Sight glass (igh pressure) 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 Solder versions are compliant with ATEX hazard zone 2 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 SGP I / SGP RI (with I indicator) y For R22, R290, R600, R600a, R234yf refrigerants y Indicates too high moisture content in the refrigeration system y Indicates lack of subcooling y Indicates refrigerant deficiency y Flare/flare, solder/solder connection or socket SGP N / SGP RN (with N indicator) y For R22, R32, R34a, R404A, R407C, R507, R40A, R270, R407A, R407F, R448A, R449A, R450A, R452A, R452B, R454B, R53A, R234ze, R744 (CO 2 ) refrigerants y Indicates too high moisture content in the refrigeration system y Indicates lack of subcooling y Indicates refrigerant deficiency y Flare/flare, solder/solder connection or socket KRCC.P.EK0.6.02
igh pressure sight glass, SGP X, SGP I, SGP N, SGP RX, SGP RI and SGP RN Technical data Media temperature: -50 80 C / -58 75 F Max. working pressure (PS / MWP): 52 bar / 754 psi Refrigerant oil: All mineral oils and ester oils Approvals Available s Solder version OF x OF Flare External x External Flare Internal x External SGP X without indicator SGP X without indicator SGP I and SGP N Solder version OF x OM Solder version OF x OF Flare External x External SGP I and SGP N SGP I and SGP N SGP I and SGP N Socket Socket Saddle SGP RX without indicator SGP RI and SGP RN SGS Choice of sight glass moisture indication Before choosing a sight glass with moisture indicator, the following should be considered: y of refrigerant y water solubility of refrigerant y the level on which a danger signal is required Be aware that polyester oil for refrigerants like, e.g. R34a, R404A, R407C react with water in a hydrolysis generating acid and alcohol. 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 compressors normally tolerate higher moisture contents in the refrigerant. 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. In other words, the filter drier is working perfectly. If the green color starts to fade, the color change has begun and the indicator should therefore 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. 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.) REAC requirements All anfoss products fulfill the requirements in REAC. One of the obligations in REAC 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 ichloride (CAS no: 7646-79-9) in a concentration above 0.% w/w. If the valve has been damaged or dismantled: - Avoid skin contact with the paper - o not inhale the dust from the paper - The paper must be disposed as hazardous waste KRCC.P.EK0.6.02 2
igh pressure sight glass, SGP X, SGP I, SGP N, SGP RX, SGP RI and SGP RN SGP I for R22, R290, R600, R600a and R234yf Moisture content ppm = parts per million SGP I / SGP RI Media temperature 25 C / 77 F Media temperature 43 C / 09 F Green / dry Intermed. color Yellow / wet Green / dry Intermed. color Yellow / wet R22 < 50 50 300 > 300 < 250 250 500 > 500 R290 < 25 25 50 > 50 < 50 50 00 > 00 R600 < 0 0 20 > 20 < 28 28 55 > 55 R600a < 22 > 22 < 30 30 60 > 60 R234yf < 93 93 30 > 30 < 30 30 247 > 247 SGP N for R22, R32, R34a, R404A, R407C, R507, R40A, R270, R407A, R407F, R448A, R449A, R450A, R452A, R452B, R454B, R53A, R234ze, R744 (CO 2 ) Moisture content ppm = parts per million SGP N / SGP RN Media temperature 25 C / 77 F Media temperature 43 C / 09 F Green / dry Intermed. color Yellow / wet Green / dry Intermed. color Yellow / wet R22 < 30 30 20 > 20 < 50 50 200 > 200 R32 < 64 64 289 > 289 < 6 6 459 > 459 R34a < 30 30 00 > 00 < 45 45 70 > 70 R404A < 20 20 70 > 70 < 25 25 00 > 00 R407C < 30 30 40 > 40 < 60 60 225 > 225 R507 < 5 5 60 > 60 < 30 30 0 > 0 R40A < 66 66 266 > 266 < 35 35 540 > 540 R270 < 6 6 62 > 62 < 29 29 5 > 5 R407A < 29 29 5 > 5 < 48 48 92 > 92 R407F < 30 30 68 > 68 < 60 60 240 > 240 R448A < 28 28 0 > 0 < 70 70 227 > 227 R449A < 29 29 05 > 05 < 53 53 200 > 200 R450A < 23 23 48 > 48 < 46 46 245 > 245 R452A < 20 20 79 > 79 < 30 30 43 > 43 R452B < 70 70 260 > 260 < 44 44 260 > 260 R454B < 29 29 6 > 6 < 58 58 250 > 250 R53A < 22 22 75 > 75 < 22 22 23 > 23 R234ze < 26 26 32 > 32 < 28 28 65 > 65 Notes: For a fully updated list of approved refrigerants, visit www.products.danfoss.com and search for individual code numbers, where refrigerants are listed as part of product specifications. Only solder versions are allowed for flammable refrigerant. This product is approved for R290, R600, R600a and R270 by ignition source assessment in accordance to standard EN3463-. For colours reflecting moisture values of other refrigerants, please contact anfoss. For the application use with R744 as part of a secondary loop or cascade:. The design pressure of the refrigerant containing component is not less than the design pressure of the associated components. 2. The component is not provided with any pressure relief or pressure regulating relief valve and that a sufficient number of valves having capacity deemed adequate shall be field-installed on the refrigeration system. 3. When the refrigeration system is de-energized, venting of R744 may occur through the pressure regulating relief valves, and may need to be recharged, but the valve should not be defeated or bypassed. 4. A sufficient number of pressure relief and pressure regulating valves may need to be provided based upon system capacity and located such that no stop valve is provided between the relief valve and the parts or section of the system being protected. KRCC.P.EK0.6.02 3
igh pressure sight glass, SGP X, SGP I, SGP N, SGP RX, SGP RI and SGP RN Ordering SGP X without indicator [inch] [mm] SGP 0 X Flare ext. ext. 3 /8 3 /8 0 0 040080 SGP 2s X Solder OF x OF /2 /2 040086 SGP 6s X Solder OF x OF 5 /8 5 /8 6 6 040087 SGP 22s X Solder OF x OF 7 /8 7 /8 22 22 04207 SGP I with I indicator [inch] [mm] SGP 6 I Flare ext. ext. /4 /4 6 6 040007 SGP 0 I Flare ext. ext. 3 /8 3 /8 0 0 040008 SGP 2 I Flare ext. ext. /2 /2 2 2 040009 SGP 6 I Flare ext. ext. 5 /8 5 /8 6 6 040024 SGP 9 I Flare ext. ext. 3 /4 3 /4 9 9 040028 SGP 6 I Flare int. ext. ) /4 /4 6 6 04002 SGP 0 I Flare int. ext. ) 3 /8 3 /8 0 0 040022 SGP 2 I Flare int. ext. ) /2 /2 2 2 040025 SGP 6 I Flare int. ext. ) 5 /8 5 /8 6 6 040026 SGP 9 I Flare int. ext. ) 3 /4 3 /4 9 9 040043 SGP 6s I OF OF solder /4 /4 040034 OF OF solder 6 6 040040 SGP 0s I OF OF solder 3 /8 3 /8 040035 OF OF solder 0 0 04004 SGP 2s I OF OF solder /2 /2 040036 OF OF solder 2 2 040042 SGP 6s I OF OF solder 5 /8 5 /8 6 6 040044 SGP 8s I OF OF solder 8 8 040045 SGP 9s I OF OF solder 3 /4 3 /4 9 9 040047 SGP 22s I OF OF solder 7 /8 7 /8 22 22 040039 SGP 6s I OF OM solder /4 /4 04025 SGP 0s I OF OM solder 3 /8 3 /8 04026 SGP 2s I OF OM solder /2 /2 04027 SGP 6s I OF OM solder 5 /8 5 /8 6 6 04028 SGP 22s I OF OM solder 7 /8 7 /8 22 22 04030 ) Can be screwed directly into the filter drier Notes: Only solder versions are allowed for flammable refrigerants. This product is approved for R290, R600, R600a and R270 by ignition source assessment in accordance to standard EN3463-. KRCC.P.EK0.6.02 4
igh pressure sight glass, SGP X, SGP I, SGP N, SGP RX, SGP RI and SGP RN Ordering SGP N with N indicator [inch] [mm] SGP 6 N Flare ext. ext. /4 /4 6 6 0406 SGP 0 N Flare ext. ext. 3 /8 3 /8 0 0 04062 SGP 2 N Flare ext. ext. /2 /2 2 2 04063 SGP 6 N Flare ext. ext. 5 /8 5 /8 6 6 04065 SGP 9 N Flare ext. ext. 3 /4 3 /4 9 9 04066 SGP 6 N Flare int. ext. ) /4 /4 6 6 0407 SGP 0 N Flare int. ext. ) 3 /8 3 /8 0 0 04072 SGP 2 N Flare int. ext. ) /2 /2 2 2 04073 SGP 6 N Flare int. ext. ) 5 /8 5 /8 6 6 04074 SGP 9 N Flare int. ext. ) 3 /4 3 /4 9 9 04075 SGP 6s N OF OF solder /4 /4 0408 OF OF solder 6 6 0409 SGP 0s N OF OF solder 3 /8 3 /8 04082 OF OF solder 0 0 04092 SGP 2s N OF OF solder /2 /2 04083 OF OF solder 2 2 04093 SGP 6s N OF OF solder 5 /8 5 /8 6 6 04084 SGP 8s N OF OF solder 8 8 04095 SGP 9s N OF OF solder 3 /4 3 /4 9 9 04085 SGP 22s N OF OF solder 7 /8 7 /8 22 22 04086 SGP 22s N 2 ) OF OF solder /8 /8 04087 SGP 6s N OF OM solder /4 /4 04020 SGP 0s N OF OM solder 3 /8 3 /8 040202 SGP 2s N OF OM solder /2 /2 040203 SGP 6s N OF OM solder 5 /8 5 /8 6 6 040204 SGP 22s N OF OM solder 7 /8 7 /8 22 22 040206 ) Can be screwed directly into the filter drier 2 ) Oversize connections Notes: Only solder versions are allowed for flammable refrigerants. This product is approved for R290, R600, R600a and R270 by ignition source assessment in accordance to standard EN3463-. KRCC.P.EK0.6.02 5
igh pressure sight glass, SGP X, SGP I, SGP N, SGP RX, SGP RI and SGP RN Ordering No indicator Indicator Valve Indicator Floating ball [pc] O-ring No G thread G 3 /4 A ) No 040004 SGP 3/4 RX No NPT 3 /4 4 NPT 2) No 040005 SGP /2 RX No NPT /2 4 NPT 2) 3 No 040002 SGP /2 RI I NPT /2 4 NPT 2 ) 3 No 0403 SGP 24 RI I M thread M24 Yes 0454 SGP /2 RN N NPT /2 4 NPT 2 ) 3 No 040006 SGP 24 RN N M thread M24 Yes 0455 SGP 20 RN N M thread M20.5 No 0460 Saddle ) ISO 228-2 ) ANSI/ASME.20. Valve SGS Tube connection [in] Industrial pack [pcs] Tube fitting M20.5 /8 80 04-07 Tube fitting M20.5 3 /8 80 04-074 Tube fitting M24 7 /8 80 04-059 Tube fitting M24 /8 80 04-056 Tube fitting M24 3 /8 80 04-057 Tube fitting M24 5 /8 80 04-058 Tube fitting M24 2 /8 80 04-067 KRCC.P.EK0.6.02 6
igh pressure sight glass, SGP X, SGP I, SGP N, SGP RX, SGP RI and SGP RN imensions and weights SI units SGP flare, int. ext. SGP solder OF OF SGP flare, ext. ext. SGP solder OF OM SI Units B ø Net weight [mm] [mm] [mm] [mm] [mm] [mm] [Kg] SGP 6 N, SGP 6 I 67 25 5 4 27 0. SGP 0 N, SGP 0 I 82 29 7 9 32 0.2 Flare SGP 2 N, SGP 2 I 88 3 9 22 32 0.3 ext. x ext. SGP 6 N, SGP 6 I 04 38 22 27 32 0.4 SGP 9 N, SGP 9I 0 42 23 32 37 0.6 SGP 6 N, SGP 6 I 46 25 5 6 27 0. SGP 0 N, SGP 0 I 57 29 7 22 32 0.2 Flare SGP 2 N, SGP 2 I 59 3 9 24 32 0.2 int. ext. SGP 6 N, SGP 6 I 7 38 22 27 32 0.4 SGP 9 N, SGP 9 I 75 42 23 32 37 0.5 SGP 6s N, SGP 6s I 0 7 24 5 4 27 0. SGP 0s N, SGP 0s I 9 9 24 5 4 27 0. SGP 2s N, SGP 2s I 46 0 29 7 9 32 0.2 SGP 6s N, SGP 6s I Solder 46 2 3 9 22 32 0.2 SGP 8s N, SGP 8s I OF OF 73 4 38 22 27 32 0.3 SGP 9s N, SGP 9s I 73 4 38 22 27 32 0.3 SGP 22s N, SGP 22s I 73 7 39 23 27 32 0.3 SGP 22s N, SGP 22s I ) 73 22 39 23 27 32 0.3 SGP 6s N, SGP 6s I 0 7 24 5 4 27 0. SGP 0s N, SGP 0s I 9 9 24 5 4 27 0. Solder SGP 2s N, SGP 2s I 46 0 29 7 9 32 0.2 OF OM SGP 6s N, SGP 6S I 46 2 3 9 22 32 0.2 SGP 22s N, SGP 22s I 73 7 38 22 27 32 0.3 ) Oversize connections KRCC.P.EK0.6.02 7
igh pressure sight glass, SGP X, SGP I, SGP N, SGP RX, SGP RI and SGP RN imensions and weights US units SGP flare, int. ext. SGP solder OF OF SGP flare, ext. ext. SGP solder OF OM US Units B ø Net weight [in] [in] [in] [in] [in] [in] [lbs] 2.64 0.98 0.59 0.55.06 0.22 SGP 6 N, SGP 6 I SGP 0 N, SGP 0 I 3.23.4 0.67 0.75.26 0.44 Flare SGP 2 N, SGP 2 I 3.46.22 0.75 0.87.26 0.66 ext. x ext. SGP 6 N, SGP 6 I 4.09.50 0.87.06.26 0.88 SGP 9 N, SGP 9I 4.33.65 0.9.26.46.32 SGP 6 N, SGP 6 I.8 0.98 0.59 0.63.06 0.22 SGP 0 N, SGP 0 I 2.24.4 0.67 0.87.26 0.44 Flare SGP 2 N, SGP 2 I 2.32.22 0.75 0.94.26 0.44 int. ext. SGP 6 N, SGP 6 I 2.80.50 0.87.06.26 0.88 SGP 9 N, SGP 9 I 2.95.65 0.9.26.46.0 SGP 6s N, SGP 6s I 3.98 0.28 0.94 0.59 0.55.06 0.22 SGP 0s N, SGP 0s I 4.69 0.35 0.94 0.59 0.55.06 0.22 SGP 2s N, SGP 2s I 5.75 0.39.4 0.67 0.75.26 0.44 SGP 6s N, SGP 6s I Solder 5.75 0.47.22 0.75 0.87.26 0.44 SGP 8s N, SGP 8s I OF OF 6.8 0.55.50 0.87.06.26 0.66 SGP 9s N, SGP 9s I 6.8 0.55.50 0.87.06.26 0.66 SGP 22s N, SGP 22s I 6.8 0.67.54 0.9.06.26 0.66 SGP 22s N, SGP 22s I ) 6.8 0.87.54 0.9.06.26 0.66 SGP 6s N, SGP 6s I 3.98 0.28 0.94 0.59 0.55.06 0.22 SGP 0s N, SGP 0s I 4.69 0.35 0.94 0.59 0.55.06 0.22 Solder SGP 2s N, SGP 2s I 5.75 0.39.4 0.67 0.75.26 0.44 OF OM SGP 6s N, SGP 6S I 5.75 0.47.22 0.75 0.87.26 0.44 SGP 22s N, SGP 22s I 6.8 0.67.50 0.87.06.26 0.66 ) Oversize connections KRCC.P.EK0.6.02 8
imensions and weights SGP socket Net. weight [mm] [mm] [mm] [kg] SGP 3 4 RX G thread G 3 / 4 A ) 24 0 32 0. SGP 2 RX NPT / 2 4 NPT 2 ) 3 8 27 0. SGP 3 4 RX NPT 3/ 4 4 NPT 2 ) 32 8 32 0. SGP 2 RN / SGP 2 RI NPT / 2 4 NPT 2 ) 3 8 27 0. SGP 24 RN / SGP 24 RI M thread M24 29 5 32 0. SGP 20 RN M thread M20 x.5 26 3 27 0. Net. weight [in] [in] [in] [lbs] SGP 3 4 RX G thread G 3 / 4 A ) 0.94 0.39.26 0.22 SGP 2 RX NPT / 2 4 NPT 2 ).22 0.7.06 0.22 SGP 3 4 RX NPT 3/ 4 4 NPT 2 ).26 0.7.26 0.22 SGP 2 RN / SGP 2 RI NPT / 2 4 NPT 2 ).22 0.7.06 0.22 SGP 24 RN / SGP 24 RI M thread M24.4 0.59.26 0.22 SGP 20 RN M thread M20 x.5.02 0.5.06 0.22 KRCC.P.EK0.6.02 9