Danfoss SNV-ST, SNV-SS Data sheet
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
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