Butt-Weld Cross Sight Glass with Integrated Sight Lamp

A four-way cross sanitary sight glass with butt-weld inline flow ends, slotted union-nut tempered glass viewing ports, and an integrated top-mounted sight glass lamp. Manufactured from forged, CNC-machined SS304 or SS316L stainless steel across 1"–4" and DN25–DN100.

Body Material	Forged SS304 / SS316L
Flow Port Connection	Butt-Weld Flow Ends (Welding)
Body Construction	Four-Way Cross Body with Union-Nut Windows & Top Sight Lamp
Nominal Size Range	1"–4" or DN25–DN100
Supported Standards	3A, SMS, DIN, RJT, IDF

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Illuminated Four-Way Cross Body and Welded Flow Ends

This illuminated cross sight glass pairs a forged, CNC-machined stainless steel four-way body and butt-weld inline ends with opposed slotted union-nut viewing windows and a top-mounted cylindrical sight lamp housing. Backlighting or top illumination through one window allows clear observation of dark or turbulent media through the opposite window.

Material Grades, Standards, and Size Range

Source parameters specify forged SS304 or SS316L stainless steel body construction with CNC-lathed interior surfaces across nominal sizes 1"–4" and DN25–DN100 under 3A, SMS, DIN, RJT, and IDF standards, paired with AISI 304/316L protective sleeves, stainless steel fasteners, and replaceable tempered glass lenses.

Elastomer Seal Options and Operating Parameters

Available window seal materials include silicone (VMQ FDA 177.2600 in header), EPDM, Viton, NBR, and PTFE for food, wine production, dairy, beverage, meat processing, vacuum processing, pharmaceutical, and chemical pipelines (source-claimed tempered glass rating up to 10 bar and -10 °C to +120 °C with EPDM).

Pre-Weld Disassembly and Lamp Specification

Remove the lamp assembly, union-nut window rings, tempered glass lenses, and elastomer gaskets before butt-welding the body into the pipeline. Because lamp voltage and enclosure rating are not tabulated in the series documentation, confirm electrical specifications and any required MTR certificates when ordering.