it is the sprinkler system gauge – air or water pressure gauges installed at various points throughout the system – which provides building owners and fire safety professionals an easy way to prove the system has an adequate supply of water. gauges are a critical component of fire sprinklers, as their readings indicate whether the system has adequate pressure to do its job. the standard water pressure for a fire sprinkler should read between 150 psi to 175 psi. this is most often determined by a certified life safety professional. since many of a fire sprinkler system tests and inspections rely on the accuracy of the system’s pressure gauge(s), they should be periodically tested or replaced.
the nfpa 25 recommends quarterly inspections of water supply flow (every 3 months), although some people prefer to take the risk of having their fire sprinkler system inspected annually, which is the minimum recommendation from the nfpa. according to nfpa 25, standard for the inspection, testing, and maintenance of water-based fire protection systems, you should replace fire sprinkler gauges every 5 years or get them tested every 5 years by comparison with a calibrated gauge. to recalibrate the gauges, it is required that they are taken off the system (installing a temporary replacement), sent to a third party for recalibration, and then reinstalled. a properly inspected and tested fire suppression system is the single most effective way to protect lives and property within your building. a senior technician will perform a site walk-through and make a list of all fire protection assets showing due dates and quantities.
the importance of pressure gauges on a fire sprinkler system can sometimes be overlooked. this spring is compressed by pressure from the system, causing the needle to rise in relation to the amount of pressure. gauges can be manufactured for a specific application, such as fire pump readings and high pressure systems, or for a specific pressure type such as water pressure, air pressure, or a combination. gauges are typically installed on ¼”, 3-way valves to allow easy replacement without taking the system out of service since fire sprinkler systems should always be functioning. gauges help us ensure that the system is active, in service, and proper water supply and pressure is available. when the main drain on the system is opened completely, a water flowing pressure reading can be taken here which is known as a residual pressure.
as with any other critical component of a sprinkler system, gauges must be tested, inspected and maintained. the date of the gauge should also be noted in inspections, as nfpa requires all gauges to be tested or replaced every 5 years. i think when they tested the sprinkler system back in 2005they never let the pressure go back down to 75 psi. i would start by looking at the most recent inspection tag on the fire system, look at static pressure, this is the pressure when water is not moving. is your sprinkler system in a warehouse? i would contact a certified fire sprinkler company to verify the pressures are correct and not open any valves.
according to nfpa 25, standard for the inspection, testing, and maintenance of water-based fire protection systems, you should replace fire gauges shall be replaced every 5 years or tested every 5 years by comparison with a calibrated gauge. gauges not accurate to within 3 percent of .2* gauges shall be replaced every 5 years or tested every 5 years by comparison with a calibrated gauge. .3 gauges not accurate to, fire sprinkler gauge replacement cost, fire sprinkler gauge replacement cost, sprinkler gauge inspection, pressure gauge for fire protection service, nfpa 13.
according to nfpa 25, standard for the inspection, testing, and maintenance of water-based fire protection systems, gauges shall be replaced every 5 years or tested every 5 years by comparison with a calibrated gauge. fire sprinkler gauges & fire sprinkler valves this valve allows replacement of the gauge without having to shut off the system water supply. this video discusses the little know five year requirement quarterly, semi-annual and annual inspections all include testing that involves gauges. nfpa requires a monthly visual inspection of gauges, nfpa 25, where is the main control valve located?, wire gauge, fire sprinkler system, fire sprinkler companies, fire protection services, sprinklers.
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