Maximum Allowable Working Pressure (MAWP) by Temperature

Insulon® Vacuum Jacketed Hose is available in Low Pressure (LP) and High Pressure (HP) models. The LP and HP designations indicate the pressure class, not a single fixed pressure. The specific Maximum Allowable Working Pressure (MAWP) depends on the hose diameter and application temperature. For high temperature applications, a pressure derating factor is applied. High temperature applications are defined as applications above room temperature, or above 38 degrees Celsius / 100 degrees Fahrenheit.

Use the tables below to select between Low Pressure (LP) and High Pressure (HP) Insulon® Vacuum Jacketed Hose. Engineering support is always available; to contact us, please use the chat widget in the lower righthand corner, or contact us.

To learn more about why a pressure class is not a single fixed pressure and why MAWP derates with temperature, see Pressure Class vs. MAWP: How Temperature Determines a Hose’s Pressure Limit.

Maximum Fluid Temperature		Maximum Allowable Working Pressure (MAWP) [psi]
Celsius	Fahrenheit	1/4″ ID	3/8” ID	1/2” ID	3/4″ ID	1″ ID
38	100	72	72	72	43	43
93	200	65	65	65	39	39
149	300	61	61	61	36	36
204	400	56	56	56	33	33
260	500	55	55	55	33	33
316	600	54	54	54	32	32
371	700	53	53	53	31	31
427	800	52	52	52	31	31
482	900	48	48	48	29	29
538	1000	33	33	33	20	20
593	1100	21	21	21	13	13
649	1200	13	13	13	8	8
704	1300	9	9	9	5	5
760	1400	4	4	4	2	2
816	1500	3	3	3	2	2

Maximum Fluid Temperature		Maximum Allowable Working Pressure (MAWP) [psi]
Celsius	Fahrenheit	1/4″ ID	3/8” ID	1/2” ID	3/4″ ID	1″ ID
38	100	750	750	750	600	500
93	200	682	682	682	546	455
149	300	637	637	637	510	425
204	400	585	585	585	468	390
260	500	577	577	577	462	385
316	600	570	570	570	456	380
371	700	555	555	555	444	370
427	800	547	547	547	438	365
482	900	510	510	510	408	340
538	1000	350	350	350	280	233
593	1100	228	228	228	183	152
649	1200	143	143	143	114	95
704	1300	93	93	93	75	62
760	1400	48	48	48	39	32
816	1500	39	39	39	31	26