原装冷库Packless美国帕利斯避震管VAF-10

packless model vaf vibration absorbers are designed for installation in the suction and discharge lines of air conditioning and refrigeration systems to dampen the transmission of air compressor-induces vibration through system piping. 
packless vaf’s are constructed of deep pitch corrugated tubing for increased flexibility and vibration absorption, covered by high tensile wire braid for superior strength. tubing and braid are reinforced by ferrules at each end, and connected to female copper tube ends by high temperature braze alloys. the units are designed for making sweat connections to refrigerant piping. sixteen models are available to fit copper tubing sizes from 1/4 through 4-1/8 inches o.d. 
each vaf is pressure tested then carefully vacuum tested using a highly sensitive helium mass spectrometer leak detection device. units are cleaned, dehydrated and sealed in plastic film after final installation. vaf’s are available either in bulk or individually boxed. 
packless vaf’s are recognized under the component programs of underwriter’s laboratories, inc. (u.l.) and the canadian standards association (c.s.a.) for application on both suction and discharge lines in sizes through 3-1/8 inches o.d., and for suction side only in sizes 3-5/8 and 4-1/8 inches o.d. 
installation 
packless vaf’s function best when installed as close to the compressor as possible, and perpendicular to the major vibration direction as shown below. 
for optimum absorption of vibration, the refrigerant line should be anchored at the end of the vaf furthest from the vibration source. 
install packless vaf’s horizontally, as shown above, wherever possible. care should be taken to allow sufficient space for the vaf so that it will not be subject to static compression or tension after soldering in place. units should be installed in a straight line; they are not intended to compensate for offset piping. 
although high temperature alloys are used to braze the joints of packless vaf’s, the torch flame should nevertheless be directed away from the ferrule when making the sweat connection of the vaf to the piping.