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INTRO Sight Glass

The Industrial Sight Glass (Visual Flow Indicator) is an essential instrument for real-time monitoring of fluid flow, clarity, and color within a pipeline. At INTRO VALVE INDUSTRIES, we manufacture Sight Glasses that prioritize safety and visibility. Utilizing toughened borosilicate glass and precision-engineered bodies, our indicators allow operators to visually verify process conditions without disrupting flow or risking exposure to hazardous fluids.

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Core Features:

  • High-strength toughened glass compliant with DIN 7080
  • Available with flapper, drip tube, or rotor indicators
  • Full-bore design for unobstructed visual access
Applications: Pharmaceutical lines, Chemical batching, Oil & gas transport, Condensate return, and Food processing.
Design Standards: Manufacturer Standard / ASME B16.34
End Connections: Flanged (ASME B16.5 / DIN), Screwed (NPT/BSP).
Glass Types: Toughened Borosilicate (up to 280°C), Soda Lime (up to 150°C).
Part Name Material Options Specifications
BodyWCB / CF8 / CF8M / DIRugged cast construction for industrial pressure
Glass WindowToughened BorosilicateHeat-resistant, high-transparency thermal glass
Cover PlateWCB / SS 304 / SS 316Bolted design for secure glass retention
GasketsPTFE / CAF / GraphiteHigh-temperature sealing for leak-proof service
Cushion GasketNon-Asbestos / TeflonProtects glass from metal contact stress
Indicator (Optional)PTFE / SS Flapper / RotorEnhances flow visibility for clear liquids
HardwareCarbon Steel / Stainless SteelHigh-tensile bolts and nuts