Danfoss produces and delivers a complete range of sight glasses for all applications. Available in solder, flare, face seal or socket versions, they include types for monitoring of flow, moisture and liquid level. The Danfoss sight glasses indicators are optimized for the relevant refrigerants in the market.

SGP N / SGP I / SGP X sight glasses, for high pressure refrigerantsSGP is a series of sight glasses for high pressure applications (Max Working Pressure 52 bar/754 psig). SGP is available in versions optimized for refrigerants with mineral oil e.g. HCFC, and in versions optimized for non-flammable HFC refrigerants. SGP is available with flare, solder and socket connections, and with and without moisture indicators.

SGR / SGI / SGN sight glasses, for low pressure refrigerantsFor low pressure applications (Max Working Pressure 35 bar/508 psig), Danfoss produces and markets sight glasses types SGR, SGI and SGN. They are available in versions optimized for refrigerants with mineral oil, e.g. HCFC, and in versions optimized for non-flammable HFC refrigerants, with flare, solder, face seal or socket connections, and with and without moisture indicators.

Saddles for SGR/SGP socket type sight glassesSaddle for soldering onto refrigerant system tubing. The SGR/SGRN/SGRI/SGRH is screwed into the saddle. Available for most tubing sizes.