Danfoss STC 32-40, STC 15-25, STC Data sheet
Data Sheet
Shut-off valves
Type STC
Designed referring European standards to meet the challenges
in industrial refrigeration application requirements in Asia
STC are angleway and straightway shut-o
valves which are designed to meet industrial
refrigeration application requirements.
The valves are designed to give favourable ow
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 ow in both directions
• Max. working pressure: 25 bar (365 psig)
• Temperature range: -50 °C – 150 °C (-58 °F –
302 °F)
• Design specication according to DIN 3158
AI184486420328en-001002
Shut-o valves, Type STC
Media
Refrigerants
Applicable to HCFC, non ammable 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 specic
refrigerants are best checked at store.danfoss.com/en/, or by contacting your local Danfoss representative.
© Danfoss | Climate Solutions | 2021.11 AI184486420328en-001002 | 2
No.
Part
Material
EN
GB/T
ASTM
JIS
1
Housing
Steel
P285QH
10222-4
#20 QT
699
2
Valve bonnet
Iron
EN-GJS-400- 15
1563
QT400-15
1348
3
Spindle
Stainless Steel
X8CrNiS18-9
10088
AISI 303
A276
SUS303
G4303
4
Packing gland
Stainless Steel
X8CrNiS18-9
10088
AISI 303
A276
SUS303
G4303
5
Cone
Steel
11SMn30
100876Cone seal
Teon(PTFE)
7
O-ring
Cloroprene(Neoprene)
8
O-ring
Cloroprene(Neoprene)
9
Gasket for bonnet
Aluminium
EN AW-1050A
573
10
Bushing for packing
gland
Aluminium
EN AW-1050A
573
AL 6061-T6
B22111Gasket in packing gland
Teon(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
1563
QT450-10
1348
Shut-o valves, Type STC
Product specication
Material specication
STC 15-25 ANG STR
Figure 1: STC 15-25
Table 1: STC 15-25
© Danfoss | Climate Solutions | 2021.11 AI184486420328en-001002 | 3
No.
Part
Material
EN
GB/T
ASTM
JIS
1
Housing
Steel
P285QH
10222-4
#20 QT
699
2
Valve bonnet
Iron
EN-GJS-400- 15
1563
QT400-15
1348
3
Spindle
Stainless Steel
X8CrNiS18-9
10088
AISI 303
A276
SUS303
G4303
4
Packing gland
Stainless Steel
X8CrNiS18-9
10088
AISI 303
A276
SUS303
G4303
5
Cone
Steel
11SMn30
100876Cone seal
Teon(PTFE)
7
O-ring
Cloroprene(Neoprene)
8
O-ring
Cloroprene(Neoprene)
9
Gasket for bonnet
Aluminium
EN AW-1050A
573
10
Bushing for packing
gland
Aluminium
EN AW-1050A
573
AL 6061-T6
B22111Gasket in packing gland
Teon(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
1563
QT450-10
1348
Shut-o valves, Type STC
STC 32-40 ANG STR
Figure 2: STC 32-40
Table 2: STC 32-40
© Danfoss | Climate Solutions | 2021.11 AI184486420328en-001002 | 4
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