Rectangular and Obround Sight Glasses | Encole
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Rectangular and Obround Sight Glasses

Obround and rectangular sight windows with a weld-on base pad. In typical applications the base flange is welded to the process vessel, and the rest of the sight window components mount into that base flange. Glass is sandwiched between a sealing gasket and a cushion gasket. Cover flange is bolted to the base flange holding the assembly together. Gaskets, mounting hardware and the glass can be replaced during scheduled service intervals or as needed. Choose from obround or rectangular sight glasses. Rectangular and obround sightglass fittings are common for viewing inside pipelines, pressure vessels, liquid tanks. Primarily used for liquid level observation.

Papenmeier - F. H. / Lumiglas

Rectangular Sightglass Fittings

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Base frame (weld-pad) is welded onto the vessel wall. The glass is sandwiched between gaskets on both sides and is held in place with a cover flange, bolted to the base flange. For use as a fluid level visual indicator inside silos, pressure tanks, and internals of pipelines. Reflex glass has prismatic grooves using light refraction to better differentiate level without internal lighting in the vessel.
Housing Material Length Window Material Mfg P/N Encole P/N Price
Stainless Steel 316L 250 mm Reflex Tempered Borosilicate Glass REC-250-CA2A1DN 784E2001 $ 526.00 each
Carbon Steel RSt 37.2 250 mm Reflex Tempered Borosilicate Glass REC-250-AA2A1DN 784E2005 $ 374.00 each
Stainless Steel 316L 300 mm Reflex Tempered Borosilicate Glass REC-300-CA2A1DN 784E2006 $ 617.00 each
Carbon Steel RSt 37.2 300 mm Reflex Tempered Borosilicate Glass REC-300-AA2A1DN 784E20010 $ 440.00 each
Stainless Steel 316L 350 mm Reflex Tempered Borosilicate Glass REC-350-CA2A1DN 784E20011 $ 703.00 each
Carbon Steel RSt 37.2 350 mm Reflex Tempered Borosilicate Glass REC-350-AA2A1DN 784E20015 $ 506.00 each
Stainless Steel 316L 400 mm Reflex Tempered Borosilicate Glass REC-400-CA2A1DN 784E20016 $ 1010.00 each
Carbon Steel RSt 37.2 400 mm Reflex Tempered Borosilicate Glass REC-400-AA2A1DN 784E20020 $ 781.00 each

L.J. Star, Inc

Obround Weld Pad Gauge Sight Glasses

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Obround sight glasses designed for visual inspection of levels inside a tank or a pipeline. The sight glass base is a weld pad designed to be welded directly to the pressure vessel. The glass is sandwiched between a sealing gasket and a cushion gasket held in place with a clamping flange. Glass is clear, made from tempered borosilicate. This window is suitable for the ASME pressure code requirements. The kit comes with all the hardware included.
Width Length Housing Material Window Material Mfg P/N Encole P/N Price
5 inch 10 inch 316L Stainless Steel Tempered Borosilicate Glass OB-2x6-B1A1B 783E6001 $ 1932.00 each
5 inch 16 inch 316L Stainless Steel Tempered Borosilicate Glass OB-2x12-B1A1B 783E6002 $ 2229.00 each
5 inch 22 inch 316L Stainless Steel Tempered Borosilicate Glass OB-2x18-B1A1B 783E6003 $ 2858.00 each
5 inch 28 inch 316L Stainless Steel Tempered Borosilicate Glass OB-2x24-B1A1B 783E6004 $ 3317.00 each
6 inch 11 inch 316L Stainless Steel Tempered Borosilicate Glass OB-3x6-B1A1B 783E6005 RFQ
6 inch 17 inch 316L Stainless Steel Tempered Borosilicate Glass OB-3x12-B1A1B 783E6006 $ 3088.00 each
6 inch 23 inch 316L Stainless Steel Tempered Borosilicate Glass OB-3x18-B1A1B 783E6007 $ 3620.00 each
6 inch 29 inch 316L Stainless Steel Tempered Borosilicate Glass OB-3x24-B1A1B 783E6008 $ 4108.00 each
7 inch 11 inch 316L Stainless Steel Tempered Borosilicate Glass OB-4x6-B1A1B 783E6009 RFQ
7 inch 17 inch 316L Stainless Steel Tempered Borosilicate Glass OB-4x12-B1A1B 783E60010 RFQ
7 inch 23 inch 316L Stainless Steel Tempered Borosilicate Glass OB-4x18-B1A1B 783E60011 RFQ
7 inch 29 inch 316L Stainless Steel Tempered Borosilicate Glass OB-4x24-B1A1B 783E60012 $ 4667.00 each
5 inch 10 inch Carbon Steel SA516-70 Tempered Borosilicate Glass OB-2x6-A1A1A 783E60049 RFQ
5 inch 16 inch Carbon Steel SA516-70 Tempered Borosilicate Glass OB-2x12-A1A1A 783E60050 $ 1894.00 each
5 inch 22 inch Carbon Steel SA516-70 Tempered Borosilicate Glass OB-2x18-A1A1A 783E60051 $ 2464.00 each
5 inch 28 inch Carbon Steel SA516-70 Tempered Borosilicate Glass OB-2x24-A1A1A 783E60052 $ 2732.00 each
6 inch 11 inch Carbon Steel SA516-70 Tempered Borosilicate Glass OB-3x6-A1A1A 783E60053 RFQ
6 inch 17 inch Carbon Steel SA516-70 Tempered Borosilicate Glass OB-3x12-A1A1A 783E60054 $ 2853.00 each
6 inch 23 inch Carbon Steel SA516-70 Tempered Borosilicate Glass OB-3x18-A1A1A 783E60055 $ 3357.00 each
6 inch 29 inch Carbon Steel SA516-70 Tempered Borosilicate Glass OB-3x24-A1A1A 783E60056 $ 3784.00 each
7 inch 11 inch Carbon Steel SA516-70 Tempered Borosilicate Glass OB-4x6-A1A1A 783E60057 RFQ
7 inch 17 inch Carbon Steel SA516-70 Tempered Borosilicate Glass OB-4x12-A1A1A 783E60058 $ 3298.00 each
7 inch 23 inch Carbon Steel SA516-70 Tempered Borosilicate Glass OB-4x18-A1A1A 783E60059 $ 3787.00 each
7 inch 29 inch Carbon Steel SA516-70 Tempered Borosilicate Glass OB-4x24-A1A1A 783E60060 $ 4469.00 each

L.J. Star, Inc

Rectangular Sightglass Fittings, Two-Section Housing

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Two section weld on sightglass guage with a base frames (weld-pad) designed to be welded onto the vessel wall. For use as a fluid level visual indicator inside silos, pressure tanks, and internals of pipelines. Reflex glass has prismatic grooves using light refraction to better differentiate level without internal lighting in the vessel.
Housing Material Length Window Material Mfg P/N Encole P/N Price
Stainless Steel 316L 500 mm Reflex Tempered Borosilicate Glass REC-500-CA2A1DN 924E2001 $ 1010.00 each
Carbon Steel RSt 37.2 500 mm Reflex Tempered Borosilicate Glass REC-500-AA2A1DN 924E2005 $ 781.00 each
Stainless Steel 316L 600 mm Reflex Tempered Borosilicate Glass REC-600-CA2A1DN 924E2006 $ 1293.00 each
Carbon Steel RSt 37.2 600 mm Reflex Tempered Borosilicate Glass REC-600-AA2A1DN 924E20010 $ 932.00 each
Stainless Steel 316L 700 mm Reflex Tempered Borosilicate Glass REC-700-CA2A1DN 924E20011 $ 1470.00 each
Carbon Steel RSt 37.2 700 mm Reflex Tempered Borosilicate Glass REC-700-AA2A1DN 924E20015 $ 1090.00 each
Stainless Steel 316L 800 mm Reflex Tempered Borosilicate Glass REC-800-CA2A1DN 924E20016 $ 1719.00 each
Carbon Steel RSt 37.2 800 mm Reflex Tempered Borosilicate Glass REC-800-AA2A1DN 924E20020 $ 1174.00 each

L.J. Star, Inc

Rectangular Sightglass Fittings, Four-Section Housing

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One common base frame (weld-pad) is welded onto the vessel wall. There are four flanges and four reflex windows bolted to the base frame. The glass is sandwiched between gaskets on both sides and is held in place with a cover flange. For use as a fluid level visual indicator inside silos, pressure tanks, and internals of pipelines.
Housing Material Length Window Material Mfg P/N Encole P/N Price
Carbon Steel RSt 37.2 1000 mm Reflex Tempered Borosilicate Glass REC-1000-AA2A1DN 1002E501 $ 1765.00 each
Stainless Steel 316L 1000 mm Reflex Tempered Borosilicate Glass REC-1000-CA2A1DN 1002E502 $ 2239.00 each

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