straight through sight glass front
straight through sight glass front

Straight-Through Sight Glass

Straight-through sight glass for high-pressure pipelines. Borosilicate or quartz tubes, flanged ANSI up to 1500 LBS, datasheet & COA available.

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Description

Straight-through sight glass (US standard tubular sight window) provides an inline visual inspection of flow, level, and clarity in pipelines. Designed to US/ANSI flange standards (ANSI up to 1500 lb), our high-pressure models support demanding process conditions and come with borosilicate or quartz tubes for different temperature/chemical needs.

Quick product highlights

  • High pressure capability: Up to 160 bar (≈2320 psi) depending on housing and configuration.
  • Glass options: Borosilicate (max ~280°C), Quartz (up to ~500°C) — choose by temperature and media.
  • ANSI compatibility: Flanges available to ANSI drilling up to 1500 LBS.
  • Installation: Any position; all weldable materials are possible for the body.
  • Special versions: rotor, flap, viewing glass lamps; custom designs on request.

Typical specifications

ANSI Straight-Through Tubular Sight Glass — Key Specifications

Model ANSI Straight-Through Tubular Sight Glass — Series LMX-912
Operating pressure Up to 160 bar (≈2320 psi) — per housing rating
Operating temperature Borosilicate glass max ~280°C; Quartz glass up to ~500°C
Connections ANSI flanges (up to 1500 LB), DIN to PN160, weld-in, internal thread
Materials All weldable materials possible (SS304/316, carbon steel, Duplex, etc.)
Standard sizes Custom lengths; flange drilling per ANSI/DIN — contact for bolt pattern
Certification (option) WAZ to EN 10204-2.2 / EN 10204-3.1 or custom certificates

Need custom configuration or certificates? Contact us for a datasheet & quote.

Why choose this ANSI straight-through sight glass?

  • Reliable inspection under pressure: engineered for predictable performance up to high bar/psi ratings.
  • Material flexibility: glass & body materials matched to media and temperature.
  • US standard compatibility: direct fit to ANSI-drilled flanges simplifies retrofit and replacement.
  • Serviceable design: replaceable tube cartridges and gaskets reduce downtime.

Downloads

FAQ

1. What pressure does this sight glass support?
Typical tested configurations support up to 160 bar (≈2320 psi). Final rating depends on flange class and glass thickness — consult the datasheet for details.
2. Which glass should I choose for high temperatures?
Use quartz for extreme temperatures (up to ~500°C). For most high-temp process lines, borosilicate glass (up to ~280°C) provides a cost-effective solution.
3. Does this fit the ANSI 1500 flange drilling?
Yes. We supply ANSI-drilled flanges up to 1500 lb on request; provide the required flange class when ordering.

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