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The sight glass is used on the liquid pipeline of the refrigeration and air-conditioning unit. It is nstalled behind the dryer to detect the flow of the refrigerant, the water content in the refrigerant and the flow of the lubricating oil in the oil return line of the oil separator. It is equipped with a wetness indicator, and the water content is displayed intuitively by color.
High-precision color-changing indicator and wide-angle clear glass coverensure accurate identification.
Brass welding, strong and corrosion-resistant, exposion-proof press fitto ensure safety.
The sealing parts are made of high-performance PTFE, and 100% leakage test is conducted to ensure no leakage.
Design of circular indicating paper, cancellation of adapter, low pressure loss.
The connection has optional screw and weld, and is compatible with HCFC, HFC and corresponding lubricating oil.
General | Value |
Applicable refrigerant | Commonly used refrigerants such as HCFC and HFC. |
Max.working pressure | 4.5MPa |
Max.proof pressure | 6.8MPa |
Ambient temperature range | -50℃~+80℃ |
Applicable Medium Temperature | -40℃~+80℃ |
Model naming LFSG-a-b a stands for pipe size, b stands for pipe form. a can be 4(1/4"), 6(3/8"), 8(1/2"), 10(5/8"), 12(3/4"), 14(7/8"), 18(1-1/8"). b can be no=ODF ODF 1=SAE SAE 2=Male Femal | |||||||||
Model | Pipe size | L | L1 | H | D | d | M | Male | Female |
LFSG-4 | 1/4" | 100 | 7 | 23 | 26.5 | 6.5 | 一 | ||
LFSG-4-1 | 64 | 一 | 23 | 26.5 | 一 | 7/16-20UNFF | |||
LFSG-4-2 | 59 | 一 | 24.5 | 26.5 | 一 | ||||
LFSG-6 | 3/8" | 118 | 8 | 23 | 26.5 | 10.1 | 一 | ||
LFSG-6-1 | 70 | 一 | 23 | 26.5 | 一 | 5/8-18UNF | |||
LFSG-6-2 | 65 | 一 | 29 | 26.5 | 一 | ||||
LFSG-8 | 1/2" | 144 | 10 | 28 | 26.5 | 12.8 | 一 | ||
LFSG-8-1 | 78 | 一 | 28 | 26.5 | 一 | 3/4-16UNFF | |||
LFSG-8-2 | 70 | 一 | 31.5 | 26.5 | 一 | ||||
LFSG-10 | 5/8" | 150 | 14 | 31 | 26.5 | 16.1 | 一 | ||
LFSG-10-1 | 78 | 一 | 31 | 26.5 | 一 | 7/8-14UNF | |||
LFSG-10-2 | 78 | 一 | 37 | 30 | 一 | ||||
LFSG-12 | 3/4" | 166 | 16 | 34 | 31.5 | 19.1 | 一 | ||
LFSG-12-1 | 94 | 一 | 34 | 31.5 | 一 | 1-1/16-14UNF | |||
LFSG-14 | 7/8" | 172 | 17 | 37 | 31.5 | 22.3 | 一 | ||
LFSG-18 | 1-1/8" | 212 | 18 | 42 | 31.5 | 28.7 | 一 | ||
Comparison table of refrigerant with water content and color
Medium | Water content PPM(one in a million) | |||||
25℃ | 43℃ | |||||
Green/dry | Intermediate color/ warning | Yellow/ moist | Green/dry | Intermediate color/ warning | Yellow/moist | |
R22/R502 | <30 | 30~120 | >120 | <50 | 50~200 | >200 |
R134a | <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 |
R401A | <66 | 66~266 | >266 | <135 | 135~540 | >540 |
R410A | <60 | 60~280 | >280 | <75 | 75~420 | >420 |
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