Experts in sight glass precision
Visilume is a market leader in the supply of sight glasses for viewing the contents and levels of tanks, vessels and pipelines to various industries including oil and gas, pharmaceutical, petrochemical and nuclear.
Process observation since 1984
Offering a wide range of sight glasses to suit a variety of different processes and environments, our product range is further complemented by a diverse range of process observation equipment, all manufactured to the highest industry standards and specifications.

Sight Glass Fittings
Sight glasses, also called sight windows or view ports, comprise two flanges, bolted together, surrounding a glass disc sealed with gaskets and provides a means of viewing the inside of a process vessel or tank.

Custom Sight Glass Fittings
Custom sight glasses are uniquely designed to suit your application. Available for a wide range of pressures and temperatures, which are dictated by the viewing area, material specification and working environment.

METAGLAS®
METAGLAS® can replace conventional glass in many applications including circular flange assemblies for welding into vessels, weld neck & nozzle flanges and sight flow indicators.

Light Fittings and Cameras
Our sight glass light products (also called” luminaires”) illuminate process vessel interiors in pharmaceutical, food processing, and chemical plants. Available in standard and explosion-proof {ex-lights} housings LED designs.

Flow Indicators
A sight flow indicator is used in process pipelines to observe the flow of liquid, powder or gas. We also offer standard view and full-view sight flow indicators for industrial, sterile and hygienic applications.

Bursting Discs
A rupture disc, also known as a bursting disc, is a non-reclosing pressure relief safety device that, in most cases, protects a pressure vessel, equipment or system from overpressurization or potentially damaging vacuum conditions.

Pressure Vessel Clamps
Designed to be used with pressure vessels and tanks, pipelines, reactor vessels and autoclaves, our clamps offer a quick release alternative to conventional bolting systems and avoid the need for the vessel closure to be flanged and drilled.

Level Indicators
Our magnetic level gauges and glass weld-on level gauges provide a simple, accurate, and reliable indication of fluid levels in tanks, boilers and process vessels.
METAGLAS® and METACLAMP® are registered trademarks of Herberts Industrieglas.
Lumiglas® and LumiStar® are registered trademarks of F.H. Papenmeier GmbH & Co. KG
Contact Us
High Street West,
Glossop,
SK13 8ER,
United Kingdom
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