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 eciently incorporating stop and diuser functions.

Features

• Nozzle check valve closes quickly if backow

• 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 ow

• Built-in pressure port provides connection to high pressure cut out

• Built-in staging port

• Optimized ow path enhances ow capacity with lower pressure drop

• Bolt on to all TTS/TGS/TTH/TGH compressor discharge ports

• Multiple orientations possible

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Image

Compressor type

Refrigerant

TTS300: 60-90 TR

R134a R513A

TTS350: 70-120TR

TTS400: 90-150 TR

TTS700: 130-200 TR

TTH375: 75-115 TR

TGS230: 40-70 TR

R1234ze R515B

TGS310: 60-90 TR

TGS390: 70-120 TR

TGS490: 110-140 TR

TTGS520: 90-150 R

TGH285: 70-90 TR

Check and Stop valve, Type OFC

Functions

The OFC is intended for use on Turbocor compressors up to size TTS700 as a combined diuser elbow, shut o valve and check valve with integrated staging port and pressure port (Schrader valve). The device contains: Integrated stop function Damped check valve function Integrated diuser elbow Integrated staging port

Table 1: Used for Danfoss Turbocor® Compressors:

Figure 1: Fit on compressor

Motor Cooling

Port

Suc!on

Port

Economizer

Port

Discharge Port

*

Sight

Glass

Sight

Glass

Filter/

Drier

Filter/

Drier

Evaporator

Expansion

Valve

Expansion

Valve

Staging

Valve

Staging

Valve

Load

Balancing

Valve

Load

Balancing

Valve

**

Condenser with

Subcooler

Filter/

Drier

Filter/

Drier

Sight Glass

*

**

*

Check

Valve

Danfoss 32Z8201

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

Check and Stop valve, Type OFC

Media

UL listed for R134a, R513A and R515B. CE approved for uid 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