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The REFRIGERATION TECHNOLOGIES REFRRT175B is a brush-on microleak detector solution designed for refrigerant leak detection in HVAC and refrigeration systems. The product comes in an 8 oz bottle and includes a 10 inch extension dauber for precise application in tight or hard-to-reach areas. The brush-on format allows technicians to apply the detector fluid directly to fittings, joints, and connections, producing visible bubbling when a refrigerant leak is present. HVAC technicians and refrigeration service pros use this product during system commissioning, repair verification, and routine leak checks.
The REFRRT175B is suited for spot leak detection tasks on residential and commercial refrigeration and air conditioning systems. The extension dauber makes it practical for checking brazed joints, flare fittings, and service valve packing in confined spaces. This is the brush-on version of the Big Blu microleak detector line, offering the same detection chemistry in a more targeted, single-point application format compared to spray-on products.
Designed for use on refrigerant-containing systems including air conditioning, heat pump, and commercial refrigeration equipment where brush-on leak detection fluid is appropriate for fittings and joint inspection.
This product is applied by HVAC and refrigeration technicians during leak diagnosis and post-repair verification. Before applying, ensure the system is pressurized to a level appropriate for leak testing per manufacturer and local code requirements. Apply the detector fluid to fittings, joints, and valve connections using the dauber, then observe for bubble formation indicating a leak. Avoid contact with energized electrical components and clean residue from surfaces after testing is complete.
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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