Collection: Circular Sight Glass

Circular Sight Glass is used in chemical, petroleum, water treatment and other industrial pipeline lines. Stainless steel direct-viewing mirror adopts two pieces of high-borosilicate steel glass, which can observe the liquid flow, color and other parameters in the pipeline under the external natural light to ensure the production process and quality of products.

Medium temperature:200°C
The material: Stainless steel 304,316, cast, carbon steel
Pipe thickness:4-20mm
Bolts:A4-70
Model: DN20-DN250
Name: Flow sight glasses, neck sight glass,
Scope of application
Various chemical pipeline
The connection form: flange
Type (channel location): Straight through
Flow direction: two-way, four-way, T style
Drive way: customized
Applicable medium: water
Pressure:1.0-2.5Mpa
Glass material &temperature
DIN7080. borosilicate glass, max. 280°C +mica shield max 300°C
DIN8902. soda-lime glass max. 150°C
Quartz glass, max. 1000°C
Alumino-silicate glass, high pressure resistant
Seal gasket
EPDM,150°C
Graphite,270°C
PTFE,200°C
FKM,200°C
NBR,100°C
Metal,200°C
Silicone,200°C

DIN 7080 Sight GlassDIN 8902 Sight Glass


DIN 7080 Structure

63 products
  • Liquid Level Gauge Sight Glass for hydraulic tank
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  • 3/4" NPT Stainless Steel 304 Sight Water Flow Indicator Sight Glass
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  • Blue Cobalt Glass Furnace Peep Hole Glass for Sight Glass
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  • Peeping Glass Blue Cobalt Glass Furnace Peep Hole Glass for Sight Glass
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  • Blue Sight Glass
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  • Blue Cobalt Sight Glass
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  • Boiler Level Sight Glass 5/8OD Red Line Gauge Glass
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    $9.00
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  • Through endoscopic sight glass
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  • Super pressure and temperature and blast resistant sight glass
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  • 19mm Oval Sight Glass
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    $35.00
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  • 15mm Oblong Sight Glass
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    $26.00
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  • 15mm Rectangle Sight Glass
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    $25.00
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