Danfoss OFC Data sheet
Data Sheet
Check and Stop valve
Type OFC
For Oil Free Refrigerants, Fits Turbocor TTS/TGS/TTH/TGH Compressors
OFC type check and stop valve are designed for delivering a discharge solution that improves performance and reliability of oil-free centrifugal compressors with magnetic bearings by incorporating a damped check valve, while reliably and efficiently incorporating stop and diffuser functions.
Features
• Nozzle check valve closes quickly if backƒow
• PTFE protects against reverse refrigerant migration; compatible with oil-free applications
• Gas damper and special opening characteristic prevents from violent movements in surge conditions
• Damped nozzle check valve reduces chattering noises
• Decoupled stop function from check function allows faster access and improves reliability of sealing
• Lock ring design prevents from unintentional closing of the valve
• Built-in sight glass gives direct visibility to proper valve functioning and refrigerant ƒow
• Built-in pressure port provides connection to high pressure cut out
• Built-in staging port
• Optimized ƒow path enhances ƒow capacity with lower pressure drop
• Bolt on to all TTS/TGS/TTH/TGH compressor discharge ports
• Multiple orientations possible
AI391918642123en-000101
Check and Stop valve, Type OFC
Functions
The OFC is intended for use on Turbocor compressors up to size TTS700 as a combined diffuser elbow, shut off valve and check valve with integrated staging port and pressure port (Schrader valve). The device contains:
Integrated stop function Damped check valve function Integrated diffuser elbow Integrated staging port
Table 1: Used for Danfoss Turbocor® Compressors:
Image |
Compressor type |
Refrigerant |
|
TTS300: 60-90 TR |
|
|
TTS350: 70-120TR |
|
|
TTS400: 90-150 TR |
|
|
TTS700: 130-200 TR |
|
|
|
R134a R513A |
|
TTH375: 75-115 TR |
|
|
TGS230: 40-70 TR |
|
|
TGS310: 60-90 TR |
|
|
TGS390: 70-120 TR |
|
|
TGS490: 110-140 TR |
|
|
TTGS520: 90-150 R |
R1234ze R515B |
|
TGH285: 70-90 TR |
|
|
|
|
Figure 1: Fit on compressor
© Danfoss | Climate Solutions | 2021.09 |
AI391918642123en-000101 | 2 |
Check and Stop valve, Type OFC
Applications
Typical applications for OFC valves are:
Only for oil free system
•Air-Cooled Chiller
•Water-Cooled Chiller
•Water-to-Water Heat Pump
•Air-to-Water Heat Pump
Figure 2: Application Diagram
Discharge Port |
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Economizer |
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Motor Cooling |
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Port |
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Port |
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Suc!on |
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Port |
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Sight |
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||
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Glass |
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Filter/ |
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* |
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Drier |
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* |
Check |
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Valve |
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||
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Evaporator |
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* |
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Staging |
* |
||
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Valve |
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Load |
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Balancing |
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Valve |
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Condenser with |
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Subcooler |
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Expansion |
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Valve |
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Sight |
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Filter/ |
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* |
Drier |
||
Glass |
|||
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|||
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||
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DANFOSS |
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32Z8201 |
© Danfoss | Climate Solutions | 2021.09 |
AI391918642123en-000101 | 3 |
Check and Stop valve, Type OFC
Media
UL listed for R134a, R513A and R515B. CE approved for ƒuid group 2, including R1234ze(E)For other refrigerants, visit http://store.danfoss.com/ and search for individual code, where refrigerants are listed as part of product details.
Oil: OFC valve is designed for an oil-free environment
© Danfoss | Climate Solutions | 2021.09 |
AI391918642123en-000101 | 4 |
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