Flexible Hose Sizes

Table below gives some typical hose sizes for single braid high tensile strength steel wire reinforcement with an inner tube made of oil-resistant nitrile (BTN) and a cover compound made up of black neoprene (oil-resistant and abrasion-resistant type).

Hose ID		Wire ID	Hose OD	Working Pressure		Burst Pressure		Minimum Bend Radius	Weight
in.	mm	mm	mm	MPa	psi	MPa	psi	mm	kg/m
3/16	4.8	9.5	11.8	25	3630	100	14280	90	0.190
1/4	6.4	10.8	12.8	22.5	3270	90	12840	100	0.222
5/16	7.9	12.5	14.5	21.5	3120	85	12280	115	0.261
3/8	9.5	14.6	16.8	18	2610	72	10280	130	0.324
1/2	12.7	17.6	19.8	16	2320	64	9180	180	0.418
5/8	15.9	21.1	23.1	13	1890	52	7420	200	0.476
3/4	19	24.7	27	10.5	1530	42	6000	240	0.619
1	25.4	32.5	35	8.8	1280	35	5020	300	0.883
1−1/4	31.8	39.5	43.5	6.3	920	25	3600	420	1.220
1−1/2	38.1	45.8	49.8	5	730	20	2850	500	1.408
2	50.8	59	63	4	580	16	2280	630	1.889

End fittings used in flexible hoses tend to have a smaller internal diameter than their equivalent rigid tube fittings, thus creating slightly more resistance to flow.