Alchem Process Ltd
Unit 4 Church Road Ind Estate,
Gorslas, Llanelli, Carmarthenshire,
SA14 7NN.
Tel: 00 44 (0) 1269 841 324

Tank Equipment - Sight Glasses, Vent Cowls & Level Gauges

Flanged Sight Glasses

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Flanged Circular Sightglass - Style DIN 28120
The circular base or pad flange is suitable for welding into the vessel wall, manway lid or dished head.  The sightglass assembly is supplied complete with upper and lower gaskets, glass disc and fasteners.


Size range from DN50 (2”) to DN200 (8”)


Glass viewing diameter from Ø80 to 225mm


Operating temperature up to 260°C with standard seals with up to 900°C possible.


Maximum operating pressure to 16 bar


The flanges can be supplied in stainless steel, carbon steels and exotic materials such as Hastelloy


We also build custom made assemblies to suit your specific requirements and outside the standard range.


Hinged Light-Sightglass Assembly
A complete rapid opening hinged sightglass assembly is also available, ideal for applications requiring regular product sampling.


Available in sizes from 150 & 225mm diameters
Supply voltage ranges in 24 and 240 volt with 100 Watt output


Available with all contact parts in 304 or 316L stainless steel