to previous test results.
• According to NFPA 20, a suction pressure regulating valve is installed according to manufacturer's recommendations and in the piping between the _______
• To prevent jamming, post indicator and OS&Y valve, from the fully open position, shall be backed off by how much?
• Opening a post indicator valve until tension is felt is primarily to verify what?
• What is the minimum clearance, in inches, required between any part of the cabinet and the valve handle after the valve is positioned from fully open to close?
• All sprinkler pressure-reducing valves shall be inspected quarterly to verify they are in the following condition, except which one?
• During hydrostatic testing of a dry pipe system, what must be done with the dry-pipe valve clapper?
• The hydraulic design sign shall be inspected ______ to verify that it is provided, attached securely to the rider and legible.
• Which statement about equipment approved for fire sprinkler installation is true?
• In seismic zones, the brace for risers longer than 3 feet is a which type?
• Which ceiling type is described as not being obstructed construction?
• Equipment approved for fire sprinkler installation must be _______.
• Friction loss is always expressed in which unit?
• What percentage deviation from recorded foam acceptance test specifications requires immediate discussion with the foam manufacturer?
• Screens on suction intakes must be inspected periodically for what reason?
• The minimum temperature for a water storage tank shall not be less than how many degrees Fahrenheit?
• The top of a post indicator valve must be located above final grade within which inches range?
• Cranking voltage on a diesel fire pump system must be inspected weekly and verified that the cracking voltage exceeds ______ volts on a 12 volt system
• A standpipe with a 2 1/2 pressure regulating valve shall be equipped with a ________ minimum drain riser.
• Foam water solution shall be tested every:
• Quick opening devices, if provided, shall be tested how often without flooding the system?
• If a sprinkler is located within a 7'-0" radius and 2'-0" above a unit heater, what rating must the sprinkler have?
• Who must approve the system, method, or device for its intended purpose in NFPA 20?
• What percentage of rated head is the maximum allowed for a pump shut-off?
• Hangers shall be designated to support how many times the weight of water filled pipe?
• Which system type will not provide adequate protection for stockpiles of contents with moderate release rates when stockpiles are 10 inches high?
• Hydrostatic tests of not less than 200 PSI for 2 hours or 50 PSI in excess of the maximum pressure, shall be conducted every 5 years on which systems including the FDC?
• Friction loss is always expressed in which unit?
• The use of reconditioned valves and devices as replacement equipment in existing systems shall be
• During inspection of main relief valves and circulation relief valves, damaged or missing components shall be repaired or replaced in accordance with whose instructions?
• Which ceiling type is not considered obstructed construction?
• The minimum temperature for a fire pump room must be above which value in °F?
• According to NFPA 20, what is the minimum number of water tanks required as the primary source in a very tall building?
• AHJ stands for what in the NFPA 20 context?
• A new dry system should be tested for how long and at what pressure?
• Which K-factor value is acceptable for sprinkler nozzles in commercial cooking equipment ducts?
• The means to fill a steel tank shall be sized to fill within how many hours?
• A white-painted sprinkler indicates which temperature rating?
• During air leakage tests of pre-action systems at 40 psi, allowable loss is up to how many psi?
• Compared to steel pipe, CPVC has what level of hydraulic friction?
• Foam concentrate strainers inspection schedule?
• Low air pressure alarms, if provided, shall be tested at what interval in accordance with the manufacturer's instructions?
• Equipment approved for fire sprinkler installation must be ________.
• What term describes a building system designed using calculated hydraulics rather than standard pipe schedules?
• The standpipe system demand shall be based on the design criteria in effect at the same time of __________
• Which building type is exempt from requiring a fire department connection under NFPA 13?
• Which sprinkler system type uses open sprinklers that discharge water simultaneously when water enters the system?
• NFPA 20 requires the diesel pump to operate at least how often?
• NFPA 13 states miscellaneous storage on racks up to how many feet tall?
• If buildup of grease or other material is present on water mist nozzle used to protect commercial type cooking equipment and ventilation system these nozzles must be replaced ___________.
• A high-rise is defined as a building taller than ______ feet.
• Which NFPA standard covers the inspection, testing, and maintenance of water-based fire protection systems?
• How often are the accuracy of pressure gauges and sensors on a fire pump checked?
• Gauges shall be replaced or tested by comparison with a calibrated gauge every ________
• When the system is exposed to supply, how often should water mist nozzles be replaced or a representative sample tested?
• Which type of switch is used on the alarm line of an alarm valve that has a retard chamber in the trim?
• Under NFPA 20, where should a suction pressure regulating valve be installed?
• What is the minimum stock of spare sprinklers that shall be maintained on the premises for sprinkler systems having less than 300 sprinklers?
• The two chemicals allowed to be used in antifreeze systems connected to public water supplies are
• In a pre-action system, a maximum of ______ sprinklers may be controlled by one deluge valve.
• When hydrostatic testing a dry pipe valve clapper should be latch open to ________
• An example of a flow test that is adequate to move a master pressure regulating device from its seat is the quarterly _____ test.
• Gauges must be replaced or tested by comparison with a calibrated gauge every how many years?
• The objective in NFPA 13R is to allow occupants to escape in case of fire for how many minutes?
• A partial flow hose connection pressure regulating device must provide adequate pressure and volume to
• When water supply is insufficient, what must be provided?
• During hydrostatic testing of a dry system, the dry-pipe valve clapper must be latched open or removed.
• Pressure regulating devices on manual standpipe systems shall be full-flow tested every five years.
• Which of the following is an example of ordinary hazard?
• Antifreeze usage in ESFR systems is allowed only if:
• According to NFPA 20, how often must screens on the suction intake of an open-source water supply be inspected for debris?
• Combined dry-pipe pre-action systems are required to have manual operation of the detection system.
• A common release characteristic of Deluge and Pre-Action systems (regardless of release method) is
• How should high expansion foam systems operate?
• The main relief valve is located on ______ side of the pump.
• NFPA 13 requires clamps to support the weight of a standpipe at every other level.
• A ________ fitting is used when the pipe size is different than the pump suction size.
• Under a no flow condition, the ______ discharges water to keep the pump cool.
• Water motor gongs and pressure switches shall be inspected at what interval?
• In a wet pipe sprinkler system, which measurement is indicated by the gauge located above the clapper of the alarm valve?
• Which type of system will not provide adequate protection for stockpiles of contents with moderate release rates that are stacked to a height of 10 inches?
• Antifreeze solution is allowed in systems with ESFR sprinklers under which of the following conditions:
• System valve internal inspection is required every how many years for alarm valves, strainers, filters, and check valves?
• What is the minimum distance from a sprinkler to the wall?
• What characteristic makes listed fire stopping materials effective when heated?
• Antifreeze systems are used for the portion of the fire sprinkler system that is in an area where the temperature cannot be reliably maintained at or above ________
• When greasing a fire pump and electric driver as part of maintenance prior to the annual test, this should be done?
• What testing interval applies when using a foam discharge to inspect a foam system's mechanical and electrical components?
• Sprinklers under glass skylights exposed to the direct sun shall be of the _________ temperature classification.
• The maximum unsupported length on the end of a branch line with a 1 inch Schedule 40 steel pipe is ______
• What does the fire department use the FDC for?
• A diesel fire pump test shall be conducted with flowing water.
• What is the maximum pipe size (in inches) that must be non-corrosive?
• Which test is used to move a master pressure regulating device from its seat?
• What is the mandated frequency for performing a foam discharge test on a foam system to check its components?
• Which ceiling type is not considered obstructed construction?
• In an alarm valve with a retard chamber in the trim, which switch should be used on the alarm line?
• Foam concentrate solution shall be tested at what interval?
• The priming water level in supervised pre-action systems shall be tested quarterly for compliance with the _____
• Which NFPA standard covers suction intake screens on open-source water supplies?
• The fitting required at the bottom of a gravity tank discharge pipe is a/an ________.
• When a water tank serves both domestic and fire protection, the domestic connection shall be connected where relative to the level for the fire protection demand?
• Post indicator valves shall be spring or torsion tested ______.
• Low temperature alarms installed in valve enclosures must be tested annually at the beginning of which season?
• What is the maximum spacing between anchors for a 6-inch main in vertical orientation?
• During a fire pump test, which valve is inspected?
• The minimum allowable operating pressure applied to a standard sprinkler is __________
• When the supply of water is not adequate, what must be provided?
• A pre-action system that activates only when the detection system is triggered is called a ______ pre-action system.
• To verify that all mechanical and electrical components of a foam system are functioning, at what frequency should the discharge test occur?
• Where installed, circulation relief valves_________
• The water flow alarm on a fire protection system combined with a building's heating and air conditioning system must respond to discharge through the system's test pipes under what condition?
• The alternative hydrostatic test pressure to 200 PSI is 50 PSI above the maximum pressure. Which option represents this correctly?
• A pressure relief valve is required on a diesel fire pump when there is an overrun of
• What is an example of ordinary hazard?
• Foam is an additive in sprinkler systems as specified by NFPA 25 A.13.4.5.2.2.3.B.
• Hydraulic testing of a dry system _________
• What is the minimum height off the floor for the fire pump controller?
• How often shall waterflow devices on a water mist system be inspected to verify they are free from physical damage?
• Fire sprinklers may be removed from one job site and reinstalled at another job site ______.
• What is used on a butterfly valve to prevent the valve from being opened or closed too quickly?
• The classification used by NFPA 13 to categorize buildings by fire vulnerability is called
• Which type of sprinkler was described as standard response pendent?
• What is the minimum distance above the bottom of the tank that an anti-vortex device must be installed?
• During the dry pipe valve test, what state must the quick opening device be in?
• If a facility has 300 standard response pendent sprinklers that are all 50 years old, how many must be removed and sent for testing?
• The interconnecting piping for jockey pump controller sensing lines has a nominal diameter of what?
• Which device shall be installed where an electric variable speed pressure limiting controller is installed and the maximum total discharge head adjusted for elevation exceeds the pressure of the system components?
• A test of the diesel fire pump shall be conducted without flowing water. The pump shall run for a period of:
• How often should a visual inspection for signs of water on electrical parts of a pump assembly be performed?
• According to NFPA 20, two or more water tanks are required as the primary source for which type of building?
• Which interlock configuration is used by combined dry-pipe pre-action systems?
• How often shall foam systems be tested with a foam discharge into the system piping to verify the operation of mechanical and electrical components?
• Which lift is not suitable for centrifugal pumps?
• Which frequency should a full-flow test on a master pressure regulating device be performed, and what should be done with the results?
• Sprinklers installed where maximum ambient ceiling temperatures do not exceed 100 degrees F shall be _______ temperature rated sprinklers.
• When performing routine maintenance on a foam system, how frequently should a discharge test be conducted to inspect components?
• The fitting at the bottom of gravity tank discharge pipe is base elbow.
• When should main pressure relief valves be inspected?
• In ceilings finished with metal lath and plaster, what is the maximum pipe size that may be supported by a toggle?
• What size outlets do class III standpipes have?
• For a fire pump rated for 1000 GPM delivery, how many outlet gate valves should be on a test header?
• Which statement is true regarding the use of reconditioned valves and devices in existing systems?
• During a compliance test of a foam system, how often must the discharge test be performed to examine all components?
• During a full-flow test of a hose connection pressure regulating device, what must be done with devices that do not meet specifications?
• Which condition is NOT a listed weekly verification for master pressure-regulating devices?
• All hose connection pressure regulating devices shall be inspected annually to verify the following except which item?
• The exception limit for FDC based on area is ______ square feet.
• Which of the following is true about the five-year flow test requirement for standpipes?
• Dry pipe valve shall be tested every how many years and whenever the system is altered?
• In ceilings finished with metal lath and plaster, what is the maximum pipe size that may be supported by a toggle?
• For a 3500-gallon pump, the circulating (casing) relief valve size is ______.
• What is the minimum temperature in degrees Fahrenheit for a fire pump room?
• How often must master pressure-regulating devices be inspected?
• The circulating (casing) relief valve is _______ for a 3500-gallon pump. (size)
• The testing and inspection of alarm and detection devices on foam systems shall be carried out in accordance with which NFPA standard?
• NFPA 20 requires the discharge components to be capable of handling the maximum total discharge head at what condition?
• How often does NFPA 20 require a diesel pump to be run?
• Which temperature classification applies to sprinklers located under glass skylights exposed to direct sun?
• What is the maximum protection area for standard sprinklers in light hazard, unobstructed construction?
• Which glycol is used in factory premixed antifreeze solutions?
• NFPA 13 requires a fire department connection for all sprinklered buildings, including those with dry-systems, except single-story buildings not exceeding ______ square feet.
• For a 6-inch sprinkler main supported entirely with post-installed anchors in the vertical position, what is the maximum spacing?
• What is the minimum distance above the bottom of a tank at which an anti-vortex plate must be installed?
• How often must pressure regulating devices on automatic standpipe systems be full-flow tested?
• Installation standards require heat tracing that is protecting fire sprinkler piping against freezing to be
• The maximum floor area on any one floor in an ordinary occupancy that is supplied by one system riser is ______ sq ft.
• Trip testing the quick-opening device should be performed according to whose instructions?
• Which condition triggers the need for an auxiliary drain valve on a wet pipe system?
• Which instructions govern the trip testing of quick-opening devices?
• If a system's average static pressure is 175 psi, what hydrostatic test pressure is required?
• The maximum floor area on any one floor in an ordinary hazard occupancy that is supplied by one system is _______.
• Double interlock systems are limited to 500 gallons unless water can be delivered to the inspector's test connection within 60 seconds. How many gallons is the limit?
• For ensuring ongoing readiness, at what interval should foam systems be tested with a discharge to inspect all components?
• For combined dry-pipe pre-action systems, provision shall be made for the manual operation of the detection system at locations requiring not more than ______ travel.
• NFPA 13R aims to allow occupants to escape in case of fire for how many minutes?
• Pumps shall furnish not less than ______ of the total rated head.
• In NFPA 13, buildings are classified by their vulnerability to fire. This classification is referred to as what?
• Which order is used to set the K-factor value for cooking equipment nozzle in the alternate formulation?
• How often shall foam concentrate strainers be inspected?
• Who shall the inspection report, with recommendations, be filed with?
• Which test verifies the integrity of the main drain path during routine maintenance?
• How often shall foam systems be tested with a foam discharge into the system piping in order to check all mechanical and electrical components?
• According to NFPA 20, a refill valve shall be used for each water supply tank used for fire protection that is capable of being actuated by which means?
• The maximum distance between standard sprinklers in a light hazard is _______.
• The shut off head shall not exceed what percent of the rated head for any pump?
• In unobstructed construction, the deflector distance below the ceiling is ______.
• NFPA 13 requires clamps to support the weight of a standpipe at every ______.
• During a main drain test under flow conditions, the pressure observed is the residual pressure.
• The minimum size pipe that may be used on a gravity tank fill line is
• A valve designed to reduce the downstream water pressure under both flowing and non-flowing conditions is called a ______.
• In NFPA 22, the water level in the tank shall never be more than how many inches below the designated fire service level?
• What is an acceptable water metering device(s) used for flow testing of water?
• The minimum clearance is expressed in which unit of measurement?
• The hydraulic design information sign for a sprinkler system shall include each of the following except:
• Support spacing for CPVC pipe is _______.
• During scheduled testing, how frequently should a foam discharge be used to assess the system's mechanical and electrical components?
• According to NFPA 20, the ______ shall approve the system method or device for the intended purpose.
• In light hazard installations, the maximum spacing between sprinklers is 15 feet.
• Which of the following conditions would not require the replacement of a water mist nozzle?
• In the inspection, test, and maintenance procedure for a valve other than a post indicator or wall indicator valve under component replacement action requirements, what is the last step to be performed?
• Foam is an additive in sprinkler systems according to NFPA 25 A.13.4.5.2.2.3.B.
• Which sprinkler system is described as containing air and being actuated by a supplemental fire detection system installed in the same area as the sprinkler?
• What type of system contains water for immediate discharge from sprinklers opened by heat?
• The main relief valve is located on which side of the pump?
• Where shall the hydraulic design information sign and semiautomatic standpipe systems be located?
• Trip testing the quick opening device should be in accordance with the ______
• Which sprinkler system uses open sprinklers that discharge water simultaneously when water enters the system?
• For validating foam system integrity through a discharge test, how frequently should the test be conducted?
• The standpipe system demand shall include 500 gpm for the first standpipe and ______ gpm for each additional standpipe until the total system demand is simultaneously flowing.
• Earthquake protection addressed in NFPA 13 requires clearance around all piping extending through ___________.
• A building is considered a high-rise when it is greater than ______ feet
• According to NFPA 20, what are the pressure requirements for the discharge components of a fire pump?
• The main relief valve is located on ________ side of the pump.
• What type of standpipe is not required to be hydrostatically tested at 200 psi or 50 psi in excess of 150 psi?
• What is the minimum clearance between a sprinkler and the wall?
• The hydrostatic testing of standpipes includes the Fire Department Connection. Which component is associated with this testing?
• Which of the following conditions would not require the replacement of a water mist nozzle?
• The pipes that directly supply the branch lines are _______
• When the water supply can not provide a flow rate of 150% of the pumps capacity, a placard with the ______ shall be placed in the pump room.
• NFPA 13 covers miscellaneous storage on racks up to how many feet in height?
• A non-decorative sprinkler with white paint applied at the factory has a/an ______ temperature range.
• In NFPA 22, what is the maximum allowed difference between the tank water level and the designated fire service level?
• In hydraulically designed systems, the size of pipe, number of sprinklers per branch, and the number of branch lines per cross main are limited by the available what?
• In hydraulically designed sprinkler systems, which factor primarily governs the maximum sizes and counts of piping components?
• If the water supply is not adequate, what must be provided?
• A flow test shall be conducted every 5 years on which classes of standpipes?
• The type of sprinkler system containing air and is actuated by a supplemental fire detection system installed in the same area as the sprinkler is a _________
• A sprinkler system with parallel cross mains connected by multiple branch lines is called a ________ configuration.
• When swapping out pressure gauges, it is important to verify that the arrow on the 3-way valve is pointed in the proper direction before removing the gauge and once the gauge is removed. The 3-way valve must be flushed adequately so any debris that may have accumulated does not end up in the new gauge.
• In a pre-action system, a deluge valve can control up to how many sprinklers?
• The normal rated capacity of a 2 1/2 inch inlet on an FDC is ________ gallons per minute.
• A common characteristic of a Deluge and Pre-Action system, regardless of release method, is
• Water curtains are commonly created using pendent sprinklers or nozzles spaced how many feet on center?
• ________ shall identify a hydraulically designed sprinkler system with a permanently marked weather proof metal or ridged plastic sign secured with corrosion resistant wire, chain, or other approved means.
• The automatic filling mechanism shall activate a maximum of how many inches below the overflow level?
• The anti-vortex plate must be installed at least how many inches above the bottom of the tank?
• A dry system shall be tested once every _____ years for gas leakage.
• What is the minimum clearance between the top of storage and a standard spray pendant sprinkler deflector?
• Mainline strainers shall be removed and inspected for damage and corrosion every ______.
• Crankcase oil on a diesel fire pump assembly must be changed out every ______ hours of runtime or annually.
• What is the minimum distance, in pipe diameters, from the back flow preventer to the suction side of the fire pump?
• What is the minimum hydrostatic test pressure specified for these systems?
• A calculated system for a building or a calculated addition to a system in an existing building, shall supersede the rule in NFPA 13 governing pipe schedules, except that all systems shall continue to ________
• Which statement about post indicator valve checks is true?
• One system riser can supply up to how many square feet on a single floor in an ordinary occupancy?
• A one-inch auxiliary drain valve on a wet pipe system is required for an isolated trapped section of pipe when the capacity of that section is more than
• A full flow test on the master pressure regulating device shall be conducted how often on each valve and compared to previous test results?
• To satisfy testing requirements, how often must a foam discharge test be executed to verify system components?
• Fittings shall be extra heavy pattern where pressure is ______ psi or more.
• Combined dry-pipe pre-action systems are what type of interlock systems?
• Deflector distance below ceiling in unobstructed construction falls within which range?
• When is it permitted to replace the antifreeze in an existing system with factory premixed antifreeze solution?
• Pumps shall not furnish not less than _____ % of total rated head
• What is the required testing interval for a foam system discharge test intended to check all mechanical and electrical components?
• Sprinkler or automatic spray nozzles being used in a commercial type cooking equipment ducts, duct collars, and plenum areas shall have an orifice with K-factor not less than
• The full-flow test interval for pressure regulating devices on manual standpipe systems is specified as which?
• A system that activates only when the detection system activates, but does not activate when a sprinkler opens is a __________ pre action system.
• At what intervals shall compress air foam generating equipment and accessories be inspected?
• Which interval is specified for testing foam systems via a foam discharge to confirm proper operation of mechanical and electrical parts?
• The standpipe system demand shall be based on the design criteria in effect at the same time of which activity?
• Fire department connections shall be inspected how often?
• Which statement best describes Class 1 standpipes?
• The maximum protection area value of 225 sq ft applies to which hazard category?
• During foam system discharge testing, components to be checked include
• Which standard governs the evaluation of modifications to sprinkler systems?
• A flow test of a well shall be continuous for a period of at least ______ hours at 150% of the rated capacity of the fire pump with 15 minute intervals reading over the period of the test.
• Standpipes required by code should be installed according to which NFPA standard?
• What action should be taken after performing a flow test on a hose connection pressure regulating device?
• Which instruments are used to test a hose connection pressure regulating device?
• NFPA 25 requires not less than _______ sprinklers or 1 % shall be sent for testing at different intervals depending on the sprinkler type.
• Class III standpipe outlets have which diameter combination?
• A diesel fuel storage tank is required to always be minimum of ______ full.
• Where should the hydraulic design information sign be located in systems with semiautomatic standpipes?
• According to NFPA 20 a ________ refill valve shall be used for each water supply tank used for fire protection.
• What is the minimum gauge pressure at the pump suction flange when all pumps are operating at 150% capacity?
• During a flow test on a fire hose connection with a pressure regulating device in place, what should be determined and recorded on the inlet and outlet sides of the device?
• What is the standard unit used to express the flow rate for an FDC inlet?
• Which NFPA section is cited for the inspection of sprinkler pressure-reducing valves in the source material?
• Combined dry-pipe pre-action systems must be equipped with means for manual operation.
• Dry system design includes a ______ percent increase in area of operation.
• Obstructed construction requires a deflector distance of _____ below the beams to a maximum of 22" below the deck
• On wet fire systems, the pressure gauge located above the clapper of the alarm valve indicates the ________.
• When performing a flow test on a master pressure regulating device, the results should be compared to which baseline?
• The main relief valve location relative to the pump is on which side?
• When a suction tank supplies a fire pump, the control valve should be located as close as possible to the ___________.
• When building modifications are made in a sprinklered building, NFPA 25 requires the property owner to do what?
• How often does NFPA 20 require a diesel fire pump to be run?
• Which of the following items is not required to be shown on the hydraulic design information sign?
• Which statement about temperature ratings for factory-painted sprinklers is true?
• For safety and reliability, how often should the foam discharge test be carried out on a foam system?
• According to NFPA 20, screens on the suction intakes of a water supply from an open source must be inspected how often for accumulated debris?
• After how many years should quick response sprinklers be tested or replaced?
• Which securing method is required for the weatherproof sign identifying hydraulically designed sprinkler systems?
• A class 1 standpipe shall provide _______ hose connections to supply water for use by fire departments and those trained in the handling heavy fire streams
• What is used on a butterfly valve to prevent rapid opening or closing?
• If two 4 inch 45-degree groove fittings are used for an offset, how far is the approximate run when the travel is 48 inches overall and the takeout is 3 feet? Calculate to the nearest 1/4 inch.
• Heat tracing shall be inspected and maintained in accordance with which requirements?
• During gauge replacement, why must the 3-way valve be flushed adequately?
• What is the purpose of a quick opening device?
• When full flow testing a hose connection pressure regulating device the result are compare
• When testing a hose connection pressure regulating device with a pitot or flowmeter and pressure gauges, the findings should be compared to which baseline?
• Water curtains are commonly created using which type of sprinklers?
• What is the minimum duration for hydrostatic testing?
• During an air leakage test on pre-action systems tested at 40 psi, allowable pressure loss is up to how many psi?
• Compared to steel pipe, CPVC has how much hydraulic friction?
• During a flow test on a fire hose connection with a pressure regulating device in place, what parameter should be recorded on both the inlet and outlet sides of the device?