SIGHT GLASSES
- model :
- Sight Glasses
SGN sight glass is used on the liquid piping of the refrigeration and air conditioning unit to indicate the flow condition of the refrigerant, water cut of the refrigerant and lubricant oil flow condition of the oil return piping on the oil separator.
SGN sight glass is equipped with one moisture indicator, which wil change color to indicate the water cut in the refrigerant.
The modified PTFE sealing is used in SGN sight glass, which is applicable to various refrigerants and oils with perfect sealing performance.
The structure of the SGN sight glass is an explosion-proof press fit and the viewing glass is clear and safety.
Product Description
SGN sight glass is used on the liquid piping of the refrigeration and air conditioning unit to indicate the flow condition of the refrigerant, water cut of the refrigerant and lubricant oil flow condition of the oil return piping on the oil separator.
SGN sight glass is equipped with one moisture indicator, which wil change color to indicate the water cut in the refrigerant.
The modified PTFE sealing is used in SGN sight glass, which is applicable to various refrigerants and oils with perfect sealing performance.
The structure of the SGN sight glass is an explosion-proof press fit and the viewing glass is clear and safety.
Features
* Be applicable to HCFC/HFC refrigerants.
* Indicate high water cut in system if any.
* Indicate no overcooling in refrigerant liquid.
* Indicate insufficient charging of refrigerant if any.
* Both welded and threaded connections are available.
Technical Parameters :
Applicable Refrigerant : HCFC and HFC
Applicable Medium Temperature : -40C ~ +80C
Max. Operating Pressure : 3,5MPa
Max. Allowable Pressure : 4,5MPa
Yearly Leakage of Refrigerant : 2g R22/a
Correlation between Water Cut and Color
| Water Cut (ppm) | ||||||
| 25ºC | 43ºC | |||||
| Green/DRY | Medium Color | Yellow/WET | Green/DRY | Medium Color | Yellow/WET | |
| R22 / R502 | <30 | 30 ~ 126 | >120 | <50 | 50 ~ 200 | >200 |
| HFC – 134a | <30 | 30 ~ 100 | >100 | <45 | 45 ~ 170 | >170 |
| R404a | <20 | 20 ~ 70 | >70 | <25 | 25 ~ 100 | >100 |
| R407c | <30 | 30 ~ 140 | >140 | <60 | 60 ~ 225 | >225 |
| R507 | <15 | 15 ~ 60 | >60 | <30 | 30 ~ 110 | >110 |
Specification
| MODEL | SIZE | |
| Welded Connection | Threaded Connection | |
| SGN – 1/4 ODF | SGN – 1/4 SAE | 1/4 ( ? 6 ) |
| SGN – 3/8 ODF | SGN – 3/8 SAE | 3/8 ( ? 10 ) |
| SGN – 1/2 ODF | SGN – 1/2 SAE | 1/2 ( ? 12 ) |
| SGN – 5/8 ODF | SGN – 5/8 SAE | 5/8 ( ? 16 ) |
| SGN – 3/4 ODF | SGN – 3/4 SAE | 3/4 ( ? 19 ) |
| SGN – 7/8 ODF | — | 7/8 ( ? 22 ) |
Structure
| MODEL | CONNECTION | A | ?B | C | ?D | H | L1 | L | THREAD M |
| (mm) | (mm) | (mm) | (mm) | (mm) | (mm) | (mm) | |||
| SGN – 1/4 | ODF | 10 | 27 | 14 | 6.35 | 24 | 8 | 101 | — |
| SAE | — | — | — | — | 24 | — | 59.5 | 7/16 – 20UNF | |
| SGN – 3/8 | ODF | 10 | 27 | 14 | 9.52 | 24 | 9 | 119 | — |
| SAE | — | — | — | — | 30 | — | 70 | 5/8 – 18UNF | |
| SGN – 1/2 | ODF | 12 | 27 | 17.5 | 12.7 | 28.5 | 12 | 146 | — |
| SAE | — | — | — | — | 29 | — | 70 | 3/4 – 16UNF | |
| SGN – 5/8 | ODF | 12 | 27 | 20.5 | 15.8 | 29.5 | 12 | 146 | — |
| SAE | — | — | — | — | 31 | — | 80 | 7/8 – 14UNF | |
| SGN – 3/4 | ODF | 16 | 32 | 27 | 19.05 | 37 | 14 | 173 | — |
| SGN – 7/8 | ODF | 16 | 32 | 27 | 22.2 | 37 | 19 | 173 | — |
