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The ARMACELL apt03412 is a closed-cell, flexible elastomeric pipe insulation designed to control condensation and reduce energy loss on refrigerant and chilled-water lines. It features a fiber-free, formaldehyde-free, low-VOC, non-particulating formulation that protects indoor air quality in occupied spaces. The closed-cell nitrile and PVC composition provides a built-in vapor retardant barrier, eliminating the need for a separate vapor retarder wrap. Microban antimicrobial protection is integrated into the material to resist mold growth. Rated 25/50 for flame spread and smoke development, this insulation is approved for use in air plenums with wall thickness up to 2 inches. The nominal inside diameter is 3/4 inch with a 1/2 inch wall thickness, and each piece is 6 feet in length.
This insulation is suited for HVAC and refrigeration systems in residential and commercial environments where condensation control and indoor air quality are critical. Typical applications include chilled-water piping, refrigerant suction lines, and cold-water service lines in buildings where plenum-rated materials are required. The fiber-free construction makes it appropriate for sensitive indoor environments such as hospitals, schools, and clean-room adjacent spaces. It is installed by HVAC technicians and refrigeration service professionals.
Designed for use on 3/4 inch nominal outside diameter pipe and tubing in HVAC and refrigeration applications requiring plenum-rated, fiber-free elastomeric insulation.
Installation is performed by licensed HVAC or refrigeration technicians. Depressurize and isolate the pipe section before fitting the insulation sleeve. Use a compatible elastomeric insulation adhesive at seams and butt joints to maintain vapor barrier integrity. Follow local mechanical codes and manufacturer adhesive guidelines for plenum-rated installations.
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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