Gauge Glass - Reflex

Product Code: Gauge Glass - Reflex

John Moncrieff — Maxos Reflex Gauge Glass

At John Moncrieff Ltd, we supply Maxos Reflex Gauge Glass, recognised worldwide for its clarity, strength, and precision engineering. These glasses feature distinctive grooves on the viewing surface that increase the angle of refraction, providing a sharp, highly visible contrast between liquid and vapour phases — far clearer than standard transparent gauge glass.

Performance & Application

Enhanced Visibility: The grooved surface provides excellent readability by reflecting light differently in the liquid and vapour zones.
Steam Limitation: Mica protection cannot be applied to Reflex Glass, making it unsuitable for steam applications.
Pressure & Temperature Ratings: Suitable for pressures up to 35 bar, and for non-steam applications up to 400 bar or 400°C.
Supply Options: Available individually or as complete sets with gaskets.

Maxos — The Global Standard

We are proud suppliers of Maxos Brand Reflex Gauge Glass, the premium choice used by leading manufacturers such as Jerguson (Clarke Reliance), Penberthy, Klinger, Bonetti, Bunki Boeki, and Nihon Klingage.

Maxos Reflex Glass is manufactured from tempered borosilicate ("extra hard") or aluminosilicate glass, offering superior mechanical strength and chemical resistance.

Standards & Specifications

DIN 7080 / 7081
BS 3463
JIS B 8211
MIL–G–16356 D
Auer USA Specification
High-Pressure Versions
Customer Specifications
Aluminosilicate Glass on Request

Manufacturing & Quality

After moulding, each Reflex Gauge Glass undergoes double-sided polishing and thermal toughening, resulting in a product with:

High mechanical strength
Exceptional resistance to alkalis, acids, and condensates
Long-lasting optical clarity and performance

Custom & Non-Standard Sizes

Reflex Gauge Glasses can also be produced in non-standard sizes to meet your specific application requirements. Please contact our team to discuss your specifications and obtain a quotation.

Please see below links to our Standard Sizes & Technical Information: