Refrigerant pipe insulation size?

Refrigerant pipe insulation size?





  • Refrigerant pipe insulation size?


    I’m in the middle of installing the refrigeration piping for a new W.I. freezer.

    My suction pipe is 7/8″, but the wholesaler screwed up and gave me 1-1/8″ Armaflex (3/4″ wall).

    I’m using it since I don’t feel like driving back to return the stuff. Will the insulation still work even if it’s a little too big and sloppy for the pipe, or will It cause ice balls to form and possible water damage for the areas that the lineset goes through?






  • Originally Posted by ammoniadog
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    I’m in the middle of installing the refrigeration piping for a new W.I. freezer.

    My suction pipe is 7/8″, but the wholesaler screwed up and gave me 1-1/8″ Armaflex (3/4″ wall).

    I’m using it since I don’t feel like driving back to return the stuff. Will the insulation still work even if it’s a little too big and sloppy for the pipe, or will It cause ice balls to form and possible water damage for the areas that the lineset goes through?

    Make sure the ends are sealed to prevent moisture from entering.

    You could try silicone at the end of each 6′ length.



















  • I’d wrap a single wrap of foam tape around the pipe at the end before you slip the armaflex over it so that it’ll match the inside diameter closer and then seal the two together with silicone.

    “Is this before or after you fired the parts cannon at it?” – senior tech

    I’m tired of these mediocre “semi flammable” refrigerants. If we’re going to do it let’s do it right.

    Unless we change direction we are likely to end up where we are going.

    “It’s not new, it’s better than new!” Maru.







  • On freezers, I tie the liquid line to the suction line, wrap them both in foil tape and put them in the same jacket. This also improves system performance, the heat transfer between the 2 also compensates for the thermo-stress in the insulation. As previously mentioned, make sure the ends are sealed and any sharp bends are cut to fit, and not crumpled.






  • Refrigerant pipe insulation size? Originally Posted by Bob-Brr
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    On freezers, I tie the liquid line to the suction line, wrap them both in foil tape and put them in the same jacket. This also improves system performance, the heat transfer between the 2 also compensates for the thermo-stress in the insulation. As previously mentioned, make sure the ends are sealed and any sharp bends are cut to fit, and not crumpled.

    Doesn’t that screw up the suction superheat?