CB/T3841 Over Board Boiler Relief Valve
Materials of main parts
Body Material: Cast steel
Disc Material: Aluminum bronze
Stem Material: Stainless steel
Overview
Application: This CB/T3841 Over Board Boiler Relief Valve is designed for marine applications involving water, steam at 250 °C and under.
Material Specification:
Parts Name | Material Name | Material Marks |
|---|---|---|
Body, Cover | Cast steel | ZG230-450C |
Disc | Aluminum bronze | QA19-2 |
Stem | Stainless steel | 2Cr13 |
Technical Specifications:
Model: CB/T3841 Over Board Boiler Relief Valve
Type | Name | Nominal Pressure PN (MPa) | Nominal Diameter DN (mm) | Available Medium |
|---|---|---|---|---|
A | Flange connection dimensions and sealing surface comply with GB/T569 Relief Valve | 2.5 | 25, 32, 40 | Water, steam at 250 °C and under |
AS | Flange connection dimensions and sealing surface comply with GB/T2501 Relief Valve | 2.5 | 25, 32, 40 | Water, steam at 250 °C and under |
Dimensions(mm)
Type A
DN | Structure dimension | flange | bolt | Hand wheel | Lift m | |||||||||
L | H | H1 | t | D | D1 | D2 | b | d0 | Th. | n | D0 | S | ||
25 | 218 | 178 | 60 | 7 | 105 | 73 | 56 | 12 | 13 | M12 | 4 | 80 | 8 | 12 |
32 | 260 | 200 | 60 | 7.5 | 115 | 83 | 64 | 13 | 15 | M14 | 6 | 100 | 9 | 16 |
40 | 302 | 220 | 60 | 8 | 125 | 93 | 74 | 13 | 15 | M14 | 6 | 120 | 10 | 20 |
Type AS
DN | Structure dimension | flange | bolt | Hand wheel | Lift m | |||||||||
L | H | H1 | t | D | D1 | D2 | b | d0 | Th. | n | D0 | S | ||
25 | 218 | 184 | 60 | 7 | 115 | 85 | 68 | 16 | 14 | M12 | 4 | 80 | 8 | 12 |
32 | 260 | 208 | 60 | 7.5 | 140 | 100 | 78 | 18 | 18 | M16 | 4 | 100 | 9 | 16 |
40 | 302 | 220 | 60 | 8 | 150 | 110 | 88 | 18 | 18 | M16 | 4 | 120 | 11 | 20 |
