Pipeline ancillaries Sight glasses
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Local regulations may restrict the use of this product to below the conditions quoted. In the interests of development and improvement of the product, we reserve the right to change the specification without notice. © Copyright 2025
TI-P130-28 CMGT Issue 14
SGC40 and SGS40 Sight Glasses
Description The SGC40 cast carbon steel and SGS40 stainless steel are double window sight glasses having screwed, sanitary clamp, socket weld and flanged connections.
DN32 shown having an integral flange Please note that flanges are welded onto the body of the smaller DN15 to DN25 units.
Standards These products fully comply with the requirements of the European Pressure Equipment Directive 2014/68/EU and carry the mark when so required. Certification These products are available with a manufacturer’s Typical Test Report and if specified certification to EN 10204 3.1. Note: All certification/inspection requirements must be stated at the time of order placement. Optional extras: - Visual flow indicator flap to check the flow of the liquid in the pipeline.
7.8.18
- Spring: The visual flow indicator flap can be spring loaded for applications on vertical lines or where there is high flowrates. - Mica glass protectors for severe applications - When these have been specified the nomenclature becomes SGC40M and SGS40M. - Glass filled PTFE gasket. Please see table below to identify when Mica glass protectors are to be used.
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Sizes and pipe connections - ½ ", ¾ ", 1", 1 ¼ ", 1 ½ " and 2" Screwed BSP T Rp (ISO 7-1), NPT and Socket weld. - DN15, DN20, DN25, DN40 and DN50 Sanitary clamp connections to ASME BPE. - DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80 and DN100. Flanged EN 1092 PN40, ASME Class 150 and Class 300, JIS/KS 10 and JIS/KS 20. - Flanged versions have face-to-face dimensions in accordance with EN 558 Series 1.
Application
Glass choice to be used
Mica glass protectors and Borosilicate glass windows Mica glass protectors and Borosilicate glass windows
Steam or > pH9
>150 °C and > pH7
<150 °C and < pH7
Borosilicate glass windows only
TI-P130-28 CMGT Issue 14
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SGC40 and SGS40 Sight Glasses
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