Rectangular Level Gauge Assembly, Weld-On
Weld-On Level Gauges for Sight Glass
This rugged weld-on sight glass fitting provides flow or level indication for vessels and pipelines. Available in multiple sizes and metals.
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Request a QuoteOperating Conditions:
- Pressure: 230 psig (16 bar)
- Vacuum service
- Before putting the fitting into operation, the strength of the cutout reinforcement in combination with the vessel wall should be checked in accordance with TÜV leaflet.
Operating Temperatures:
- 212°F (100°C) with sodalime glass, DIN 8903
- 470°F (243°C) with borosilicate glass, DIN 7081
- These temperatures refer to unprotected glass (i.e. without mica protective sheet).
Parts and available materials in drawing on right:
| Item | Parts | Material options |
|---|---|---|
| 1 | base frame | carbon steel RSt 37-2; stainless steel 316L or alternative |
| 2 | seal | KLINGERSil C-4400; Neoprene; Gylon; PTFE or alternative |
| 3 | sightglass window | borosilicate glass: tempered, DIN 7081, max. 470°F (243°C) |
| 4 | cover frame | carbon steel RSt 37-2; stainless steel 316 or alternative |
| 5 | securing bolts | carbon steel 5.6 or stainless steel |
| Size | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
|---|---|---|---|---|---|---|---|---|---|
| Overall Length (L) | 250(9.84″) | 300(11.81″) | 350(13.77″) | 400(15.75″) | 500(19.68″) | 600(23.62″) | 700(27.35″) | 800(31.50″) | 1000(39.37″) |
| Visible Length | 205(8.07″) | 255(10.04″) | 305(12.01″) | 355(13.98″) | 455(17.91″) | 555(21.85″) | 655(25.79″) | 755(29.72″) | 955(37.60″) |
| Gage Glass Size* | #5 | #7 | #8 | #10 | #5 | #7 | #8 | #10 | #5 |
| Size | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 4 |
| Size | 10 | 14 | 16 | 18 | 20 | 28 | 32 | 36 | 40 |
*Standard is reflex glass. Please specify in your order if you wish the optional transparent type glass (see below).
Glass is 34 mm wide and 17 mm thick, length depends on size.
Welded into a vessel or a pipeline, these rugged sight glass fittings provide either flow or level indication. They are available in carbon steel, stainless steel and special alloys. Rectangular sight glass fittings are available with a 5/8″ wide view and up to 70″ in overall length. Custom designs are also available; inquire with your local representative or L.J. Star for details.
This L.J. Star product carries Canadian Registration Number (CRN) registration (Except Alberta).