Data Sheet
Gauge valve
Type SNV-ST and SNV-SS
For servicing of heavy-duty industrial refrigeration applications
SNV stop gauge are designed as service valves
with a very sturdy construction. SNV-ST are
made in steel approved for low temperature
operations, SVA-SS are stainless steel versions.
SNV valves have internal backseating (metal to
metal), enabling the spindle seal to be replaced
while the valve is still under pressure.
SNV-ST and SNV-SS are available in standard
branch length conguration as well as
extended branch conguration, with extension
length versions from 50 to 150 mm.
AI244986497087en-001002
Gauge valve, type SNV-ST and SNV-SS
Features
• Applicable to HCFC, non ammable HFC, R717 (Ammonia), R744 (CO2) and hydrocarbons
• Suitable for "heavy duty" industrial applications including high pressures and wide temperature range
• The SNV-ST and SNV-SS valves have backseating (metal to metal)
• Compact and light valve for easy handling and installation
• No special ow direction required
• Provide high ow characteristics
• Each valve type is clearly marked with type and size
• Housing and bonnet material is low temperature steel (stainless steel for SNV-SS) according to requirements of the
Pressure Equipment Directive and other international classication authorities
• Valve safety is enhanced with the spindle being secured such that it cannot be unscrewed
• Standard versions available with Max. operating pressure ranges:
◦ 52 bar g / 754 psig Valves
◦ 65 bar g / 943 psig Valves
• Full temperature range:
◦ -60 – 150 °C (200°C) / -76 – 302 °F (392°F)
• Classication: DNV, CRN, BV, EAC etc.
© Danfoss | Climate Solutions | 2021.03 AI244986497087en-001002 | 2
Description
SNV-ST
SNV-SS
Conguration
Standard
Extended branch
Standard
Extended branch
Valve body/connection material
Steel
Stainless steel
Equipment
Cap
Handwheel
Cap
Connection standard
ANSI/ASME B1.20.1
DIN 3861
DIN 3901
EN 10220
ISO 228-1
ISO 7-1
ANSI/ASME B1.20.1
EN 10220
ISO 228-1
Bottom branch connection type
Butt weld
Cutting ring
G
NPT
R
Butt weld
G
NPT
Side branch connection type
Cutting ring
G
NPT
Rc
UNF
G
NPT
Special connections
Manometer connection
Manometer connection
Max working pressure [bar]
52 bar
65 bar
52 bar
65 bar
Max working pressure [psig]
754 psig
943 psig
754 psig
943 psig
Packing format
Multi pack
Industrial pack
Multi pack
Industrial pack
Gauge valve, type SNV-ST and SNV-SS
Portfolio overview
SNV-ST and SNV-SS oers numerous congurations and connections as well as versions for high-pressure
applications, as shown in table.
Versions with dierent properties may be produced to order. Contact Danfoss for further information about made to
order products.
Figure 1: SNV-ST Figure 2: SNV-SS
Table 1: SNV-ST and SNV-SS options
NOTE:
Not all combinations are possible. For an overview over standard code number properties, refer to Ordering chapter.
© Danfoss | Climate Solutions | 2021.03 AI244986497087en-001002 | 3
Gauge valve, type SNV-ST and SNV-SS
Media
Refrigerants
SNV-ST and SNV-SS valves are currently authorized by Danfoss for use with more than 70 R-numbers HCFC, nonammable HFC, Ammonia, CO2 and hydrocarbons.
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 | 2021.03 AI244986497087en-001002 | 4
Temperature range
-60 °C – 150 °C / -76 °F – 302 °F
Maximum working pressure
Standard versions available with Max. operating pressure ranges:
52 bar / 754 psig Valves
65 bar / 943 psig Valves
SNV-ST
SNV-ST and SNV-SS (extended branch)
A
B
A
B
L
No.
Part
Material
EN
JIS
ASTM
1
Housing
Steel
P285QH
EN 10222-4
SFL 2
G 3205
LF2
A350
Stainless steel (SNV-SS)
XSCrNi18-10, 10088
AISI 304
2
Spindle
Stainless steel
X8CrNiS 18-9
EN 10088
DIN 17440 (SNV-SS only)
SUS 303
AISI 303
3
Locking ring
Steel
4
Sealing ring
Teon
5
Seal cap gasket
Nylon
6
Gland nut
Steel
7
Seal cap
Steel
Gauge valve, type SNV-ST and SNV-SS
Product specication
Pressure and temperature
Table 2: Pressure and temperature data
Design
Housing
Made of special steel, approved for low temperature operations
Spindle
Equipped with stainless steel spindle, which is ideal for O‑ring sealing
Material specication
Table 3: SNV-ST and SNV-SS
Table 4: Material specication according to standards
© Danfoss | Climate Solutions | 2021.03 AI244986497087en-001002 | 5
CD 6
CD10
1
⁄4 MPT
3
⁄8 MPT
1
⁄4 FPT
3
⁄8 FPT
1
⁄4 R
3
⁄8 R
duis e xternal pipe diameter
Cutting ring, DIN 3861 & DIN 3901 class
L, du = 6 mm
Cutiing ring, DIN 3861 & DIN 3901 class
L, du = 10 mm
1
⁄4 inch male NPT ANSI/ASME B1.20.1
3
⁄8 inch male NPT ANSI/ASME B1.20.1
1
⁄4 inch female NPT ANSI/ASME B1.20.1
3
⁄8 inch female NPT ANSI/ASME B1.20.1
1
⁄4 inch male ISO 7-1
3
⁄8 inch male ISO 7-1
1
⁄4 RC
3
⁄8 RC
G ½
W
ØD
T
DANFOSS
A148B15.10
1
⁄4 inch female ISO 7-1
3
⁄8 inch female ISO 7-1
G ½ inch
1
⁄2 inch welding connection D = 21.3 mm / 0.839 in
T = 2.3 mm / 0.091 in.
Gauge valve, type SNV-ST and SNV-SS
Connections
Available with the following connections:
• CD Cutting ring
• MPT Male NPT thread (ANSI/ASME B1.20.1)
• FPT Female NPT thread (ANSI/ASME B1.20.1)
• R Male thread (ISO 7-1)
• Rc Female thread (ISO 7-1)
• G thread
• W Welding connection
For more details refer to Ordering chapter.
Table 5: Connections
NOTE:
Fittings not included
Table 6: Connections
Installation
No special ow direction is required. The valve is designed to withstand high internal pressures. However, the piping
system in general should be designed to avoid liquid traps and reduce the risk of hydraulic pressure caused by
thermal expansion.
For further information refer to installation guide for SNV-ST and SNV-SS.
© Danfoss | Climate Solutions | 2021.03 AI244986497087en-001002 | 6
Type
SizeCG
Weight
SNV-ST
mm
115320.36 kg
in.
4.53
1.26
0.79 lb
SNV-ST (Manometer)
mm
127450.56 kg
in.
5.00
1.77
1.22 lb
Gauge valve, type SNV-ST and SNV-SS
Dimensions and weights
Figure 3: SNV-ST Figure 4: SNV-ST (Manometer)
Table 7: SNV-ST Standard versions
Figure 5: Extended branch
© Danfoss | Climate Solutions | 2021.03 AI244986497087en-001002 | 7
Type
SizeCGLWeight
SNV-ST, SNV-SS
mm
1313250
0.60 kg
in.
5.16
1.26
1.97
1.32 lb
SNV-ST
mm
18132100
0.60 kg
in.
7.13
1.26
3.94
1.32 lbmm20632125
0.60 kg
in.
8.11
1.26
4.92
1.32 lb
SNV-SS
mm
23132150
0.60 kg
in.
9.09
1.26
5.91
1.32 lb
Gauge valve, type SNV-ST and SNV-SS
Table 8: Extended branch versions
NOTE:
Specied weights are nominal, and may dier depending on actual conguration of the code number.
© Danfoss | Climate Solutions | 2021.03 AI244986497087en-001002 | 8
Type
Spec. key
Bottom
branch
Side branch
Equipment
Pack format
Qty/pack
Code no.
SNV-ST
SNV-ST CD6-1/4MPT
1
⁄4 NPT ext
Cutting ring 6 mm
Cap
Multi pack
12 pc
148B3742
SNV-ST
SNV-ST CD6-
3
⁄8MPT
3
⁄8 NPT ext
Cutting ring 6 mm
Cap
Multi pack
12 pc
148B3744
SNV-ST
SNV-ST CD6-
1
⁄4MPT
1
⁄4 NPT ext
Cutting ring 6 mm
Handwheel
Industrial pack
30 pc
148B4216
SNV-ST
SNV-ST CD10-
1
⁄4MPT
1
⁄4 NPT ext
Cutting ring 10 mm
Cap
Multi pack
12 pc
148B3741
SNV-ST
SNV-ST CD10-
3
⁄8MPT
3
⁄8 NPT ext
Cutting ring 10 mm
Cap
Multi pack
12 pc
148B3743
SNV-ST
SNV-ST
7
⁄16UNF-1⁄4MPT
1
⁄4 NPT ext
7
⁄16 UNF ext
Cap
Industrial pack
30 pc
148B4230
SNV-ST
SNV-ST
7
⁄16UNF-1⁄4MPT
1
⁄4 NPT ext
7
⁄16 UNF ext
Cap
Multi pack
12 pc
148B4566
SNV-ST
SNV-ST
3
⁄8FPT-3⁄8MPT
3
⁄8 NPT ext
3
⁄8 NPT int
Cap
Multi pack
12 pc
148B3747
SNV-ST
SNV-ST
3
⁄8FPT-3⁄8MPT
3
⁄8 NPT ext
3
⁄8 NPT int
Cap
Industrial pack
30 pc
148B4181
SNV-ST
SNV-ST
3
⁄8FPT-3⁄8FPT
3
⁄8 NPT int
3
⁄8 NPT int
Cap
Industrial pack
30 pc
148B4225
SNV-ST
SNV-ST
3
⁄8FPT-1⁄2MPT
1
⁄2 NPT ext
3
⁄8 NPT int
Cap
Industrial pack
30 pc
148B4233
SNV-ST
SNV-ST
3
⁄8FPT-1⁄2MPT
1
⁄2 NPT ext
3
⁄8 NPT int
Cap
Multi pack
12 pc
148B4565
SNV-ST
SNV-ST
3
⁄8FPT-3⁄8FPT
3
⁄8 NPT int
3
⁄8 NPT int
Cap
Multi pack
12 pc
148B4572
SNV-ST
SNV-ST
1
⁄4FPT-1⁄4MPT
1
⁄4 NPT ext
1
⁄4 NPT int
Cap
Multi pack
12 pc
148B3746
SNV-ST
SNV-ST
1
⁄4FPT-1⁄4MPT
1
⁄4 NPT ext
1
⁄4 NPT int
Cap
Industrial pack
30 pc
148B4180
SNV-ST
SNV-ST
1
⁄4FPT-1⁄4FPT
1
⁄4 NPT int
1
⁄4 NPT int
Cap
Multi pack
12 pc
148B4568
SNV-ST
SNV-ST
1
⁄4FPT-1⁄4MPT
1
⁄4 NPT ext
1
⁄4 NPT int
Cap, Adapter for ICS
Multi pack
6 pc
148B4772
SNV-ST
SNV-ST
1
⁄2MPT-1⁄2MPT
1
⁄2 NPT ext
1
⁄2 NPT ext
Cap
Industrial pack
30 pc
148B4224
SNV-ST
SNV-ST
1
⁄2MPT-3⁄8FPT
3
⁄8 NPT int
1
⁄2 NPT ext
Cap
Industrial pack
30 pc
148B4226
SNV-ST
SNV-ST
1
⁄2MPT-1⁄2MPT
1
⁄2 NPT ext
1
⁄2 NPT ext
Cap
Multi pack
12 pc
148B4564
Type
Spec. Key
Bottom branch
Bottom branch
length
Side branch
Equipment
Packing format
Qty/
pack
Code no.
SNV-ST
SNV-ST
1
⁄4FPT-1⁄4MPT L100
1
⁄4 NPT ext
100 mm / 4 in
1
⁄4 NPT int
Cap
Industrial pack
20 pc
148B4232
SNV-ST
SNV-ST
1
⁄4FPT-1⁄4MPT L100
1
⁄4 NPT ext
100 mm / 4 in
1
⁄4 NPT int
Cap
Multi pack
6 pc
148B4567
SNV-ST
SNV-ST
1
⁄4FPT-W1⁄2 L100
Butt weld
1
⁄2 in
100 mm / 4 in
1
⁄4 NPT int
Handwheel
Industrial pack
30 pc
148B4408
SNV-ST
SNV-ST
1
⁄4FPT-W1⁄2 L100
Butt weld
1
⁄2 in ext
100 mm / 4 in
1
⁄4 NPT int
Cap
Industrial pack
20 pc
148B4495
Type
Spec. Key
Bottom branch
Bottom branch
length
Side branch
Equipment
Packing format
Qty/
pack
Code no.
SNV-ST
SNV-ST G
1
⁄2-W1⁄2 L50
Butt weld
1
⁄2 in
50 mm / 2 in
G
1
⁄2A
Cap
Industrial pack
30 pc
148B4218
SNV-ST
SNV-ST G
1
⁄2-W1⁄2 L50
Butt weld
1
⁄2 in
50 mm / 2 in
G
1
⁄2A
Cap
Multi pack
12 pc
148B4570
SNV-ST
SNV-ST G
1
⁄2-W1⁄2 L100
Butt weld
1
⁄2 in
100 mm / 4 in
G
1
⁄2A
Cap
Multi pack
6 pc
148B3769
SNV-ST
SNV-ST G
1
⁄2-W1⁄2 L100
Butt weld
1
⁄2 in
100 mm / 4 in
G
1
⁄2A
Cap
Industrial pack
30 pc
148B4211
SNV-ST
SNV-ST G
1
⁄2-W1⁄2 L125
Butt weld
1
⁄2 in
125 mm / 5 in
G
1
⁄2A
Cap
Industrial pack
30 pc
148B4219
Type
Spec. Key
Bottom branch
Bottom branch
length
Side branch
Equipment
Packing format
Qty/
pack
Code no.
SNV-ST
SNV-ST CD10-W
1
⁄2 L100
Butt weld
1
⁄2 in
100 mm / 4 in
Cutting ring 10 mm
Cap
Multi pack
6 pc
148B3768
SNV-ST
SNV-ST CD10-W
1
⁄2 L100
Butt weld
1
⁄2 in
100 mm / 4 in
Cutting ring 10 mm
Cap
Industrial pack
30 pc
148B4210
SNV-ST
SNV-ST CD10-CD10
Cutting ring 10 mm
Standard
Cutting ring 10 mm
Cap
Multi pack
12 pc
148B3740
SNV-ST
SNV-ST CD10-CD10
Cutting ring 10 mm
Standard
Cutting ring 10 mm
Cap
Industrial pack
30 pc
148B4177
Type
Spec. Key
Bottom
branch
Bottom branch
length
Side branch
Equipment
Packing format
Qty/
pack
Code no.
SNV-ST
SNV-ST G
1
⁄2-G1⁄2
G
1
⁄2A
Standard
G
1
⁄2A
Cap
Multi pack
12 pc
148B3745
SNV-ST
SNV-ST G
1
⁄2 MAN
G
1
⁄2A
Standard
G
1
⁄2A
Cap Manometer
conn.
Multi pack
6 pc
148B3778
Gauge valve, type SNV-ST and SNV-SS
Ordering
SNV Steel
Table 9: SNV-ST to ANSI/ASME B1.20.1, Standard branch, 52 bar MWP
Table 10: SNV-ST to ANSI/ASME B1.20.1, Extended branch, 52 bar MWP
Table 11: SNV-ST to EN 10220, Extended branch, 52 bar MWP
Table 12: SNV-ST to DIN 3861, Standard & extended branch, 52 bar MWP
Table 13: SNV-ST to ISO 228-1, Standard, 52 bar MWP
© Danfoss | Climate Solutions | 2021.03 AI244986497087en-001002 | 9
Type
Spec. Key
Bottom branch
Side branch
Equipment
Packing format
Qty/pack
Code no.
SNV-ST
SNV-ST Rc
3
⁄8-R3⁄8
R
3
⁄8 ext
Rc
3
⁄8 int
Cap
Industrial pack
30 pc
148B4227
SNV-ST
SNV-ST Rc
1
⁄4-R3⁄8
R
3
⁄8 ext
Rc
1
⁄4 int
Cap
Industrial pack
30 pc
148B4228
SNV-ST
SNV-ST Rc
1
⁄4-R1⁄4
R
1
⁄4 ext
Rc
1
⁄4 int
Cap
Industrial pack
30 pc
148B4229
Type
Spec. Key
Bottom branch
Bottom branch length
Side branch
Equipment
Packing for‐
mat
Qty/
pack
Code no.
SNV-ST
SNV-ST CD10-CD10 65 bar
Cutting ring 10 mm
Standard
Cutting ring 10
mm
Cap
Multi pack
12 pc
148B6400
SNV-ST
SNV-ST CD10-W
1
⁄2 L100
Butt weld 1/2 in
100 mm / 4 in
Cutting ring 10
mm
Cap
Industrial pack
30 pc
148B4723
Type
Spec. Key
Bottom branch
Side branch
Equipment
Packing format
Qty/pack
Code no.
SNV-SS
SNV-SS
3
⁄8FPT-3⁄8MPT
3
⁄8 NPT ext
3
⁄8 NPT int
Cap
Multi pack
6 pc
148B3750
SNV-SS
SNV-SS
1
⁄4FPT-1⁄4MPT
1
⁄4 NPT ext
1
⁄4 NPT int
Cap
Multi pack
6 pc
148B4771
Type
Spec. Key
Bottom branch
Bottom branch length
Side branch
Equipment
Packing format
Qty/
pack
Code no.
SNV-SS
SNV-SS G
1
⁄2-W1⁄2 L50 65 bar
Butt weld
1
⁄2 in
50 mm / 2 in
G
1
⁄2A
Cap
Multi pack
6 pc
148B4581
SNV-SS
SNV-SS G
1
⁄2-W1⁄2 L150 65 bar
Butt weld
1
⁄2 in
150 mm / 6 in
G
1
⁄2A
Cap
Multi pack
12 pc
148B4582
SNV-SS
SNV-SS G
1
⁄2-W1⁄2 L50 65 bar
Butt weld
1
⁄2 in
50 mm / 2 in
G
1
⁄2A
Cap
Multi pack
30 pc
148B4584
SNV-SS
SNV-SS G
1
⁄2-W1⁄2 L50 65 bar
Butt weld
1
⁄2 in
150 mm / 6 in
G
1
⁄2A
Cap
Multi pack
30 pc
148B4585
Type
Spec. Key
Bottom branch
Side branch
Equipment
Packing format
Qty/pack
Code no.
SNV-SS
SNV-SS G
1
⁄2 MAN
G
1
⁄2A
G
1
⁄2A
Cap Manometer conn
Multi pack
6 pc
148B6545
Type
Connection type
Quantity
Code no.
Weld nipple incl. union nut and O-ring
CD 10
1 pc.
148B3729
Blind nut incl. gasket
Blind nut SS incl. gasket
G 1/2
1 pc.
148H3450
148B4317
CD 6 Cutting ring + union nut
CD 6
1 pc.
148B4182
60 pcs.
148B4217
CD 10 Cutting ring + union nut
CD 10
1 pc.
148B4183
60 pcs.
148B4186
Welding nipple (Al gaskets included)
G½ - ND6
2 pcs.
148B4184
Gauge valve, type SNV-ST and SNV-SS
Table 14: SNV-ST to ISO 7-1, Standard branch, 52 bar MWP
Table 15: SNV-ST to DIN 3901, Standard & extended branch, 65 bar MWP
SNV Stainless steel
Table 16: SNV-SS to ANSI/ASME B1.20.1, Standard branch, 52 bar MWP
Table 17: SNV-SS to EN 10220, Extended branch, 65 bar MWP
Table 18: SNV-SS to ISO 228-1, Standard branch, 52 bar MWP
Pack size denitions
• Single pack contains 1 item
• Multipack contains several items, individually packed. Each individual package includes all relevant
documentation
• Industrial pack contains several items that are not individually packed. Industrial packages cannot be broken
down, and will only contain documentation on pack level, not on item level
Accessories
© Danfoss | Climate Solutions | 2021.03 AI244986497087en-001002 | 10
Type
Connection type
Quantity
Code no.
Adapter kit (Al gaskets included)
1/4” FPT - ½” G
1 pc.
148B3860
Adapter kit (Al gaskets included)
3/8” G - ½” G
1 pc.
148B3861
Seal cap & gasket - SNV-ST
Seal cap & gasket - SNV-SS
1 pc.
148B4576
148B3269
Plug and gasket
G½” (external)
1 pc.
148H3462
Gauge valve, type SNV-ST and SNV-SS
© Danfoss | Climate Solutions | 2021.03 AI244986497087en-001002 | 11
Type
File name
Document type
Document topic
Approval authority
SNV-ST
UA.089.D.00188-17
UA Declaration
PED
LLC CDC EURO TYSK
UA.TR-089.0993-17
Pressure - Safety Certicate
PED
LLC CDC EURO TYSK
033F0691.AD
Manufacturers Declaration
RoHS
Danfoss
033F0686.AG
Manufacturers Declaration
PED
Danfoss
CRN.0C18678.513467890YTN
Pressure - Safety Certicate
CRN
TSSA
19.10048.266
Marine - Safety Certicate
-
RMRS
SNV-SS
033F0691.AD
Manufacturers Declaration
RoHS
Danfoss
033F0686.AG
Manufacturers Declaration
PED
Danfoss
CRN.0C18678.513467890YTN
Pressure - Safety Certicate
CRN
TSSA
19.10048.266
Marine - Safety Certicate
-
RMRS
Gauge valve, type SNV-ST and SNV-SS
Certicates, declarations, and approvals
The list contains all certicates, declarations, and approvals for this product type. Individual code number may have
some or all of these approvals, and certain local approvals may not appear on the list.
Some approvals may change over time. You can check the most current status at danfoss.com or contact your local
Danfoss representative if you have any questions.
© Danfoss | Climate Solutions | 2021.03 AI244986497087en-001002 | 12
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Start searching now at www.danfoss.com/en/service-and-support/documentation.
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© Danfoss | Climate Solutions | 2021.03 AI244986497087en-001002 | 13
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