High Performance Safety Relief Valve, Type 441 DIN,
closed bonnet, gastight cap H2,
for steam, gas and liquid service

Technical specification:

Medium: Gases
Gases
Body material: (H28)
1.4408 / CF8M
Nominal diameter inlet: DN 100
Nominal diameter outlet: DN 150
d0 (ASME-DIN) [mm] 92,0
Alpha d S/G: 0,68
Alpha d L: 0,45
Pressure rating inlet: (H47)
PN 40 according to DIN EN 1092
Pressure rating outlet: (H51)
PN 16 according to DIN EN 1092
Flange facing inlet: (H84)
form B1 according to EN 1092
Flange facing outlet: (H88)
form B1 according to EN 1092
Set pressure: 1,40
Pressure unit: bar-g
Set pressure [bar-g] 1,40
Set pressure in [psi-g] 20,31
CDTP [bar-g] 1,40
CDTP [psi-g] 20,31
Operating temperature: 50
Temperature unit: °C - Celsius
Operating temperature in °C: 50,00
Operating temperature in °F: 122
Metal disc / mat.: (L44)
disc material 1.4404 / 316L
Gasket material: (MB1)
gasket material Graphite/1.4401
Bonnet material: (J54)
Bonnet material 1.4408 / CF8M, casted design
Spring material: (X00)
default material
Guide material: (I63)
Guide material: 1.4404 / 316L
Spindle material: (K4Z)
Spindle material: 1.4404 / 316L
Adjusting screw material: (K7U)
1.4401/ 1.4404/ 316/ 316L + PTFE/ glass
Stud bolt material Pos. 55 (L8K)
Material stud bolts pos. 55: 1.4401/A4-70/SA-193+320 B8M
Nuts material Pos. 56 (L9K)
Material nuts pos. 56: 1.4401/A4-70/SA-194-8M
Material certification for: (H01)