Sight Glasses

  •  Sight Glasses
  •  Sight Glasses

Sight Glasses
The NSG series of sight glasses are used to show:
1. The condition of the refrigerant in the plant liquid line
2. The moisture content in the refrigerant
3. The flows in the oil return line from the oil separator.

Description
These sight glasses are outfitted with an indicator that will change color to show the moisture content in the refrigerant. The indicator will flash dark blue for low water levels, and pink for high water levels. When the light is pink, users should determine the cause, or change the filter dryer in the system.

Technical Data of Sight Glasses
Max. working pressure : 3.5MPa
Max. working temperature : 80℃
Available medium :R134a、R22、R407C and R404A/R507

Moisture Content (Unit: P.P.M)
Refrigerant R22 R134a
Liquid
temperature
24℃ 38℃ 52℃ 24℃ 38℃ 52℃
Blue (dry) < 30 < 45 < 60 < 30 < 45 < 60
Light blue
(warning)
30 ~ 120 45 ~ 180 60 ~ 240 30 ~ 100 45 ~ 160 60 ~ 220
Pink (moisture) > 120 > 180 > 240 > 100 > 160 > 220
Type & Data
Connectin form Model Connection size Dimension (mm)
in. mm Length Width Height
Solder ODF NSGWW6 Φ6 120 35 35
NSGWW1/4 1/4" 120 35 35
NSGWW10 Φ10 120 35 35
NSGWW3/8 3/8" 120 35 35
NSGWW12 Φ12 120 35 35
NSGWW1/2 1/2" 120 35 35
NSGWW16 Φ16 140 35 40
NSGWW5/8 5/8" 140 35 40
NSGWW19 Φ19 147 35 40
NSGWW3/4 3/4" 147 35 40
NSGWW22 Φ22 160 35 40
NSGWW7/8 7/8" 160 35 40
NSGWW28 Φ28 170 35 40
NSGWW1-1/8 1-1/8" 170 35 40
Flare nuts NSGSS6 Φ6 80 35 35
NSGSS1/4 1/4" 80 35 35
NSGSS10 Φ10 95 35 35
NSGSS3/8 3/8" 95 35 35
NSGSS12 Φ12 95 35 35
NSGSS1/2 1/2" 95 35 35
NSGSS16 Φ16 95 35 35
NSGSS5/8 5/8" 95 35 35

Note: SGSF, SGSU, SGUU, SGWD series are special types, please contact us directly.

Ordering Information
Model NSG Connection Size
Expalnations Sight Glass Valve Code WW= ODFXODF Connection size
SS=FlareXFlare
SF=Female flareXMale flare
SU=Female flareXFemale flare swivel nuts
UU=Female flare swivel nuts
WD=Straight thru configuration
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