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The PRO-SOURCE KUX0000021 is a steel FRL pressure gauge designed for use with miniature filter and compact regulator assemblies in compressed air systems. Built for inline monitoring of downstream air pressure, this gauge reads from 0 to 150 psi and mounts via a 1/8 inch port. Its compact form factor — 1.65 inches tall and 1.57 inches in length — makes it a practical fit for space-constrained pneumatic setups. Pneumatic technicians and maintenance professionals install this gauge to provide a direct visual reference of regulated line pressure without adding bulk to the FRL assembly.
This pressure gauge is suited for use in light industrial and commercial compressed air applications where a miniature or compact FRL unit is already in service. It is specified as an accessory component for miniature filter and compact regulator assemblies. Typical installation scenarios include pneumatic tool lines, automated equipment air supplies, and bench-mounted air stations where regulated pressure must be monitored continuously. The steel construction holds up to the demands of shop and mechanical room environments.
Designed for use with miniature filter and compact regulator assemblies requiring a 1/8 inch port pressure gauge accessory.
Installation is typically performed by pneumatic technicians or maintenance mechanics. Before installing or removing the gauge, depressurize the air line completely and verify zero pressure at the port. Apply thread sealant appropriate for compressed air service to the 1/8 inch port threads before seating the gauge. Do not overtighten the port connection, as steel gauge bodies can be damaged by excessive torque applied to small-diameter threads.
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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