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The VALUE COLLECTION 115AL25K01 is a liquid-filled analog pressure gauge designed for monitoring system pressure in plumbing, HVAC, and industrial fluid applications. The gauge features a 2.5-inch dial, a 0 to 1000 psi pressure range, and a lower-mount 1/4-inch NPT threaded connection. The stainless steel case and stainless steel Bourdon tube provide corrosion resistance in demanding environments, while glycerine or water fill dampens needle vibration and protects internal components during pressure spikes. Accuracy is rated at plus or minus 3-2-3 percent of scale across the full range. Licensed plumbers and HVAC technicians install this gauge in both residential and light commercial systems.
This gauge is suited for use on water lines, compressed air systems, hydraulic circuits, and HVAC pressure test points where a compact, lower-mount configuration is required. The 1/4-inch NPT lower-mount entry allows direct installation into tapped ports on manifolds, tanks, pump housings, and pressure vessels. The liquid-filled design makes it a practical choice for high-vibration or pulsating-pressure installations where a dry gauge would read erratically or wear prematurely.
Designed as an OEM-style replacement or new-install pressure gauge for systems with a 1/4-inch NPT lower-mount port and pressure requirements up to 1000 psi.
Installation should be performed by a licensed plumber or qualified HVAC technician following applicable IPC or IFGC guidelines. Depressurize and isolate the system before removing any existing gauge or fittings. Apply thread sealant tape to the NPT threads and tighten to the manufacturer fitting specification — do not over-torque, as this can crack the gauge socket. Verify there are no leaks at the connection point before returning the system to operating pressure.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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