Table 14.7a Pressure Loss in HVACR Elbows Expressed as Equivalent Length of Tube, feet

Outside Diameter, inches	90º Elbows
	Short Radius *	Long Radius
¼	.7	.6
5⁄16	.8	.7
⅜	.9	.8
½	1.2	1.0
⅝	1.5	1.3
¾	1.6	1.4
⅞	1.8	1.6
1⅛	2.4	2.0
1⅜	3.2	2.2
1⅝	3.8	2.6
2⅛	5.2	3.4
2⅝	6.5	4.2

NOTE:
* Two 45º radius ells equal one 90º short-radius ell.