... Manufacturer -ISO9001-2000 2.UPC,NSF61,WRAS 3, ASME B16.22/EN1254-1 (Mueller,Elkhart,Nibco) R410A High Pressure Refrigeration ... 4"0.8110.63510.0129.5539.2218.9828.819ANSI B16.22 REF410A3/8"0.816.7926.3956.1015.8895.7375. ... 639ANSI B16.22 REF410A1/2"0.814.9944.7014.4864.334.2184. ... 141ANSI B16.22 REF410A5/8"1.025.0314.7374.5194.3624.2494. ...