These safety valves are used as Extra Pressure Protection Device for the equipment and pipeline of the steam, ect. The working temperature with Carbon Material Type are less than 425℃ and with WC6 Material type are less than 500℃ and WC9 Material Type are less than 550℃.
A48SB High Temperature and High Pressure Safety Valve Material
|
NO
|
Parts
|
Cast Steell Material
|
WC6 Material
|
WC9 Material
|
|
1
|
Body
|
WCB
|
ZG1Cr5Mo
|
ZG15Cr1MoV
|
|
2
|
Seat
|
2Cr13
|
1Cr18Ni9Ti
|
12Cr1MoVA
|
|
3
|
Adjusting Ring
|
2Cr13
|
1Cr18Ni9Ti
|
1Cr18Ni9Ti
|
|
4
|
Disc
|
2Cr13
|
17-4PH
|
17-4PH
|
|
5
|
Guiding Sleeve
|
2Cr13
|
1Cr18Ni9Ti
|
1Cr18Ni9Ti
|
|
6
|
Heat Radiator
|
ZG230-450
|
ZG230-450
|
ZG230-450
|
|
7
|
Bonnet
|
ZG230-450
|
ZG230-450
|
ZG230-450
|
|
8
|
Spring
|
50CrVA
|
50CrVA
|
50CrVA
|
