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Registered
Join Date: May 2000
Location: Los Alamos, NM, USA
Posts: 6,044
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R-414B is a mixture (azeotrope) of R-22, R-124, R-142B and R-600A (isobutane). It is subject to fractionization which will degrade it's performance as a refrigerant. Plus, since it contains R-22 the below applies:
R-22 damages the NBR nitrile or HBNR rubber parts (hoses and seals) used in R-12 and R-134a mobile air conditioning systems. The damage manifests itself as popping, blistering, loss of elasticity (ability to seal) and tendency to dryrot. In addition, R-22 is not compatible with the XH-5 or XH-7 desiccants found in R-12 or R-134a systems; the R-22 causes mechanical breakdown of the desiccant which can then travel downstream and clog the expansion device (valve, orifice tube, etc.). R-22 is intended for use in "hard" plumbed stationary applications with hermetically sealed compressors.
Last edited by Jim Sims; 10-28-2006 at 10:27 AM..
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