SG / SGP
Danfoss sight glasses, type SG/SGP, are installed after the filter drier in liquid line of refrigerating systems and in the compressor by using socket type, in order to observe property changes of the refrigerant (liquid/vapor) and to indicate the moisture level by colors.
Features and benefits
- Available with flare, solder and socket connections with and without moisture indicators
- Large viewing window for better visibility
- High precision color indicator
- Provides accurate identification of system conditions
- Easy to indicate liquid and oil level by float ball of socket type
- Good corrosion resistance by 2000 hours salt spray for brass material according to ASTM B117 requirement
- UL approval, conforms to Pressure Equipment Directive 2014/68/EU
Cold Rooms
SG / SGP sight glasses are used as visual indicators in refrigeration systems to help installers and service technicians observe refrigerant condition and, depending on the version, moisture level, liquid level, or oil level. In cold room systems, this makes them relevant as a practical checkpoint in the refrigeration circuit, especially in the liquid line between the filter drier and the expansion valve. The same range is also used in broader applications such as chillers, heat pumps, and transport refrigeration.