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New Refrigerants Enter Market

March 12, 2007
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RS-44 (R-424A) is one of several new refrigerants from ComStar International for retrofit applications.

COLLEGE POINT, N.Y. - Three new HFC refrigerants that work with mineral oil and, according to published reports, have A-1 safety ratings, are entering the U.S. market from ComStar International Inc. The safety rating documentation clarifies information published in the Jan. 15 issue of The NEWS. The refrigerants are RS-44 (ASHRAE designation of R-424A), RS-24 (R-426A), and RS-52 (R-428A).

According to the company, R-424A “is a nonflammable blend of R-125, R-134a, n-butane, isobutene, and isopentane, which has zero ozone depletion potential [ODP] and is also compatible with both traditional and synthetic lubricants. [The refrigerant] is suitable for use as a replacement for R-22 in new and existing commercial and industrial air conditioning and refrigeration systems as well as appliances.”

R-426A “is a nonflammable blend of R-134a, R-125, butane, and isobutene,” with the same zero ODP and for use with both mineral oils and synthetic lubricants. The refrigerant “can be used in all the main applications where R-12 is present, including hermetic and semihermetic compressor systems, cold stores, refrigerated transport, and dairy chillers.”

R-428A was described as suitable for use in applications where R-22, -502, -402A, and other refrigerants “are commonly found, including supermarket display cases, ice machines, cold storage, transportation of foodstuffs, freezer cabinets, freeze dryers, and environmental test chambers.”

For more information, go to www.comstarproducts.com.

Publication date: 03/12/2007

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