Tri-Clamp Four-Way Cross Sight Glass with Union Window Closures

A four-way cross sanitary sight glass featuring inline Tri-Clamp ferrule flow ends and opposed slotted union-nut tempered glass viewing ports. Manufactured from forged, CNC-machined SS304 or SS316L stainless steel across 1"–4" and DN25–DN100 under 3A, SMS, DIN, RJT, and IDF standards.

Body Material	Forged SS304 / SS316L
Flow Port Connection	Tri-Clamp Ferrule Ends (Clamped)
Body Construction	Four-Way Cross Body with Slotted Union-Nut Tempered Glass Windows
Nominal Size Range	1"–4" or DN25–DN100
Supported Standards	3A, SMS, DIN, RJT, IDF, ISO, DS

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Clamped Inline Flow Ends and Opposed Viewing Windows

This cross-type sight glass combines a forged, CNC-machined stainless steel body with Tri-Clamp ferrules on the inline process ports and replaceable tempered glass lenses secured by slotted round union nuts on the opposed viewing ports. The clamped ends allow quick installation and removal from hygienic pipelines without welding.

Series Size Range and Reference Drawings

Series specification tables specify 1"–4" and DN25–DN100 across 3A, SMS, DIN, RJT, and IDF standards. Note that the embedded reference drawings No.50042 (3A, SMS, ISO, DS: 1"–4", tube OD D 25.4–101.6 mm, bore Dn 22.4–97.6 mm, height H 67–168 mm, length L 90–300 mm) and No.50041 (DIN: DN25–DN100, tube OD D 28–104 mm, length L 90–300 mm) illustrate the weld-end spherical cross body.

Material Grades and Seal Options

Constructed from SS304 or SS316L stainless steel, the sight glass offers silicone (VMQ), EPDM, Viton, NBR, and PTFE window seals for food, wine, dairy, beverage, vacuum, pharmaceutical, and chemical service (source-claimed tempered glass rating up to 10 bar and -10 °C to +120 °C with EPDM).

Ordering and Maintenance Notes

Confirm the required tube size, ferrule standard, stainless steel grade, and seal elastomer when ordering. Unscrew the slotted union rings with a hook spanner to inspect or replace the tempered glass discs and gaskets, and request heat numbers or MTRs at order placement if needed.