Danfoss STC 32-40, STC 15-25, STC Data sheet
Data Sheet
Shut-o valves
Type STC
Designed referring European standards to meet the challenges in industrial refrigeration application requirements in Asia
STC are angleway and straightway shut-off valves which are designed to meet industrial refrigeration application requirements.
The valves are designed to give favourable flow characteristics and are easy to dismantle and repair when necessary.
Features
• Applicable to all common refrigerants including R717 and non corrosive gases/ liquids dependent on sealing material compatibility
• Available with:
◦ Heavy duty industrial handwheel for frequent operation
◦ Vented cap for infrequent operation
• Available in angle and straight versions with standard bonnet for installation in normal insulated systems
• The valves and caps are prepared for sealing, to prevent operation by unauthorized persons
• Internal metal backseating ◦ DN 15 - 150 (½ - 6 in.)
◦ Can accept flow in both directions
• Max. working pressure: 25 bar (365 psig)
• Temperature range: -50 °C – 150 °C (-58 °F – 302 °F)
• Design speci†cation according to DIN 3158
AI184486420328en-001002
Shut-off valves, Type STC
Media
Refrigerants
Applicable to HCFC, non flammable HFC, R717 (Ammonia) and R744 (CO2). Flammable hydrocarbons are not recommended. The valve is only recommended for use in closed circuits.
For further information please contact Danfoss.
New refrigerants
Danfoss products are continually evaluated for use with new refrigerants depending on market requirements.
When a refrigerant is approved for use by Danfoss, it is added to the relevant portfolio, and the R number of the refrigerant (e.g. R513A) will be added to the technical data of the code number. Therefore, products for speci†c refrigerants are best checked at store.danfoss.com/en/, or by contacting your local Danfoss representative.
© Danfoss | Climate Solutions | 2021.11 |
AI184486420328en-001002 | 2 |
Shut-off valves, Type STC
Product specification
Material speci€cation
STC 15-25 ANG STR
Figure 1: STC 15-25 |
Table 1: STC 15-25 |
No. |
Part |
Material |
EN |
GB/T |
ASTM |
JIS |
1 |
Housing |
Steel |
P285QH |
#20 QT |
|
|
10222-4 |
699 |
|
|
|||
|
|
|
|
|
||
2 |
Valve bonnet |
Iron |
EN-GJS-400- 15 |
QT400-15 |
|
|
1563 |
1348 |
|
|
|||
|
|
|
|
|
||
3 |
Spindle |
Stainless Steel |
X8CrNiS18-9 |
|
AISI 303 |
SUS303 |
10088 |
|
A276 |
G4303 |
|||
|
|
|
|
|||
4 |
Packing gland |
Stainless Steel |
X8CrNiS18-9 |
|
AISI 303 |
SUS303 |
10088 |
|
A276 |
G4303 |
|||
|
|
|
|
|||
5 |
Cone |
Steel |
11SMn30 |
|
|
|
10087 |
|
|
|
|||
|
|
|
|
|
|
|
6 |
Cone seal |
Teflon(PTFE) |
|
|
|
|
7 |
O-ring |
Cloroprene(Neoprene) |
|
|
|
|
8 |
O-ring |
Cloroprene(Neoprene) |
|
|
|
|
9 |
Gasket for bonnet |
Aluminium |
EN AW-1050A |
|
|
|
573 |
|
|
|
|||
|
|
|
|
|
|
|
10 |
Bushing for packing |
Aluminium |
EN AW-1050A |
|
AL 6061-T6 |
|
gland |
573 |
|
B221 |
|
||
|
|
|
|
|||
11 |
Gasket in packing gland |
Teflon(PTFE) |
|
|
|
|
12 |
Gasket for cap |
Nylon(PA 6) |
|
|
|
|
13 |
Screw |
Steel |
|
|
|
|
14 |
Al cap |
Aluminium |
EN AC-431002-70 |
|
|
|
1706 |
|
|
|
|||
|
|
|
|
|
|
|
15 |
Handwheel |
Iron |
EN-GJS-400- 15 |
QT450-10 |
|
|
1563 |
1348 |
|
|
|||
|
|
|
|
|
||
|
|
|
|
|
|
|
© Danfoss | Climate Solutions | 2021.11 |
AI184486420328en-001002 | 3 |
Shut-off valves, Type STC
STC 32-40 ANG STR
Figure 2: STC 32-40 |
Table 2: STC 32-40 |
No. |
Part |
Material |
EN |
GB/T |
ASTM |
JIS |
1 |
Housing |
Steel |
P285QH |
#20 QT |
|
|
10222-4 |
699 |
|
|
|||
|
|
|
|
|
||
2 |
Valve bonnet |
Iron |
EN-GJS-400- 15 |
QT400-15 |
|
|
1563 |
1348 |
|
|
|||
|
|
|
|
|
||
3 |
Spindle |
Stainless Steel |
X8CrNiS18-9 |
|
AISI 303 |
SUS303 |
10088 |
|
A276 |
G4303 |
|||
|
|
|
|
|||
4 |
Packing gland |
Stainless Steel |
X8CrNiS18-9 |
|
AISI 303 |
SUS303 |
10088 |
|
A276 |
G4303 |
|||
|
|
|
|
|||
5 |
Cone |
Steel |
11SMn30 |
|
|
|
10087 |
|
|
|
|||
|
|
|
|
|
|
|
6 |
Cone seal |
Teflon(PTFE) |
|
|
|
|
7 |
O-ring |
Cloroprene(Neoprene) |
|
|
|
|
8 |
O-ring |
Cloroprene(Neoprene) |
|
|
|
|
9 |
Gasket for bonnet |
Aluminium |
EN AW-1050A |
|
|
|
573 |
|
|
|
|||
|
|
|
|
|
|
|
10 |
Bushing for packing |
Aluminium |
EN AW-1050A |
|
AL 6061-T6 |
|
gland |
573 |
|
B221 |
|
||
|
|
|
|
|||
11 |
Gasket in packing gland |
Teflon(PTFE) |
|
|
|
|
12 |
Gasket for cap |
Nylon(PA 6) |
|
|
|
|
13 |
Screw |
Steel |
|
|
|
|
14 |
Al cap |
Aluminium |
EN AC-431002-70 |
|
|
|
1706 |
|
|
|
|||
|
|
|
|
|
|
|
15 |
Handwheel |
Iron |
EN-GJS-400- 15 |
QT450-10 |
|
|
1563 |
1348 |
|
|
|||
|
|
|
|
|
||
|
|
|
|
|
|
|
© Danfoss | Climate Solutions | 2021.11 |
AI184486420328en-001002 | 4 |
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