Pressure Hoses

Pressure hoses are the internal hoses on which the heating conductors are applied. The used materials correspond to the demands on temperature resistance, pressure strength and minimum bending radius.

T1

Smooth PTFE hose with one braided layer of stainless steel wire (1.4301), max. operating temperature 250 °C

nominal diameter DN	4	6	8	10	12	16	20	25
operating pressure [bar]	275	240	200	175	150	135	100	80
min. bending radius [mm]	50	75	100	120	135	160	200	250

Temperature correction factor for the operating pressure:

100 °C	200 °C	250 °C
0.9	0.8	0.6

T2

Smooth PTFE hose with two braided layers of stainless steel wire (1.4301), max. operating temperature 250 °C

nominal diameter DN	6	8	10	12	16	20	25	32	40
operating pressure [bar]	275	250	225	200	175	150	130	70	50
min. bending radius [mm]	75	100	120	135	160	200	250	500	850

Temperature correction factor for the operating pressure:

100 °C	200 °C	250 °C
0.9	0.8	0.6

T3

Smooth PTFE hose with two winded and one braided layer of steel wire, max. operating temperature: 250 °C

nominal diameter DN	6	8	10	12	16	20	25	32
operating pressure [bar]	500	475	475	450	400	300	275	250
min. bending radius [mm]	60	85	110	150	175	200	240	275

Temperature correction factor for the operating pressure:

100 °C	200 °C	250 °C
0.9	0.8	0.6

T5

Corrugated stainless steel hose (1.4541 or 1.4571) with one braided layer of stainless steel wire (1.4301), max. operating temperature 600 °C

Heating hoses with T5 pressure hose need armatures made of stainless steel.

nominal diameter DN	4	6	8	10	12	16	20	25	32	40	50
operating pressure [bar]	100	150	100	100	65	65	40	50	25	40	25
min. bending radius [mm]	80	80	120	130	140	160	170	190	260	300	320

Temperature correction factor for the operating pressure:

100 °C	200 °C	250 °C	350 °C	550 °C
0.7	0.6	0.55	0.49	0.4

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