Danfoss Electronics SGP X, SGP I, SGP N, SGP RX, SGP RI Data Sheet

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Data sheet

Sight glass (High pressure) Type SGP X, SGP I, SGP N, SGP RX, SGP RI and SGP RN

SGP are sight glasses for high pressure applications (Max. Working Pressure 52 bar / 754 psig).

SGP is available with ﬂare, solder and socket connections, and with and without moisture indicators.

SGP I / SGP N and SGP RI / SGP RN are equipped with sensitive indicators that reﬂects a color, which depends on the moisture content in the refrigerant.

SGP X and SGP RX, without moisture indicator, are mainly used to indicate the condition of the refrigerant in the liquid line or the ﬂow in the oil return line from the oil separator.

Features

Type SGP X / SGP RX (without indicator)

y Indicates lack of subcooling y Indicates refrigerant deﬁciency y Indicates liquid level in receiver y Indicates oil level in compressor y Flare/ﬂare, solder/solder connection or

socket type

Type SGP I / SGP RI (with I type indicator) Type SGP N / SGP RN (with N type indicator)

-Indicates too high moisture content in the refrigeration system by colors

-Indicates lack of subcooling

-Indicates refrigerant deﬁciency

-Flare/ﬂare, solder/solder connection or socket type

y UL approval, conforms to Pressure Equipment

Directive 2014/68/EU y Large viewing window for better visibility y Provides accurate identiﬁcation of system

conditions y Easy to indicate liquid and oil level by ﬂoat ball

of socket type y Good corrosion resistance by 2000 hours salt

spray for brass material according to ASTM

B117 requirement

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Data sheet High pressure sight glass, SGP X, SGP I, SGP N, SGP RX, SGP RI and SGP RN

Technical data

Approvals

Available types

Media temperature: -50 – 80 °C / -58 – 175 °F Max. working pressure (PS / MWP): 52 bar / 754 psig Refrigerant oil: All mineral oils and ester oils

Solder version ODF x ODF Flare External x External Flare Internal x External

SGP X

without indicator

Solder version ODF x ODM Solder version ODF x ODF Flare External x External

SGP I and SGP N

with indicator

SGP X

without indicator

SGP I and SGP N

with indicator

SGP I and SGP N

with indicator

SGP I and SGP N

with indicator

Choice of sight glass moisture indication

REACH requirements

Socket Socket Saddle

SGP RX

without indicator

Before choosing a sight glass with moisture indicator, the following should be considered:

y type of refrigerant y water solubility of refrigerant y the level on which a danger signal is required

SGP RI and SGP RN

with indicator

The colour on the sight glass indicator depends on the moisture content of the refrigerant.

The values under “green / dry” are to be considered as perfect condition meaning full protection against harmful eﬀects from moisture.

SGS

In other words, the ﬁlter drier is working

Be aware that polyester oil for refrigerants like,

perfectly.

e.g. R134a, R404A, R407C react with water in a hydrolysis generating acid and alcohol.

If the green color starts to fade, the color change has begun and the indicator should therefore

The recommended levels of moisture content are usually between 30 and 75 ppm, where hermetic compressors only tolerate very low moisture content, while semi-hermetic and other

be watched more carefully. If the color changes to yellow it is a clear signal, that the capacity of the ﬁlter drier is exceeded and must be replaced immediately.

compressors normally tolerate higher moisture contents in the refrigerant.

Note: When storing, transporting or installing the Sight Glass, avoid the chemical indicator to get in contact with non-refrigerant medium or ﬂuid (like water, oil, ect.)

All Danfoss products fulﬁll the requirements in REACH. One of the obligations in REACH is to inform customers about presence of Candidate list substances if any, we hereby inform you about one substance on the candidate list: A moisture indicator in a sight glass contains a paper which is impregnated with Cobalt Dichloride (CAS no: 7646-79-9) in a concentration above 0.1% w/w. If the valve has been damaged or dismantled:

- Avoid skin contact with the paper

- Do not inhale the dust from the paper

- The paper must be disposed as hazardous waste

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Data sheet High pressure sight glass, SGP X, SGP I, SGP N, SGP RX, SGP RI and SGP RN

I type indicator for R290, R600, R600a and R1234yf

Moisture content ppm = parts per million

I type indicator

Media temperature 25 °C / 77 °F Media temperature 43 °C / 109 °F

Green /

dry

R290 < 25 25 – 50 > 50 < 50 50 – 100 > 100

R600 < 10 10 – 20 > 20 < 28 28 – 55 > 55

R600a < 11 11 – 22 > 22 < 30 30 – 60 > 60

R1234yf < 93 93 – 130 > 130 < 130 130 – 247 > 247

N type indicator for R134a, R22, R32, R404A, R407A, R407C, R407F, R407H, R410A, R448A, R449A, R450A, R452A, R452B, R454B, R454C, R455A, R463A, R507, R513A, R515B, R1233zd(E), R1234ze(E), R1270, R744 (CO2 )

Media temperature 25 °C / 77 °F Media temperature 43 °C / 109 °F

Green /

dry

R134a < 30 30 – 100 > 100 < 45 45 – 170 > 170

R22 < 30 30 – 120 > 120 < 50 50 – 200 > 200

R32 < 64 64 – 289 > 289 < 116 116 – 459 > 459

R404A < 20 20 – 70 > 70 < 25 25 – 100 > 100

R407A < 29 29 – 115 > 115 < 48 48 – 192 > 192

R407C < 30 30 – 140 > 140 < 60 60 – 225 > 225

R407F < 30 30 – 168 > 168 < 60 60 – 240 > 240

R407H < 35 35-180 > 180 < 60 60-365 > 365

R410A < 66 66 – 266 > 266 < 135 135 – 540 > 540

R448A < 28 28 – 110 > 110 < 70 70 – 227 > 227

R449A < 29 29 – 105 > 105 < 53 53 – 200 > 200

R450A < 23 23 – 148 > 148 < 46 46 – 245 > 245

R452A < 20 20 – 79 > 79 < 30 30 – 143 > 143

R452B < 70 70 – 260 > 260 < 144 144 – 260 > 260

R454B < 29 29 – 161 > 161 < 58 58 – 250 > 250

R454C < 25 25-115 > 115 < 30 30-190 > 190

R455A < 20 20-95 > 95 < 25 25-145 > 145

R463A < 55 55-280 > 280 < 95 95-435 > 435

R507 < 15 15 – 60 > 60 < 30 30 – 110 > 110

R513A < 22 22 – 75 > 75 < 22 22 – 123 > 123

R515B < 20 20-95 > 95 < 20 20-140 > 140

R1233zd(E) < 18 18-90 > 90 < 20 20-150 > 150

R1234ze(E) < 26 26 – 132 > 132 < 28 28 – 165 > 165

R1270 < 16 16 – 62 > 62 < 29 29 – 115 > 115

R744 (CO2 ) < 80 80 – 195 > 195 - - -

Notes:

• For a fully updated list of approved refrigerants, visit http://store.danfoss.com/ and search for individual code numbers, where refrigerants are listed as part of product details.

• Only solder versions are allowed for ﬂammable refrigerant.

This product is approved for R290, R32, R452B, R454B, R454C, R455A, R600, R600a,R1234yf and R1270 by ignition source assessment in accordance to standard EN13463-1.

• For colours reﬂecting moisture values of other refrigerants and other media temperature, please

contact Danfoss.

• SGP with indicator is not suitable for oil application. For detailed information please contact

Danfoss.

• Socket type can be used with refrigerant R744 (CO2 )except for the version with ﬂoat ball.

• Socket type can be used with refrigerant R1233zd(E) except for the version with gasket.

• For the Max. media temperature which is above 55 °C /131 °F for socket type with ﬂoat ball,

please consult Danfoss.

Intermed.

color

Moisture content ppm = parts per million

Intermed.

color

Yellow /

wet

N type indicator

Yellow /

wet

Green /

dry

Green /

dry

Intermed.

color

Intermed.

color

Yellow /

wet

Yellow /

wet

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