Sight Flow Indicators
Sanitary Flow Indicators
Manufacturer of Sight Glasses & Sight Flow Indicators
Properties & Applications
Process Vessel Lighting
Explosion Proof Lighting Fixtures for Sanitary Applications
Explosion Proof Lights for Brewery Applications
Laboratory Lighting for Pharmaceuticals
SIGHT GLASS LIGHTING
Sight Flow Indicators & Level Gauges for Shipboard Applications
Sight Glass for Oil Spill
Custom Manufactured Sight Glass
INNOVATIVE PROCESSING SOLUTIONS
Quick Opening Sight Glasses
QSG Series Quick Opening Sight Glasses
Item # QSG-225
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Item # QSG-225, QSG Series Quick Opening Sight Glasses
The special features of this Papailias sight glass, Series QSG, are the quick release handle mechanism and hinge assembly. When the handle is released, the sight glass may be pivoted off the lower flange, offering unobstructed easy access to the interior of a vessel for sampling, cleaning or maintenance work. Series QSG Sight glasses are ideally suited wherever samples must be taken during a process which is being carried out at low pressure or under vacuum conditions.
Rated Pressure at 300 ºF (149 ºC) Temperature
Halogen Lamp Voltage
Halogen Lamp Power
Sight Glass Feature
Weld Pad Flange Material
Lower Flange Material
Tempered Soda Lime
Weld pad flange constructed of carbon steel and stainless steel are standard. Virtually any machinable alloy can be specified to meet user requirements.
Lower sight glass flange constructed from aluminum casting.
Sight glasses are rated standard for 7 PSIG (0.5 Barg) pressure at 300 ºF (149 ºC) temperature.
Standard sight glass lens and o-ring seals are tempered soda lime and neoprene respectively. Other lens and seal materials are available.
High intensity 120 V/100 W halogen lamp provides bright illumination.
Built-in momentary on/off switch for energy savings and increased lamp life.
Guide to Corrosion Resistance