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Monitor pressure readings precisely, conduct accurate tests, and keep systems operating safely with high-quality fire protection gauges from QRFS, your trusted fire protection supplier. We carry liquid-filled, dry, and digital air and water pressure gauges designed for dependable system monitoring, testing, and maintenance.
Whether you need sprinkler gauges that provide accurate readings during routine inspections or gauges for hydrant flow testing, our selection includes durable UL Listed and FM Approved product options built for real-world demands. From wet pipe systems to dry pipe systems to flow tests, choosing the right fire protection gauges ensures reliable, accurate pressure readings.
Fire protection gauges are essential parts for monitoring a fire protection system. Installed on risers, valves, and trim assemblies, these pressure gauges help verify that fire sprinklers and standpipes are supplied with the correct water or air pressure at all times. We offer fire protection system gauges in multiple dial sizes and pressure ranges to match your application.
Fire protection pros also rely on gauges for flow testing to assess water supplies, calibrate systems, and confirm pressure during inspections. Many gauge models are liquid-filled to reduce vibration and extend service life in demanding environments.
Fire protection systems don’t all operate the same—and having the right pressure gauges for a specific configuration is key to accurate monitoring, compliance, and safety. In wet pipe systems, water pressure gauges verify that pressurized water is available and within range. In dry pipe systems, air pressure gauges monitor the air charge that holds water back until activation.
Pressure readings help qualified individuals detect issues like leaks, closed valves, or supply problems early.
Both types are critical accessories for compliance, safety, and inspection readiness.
For contractors and other professionals who work on a variety of systems, including hybrid setups that have air and water pressure considerations, air/water pressure gauges offer a streamlined solution. Combination gauges that are UL Listed and FM Approved for fire sprinkler service are suitable for measuring both air and water pressure without switching instruments.
Need additional testing and monitoring equipment beyond gauges? Check out our selection of:
Or jump back to the QRFS home page to review our full line of fire protection equipment.
When should pressure gauges in a fire sprinkler system be replaced?
Pressure gauges should be replaced or recalibrated whenever they show damage or deliver unusual readings, as inaccurate gauges can hinder proper pressure monitoring. NFPA 25 also requires testing gauges for accuracy and recalibrating or replacing inaccurate models every five years to ensure reliable pressure readings.
What should I look for when inspecting my sprinkler system gauges?
Inspect gauges for obvious physical damage, fluttering or stuck pointers, and leaks around the gauge or its connections. Any gauge that is difficult to read should be replaced, and any device that appears inaccurate should be recalibrated or replaced to maintain system readiness.
Do pressure gauges in fire protection systems need NIST certification?
Most fire protection applications don’t require gauges certified by the National Institute of Standards and Technology (NIST), but some contracts — especially government or ISO-compliance work — may mandate it. NIST certification demonstrates the accuracy and traceability of a gauge and usually needs annual renewal to remain valid.
Why is selecting the right dial range important when buying a gauge for flow testing?
Choosing a gauge with a dial range that places expected flow testing pressure readings in the middle of the scale improves readability and prolongs gauge life. Gauges operating near the extremes of their range may be less accurate and more susceptible to damage.
What causes pressure gauge damage, and how can it be prevented?
Pressure spikes caused by valve slams, pump start-ups, and water hammer can damage gauge mechanisms if they exceed the gauge’s working range. Installing snubbers or pressure-limiting valves and opening valves slowly during system operations can help protect gauges from harmful surges.
Can a fire sprinkler system operate if a gauge is not working?
Yes — the system can still suppress a fire if a gauge is nonfunctional, but having working gauges is essential for routine inspections and early detection of issues like closed valves and other supply problems. Inoperable gauges should be repaired or replaced promptly to maintain compliance and peace of mind.
What parts are typically needed to install a new sprinkler gauge?
Installing a sprinkler gauge usually involves more than just the gauge itself — components such as a 3-way valve and plugs are often required. These accessories help secure the gauge, allow for easier replacement, and ensure accurate pressure measurement.
How often do gauges need to be recalibrated?
NFPA standards require gauges to be tested for accuracy and, if inaccurate, recalibrated or replaced at least every five years, or sooner if the gauge shows signs of inaccuracy. Many professionals choose to simply replace inexpensive gauges every five years rather than performing testing and recalibration, because it can be more time- and cost-effective.