Weld-On Circular Sight Glass | Encole

Weld-On Circular Sight Glass

Circular sight glasses with weld pads, flange cover and all hardware included. Ready to install & use. These sight windows allow for a quick observation inside pressure vessels, silos, pipelines, oil tanks, mixers separators.

Encole

High Temperature Sight Windows, Weld-On

High Temperature Sight Windows, Weld-On
Designed for continuous operation at 2,000 °F. All of the construction materials in these sight windows resist oxidation and maintain strength at high temperature. These sight windows are typically used for visual inspection, with remotely mounted cameras away from heat, or laser sensors monitoring the process in furnaces, ovens, kilns, or any combustion chambers at near-ambient pressures.

The weld pad housing has a weld-prepped chamfer ready to be butt welded to a flat vessel wall. The flange cover is mounted over the quartz window, sandwiched between graphite gaskets. The cover is torqued down to the weld pad with eight hex-head bolts. Cover lands directly onto the weld pad, eliminating any mechanical stresses in the window. This is a benefit of this design allowing accommodating higher stresses from thermal loads.
Nominal Pipe Size Aperture Dia Max Operating Pressure Max Operating Temp Housing Material Window Material Mfg P/N Encole P/N Price
1.30 Tube O.D. 1.000 inch 145 psi 2000 F 800H Quartz 100822 326A1000 $5520.00 each
2.30 Tube O.D. 2.000 inch 145 psi 2000 F 800H Quartz 100823 326A1001 $5960.00 each
3.30 Tube O.D. 3.000 inch 145 psi 2000 F 800H Quartz 100824 326A1002 $7734.00 each
4.30 Tube O.D. 4.000 inch 145 psi 2000 F 800H Quartz 100825 326A1003 $8760.00 each
6.30 Tube O.D. 6.000 inch 145 psi 2000 F 800H Quartz 100826 326A1004 $10860.00 each

Papenmeier - F. H. / Lumiglas

Lumiglas Circular Sightglass Weld-On, Stainless Steel Housings, PTFE gasket, Borosilicate Windows.

Lumiglas Circular Sightglass Weld-On, Stainless Steel Housings, PTFE gasket, Borosilicate Windows.
Weld-on circular sight glasses for a quick observation inside pressure vessels, silos, pipelines, oil tanks, mixers separators. These sightglass fittings come standard with all seals and mounting hardware included.

The kit includes one Weld pad made from 316L stainless steel, one Cover flange made from 321 stainless, one toughened borosilicate disc, one seal gasket made from PTFE (Teflon), one cushion gasket made from Klinger(R) C-4400, eight mounting studs and nuts made from 304 (A2) stainless steel.

The Weld pad is flat on the bottom and has a weld prep chamfer ready to be welded to a flat process wall. Curvature can be machined in as needed to match non-flat vessel walls. The weld pad made from 316L has better overall corrosion resistance than 321, which has greater strength. The combination of 316L for weld pad and 321 for the clamp flange gives this kit the most optimum balance of strength and corrosion resistance.
Nominal Pipe Size Aperture Dia Max Operating Pressure Max Operating Temp Housing Material Window Material Mfg P/N Encole P/N Price
ISO-200 225.00 mm 150 psi 280 C AISI 316L Borosilicate DN-F1BB1A1BNNN 252A1011 $2423.00 each
ISO-150 175.00 mm 235 psi 280 C AISI 316L Borosilicate DN-E2BB1A1BNNN 252A1010 $1644.00 each
ISO-125 150.00 mm 235 psi 280 C AISI 316L Borosilicate DN-D2BB1A1BNNN 252A1009 $1251.00 each
ISO-100 125.00 mm 235 psi 280 C AISI 316L Borosilicate DN-C2BB1A1BNNN 252A1008 $975.00 each
ISO-80 100.00 mm 235 psi 280 C AISI 316L Borosilicate DN-B2BB1A1BNNN 252A1007 $991.00 each
ISO-50 80.00 mm 235 psi 280 C AISI 316L Borosilicate DN-A2BB1A1BNNN 252A1006 $779.00 each

Papenmeier - F. H. / Lumiglas

Lumiglas Circular Sightglass Weld-On, Carbon Steel Housing, Borosilicate Windows

Lumiglas Circular Sightglass Weld-On, Carbon Steel Housing, Borosilicate Windows
The kit includes one Weld pad and one Cover flange made from RST 37.2 carbon steel, one toughened borosilicate disc, one seal gasket made from PTFE (Teflon), one cushion gasket made from Klinger(R) C-4400, eight mounting studs and nuts made from carbon steel bolt grade 5.6. The weld pad is flat on the bottom and has a weld prep chamfer ready to be welded to a flat process wall. Curvature can be machined in as needed to match non-flat vessel walls. The weld pad comes plated and the cover flange is painted for rust prevention.

After welding the ferrule (weld pad) the sightglass disc has a permanent dedicated location on the pressure vessel. Cover flange, window, seals and mounting hardware can be replaced during scheduled service intervals or as needed. Sightglass disc and the gaskets must be replaced whenever the assembly is taken apart.
Nominal Pipe Size Aperture Dia Max Operating Pressure Max Operating Temp Housing Material Window Material Mfg P/N Encole P/N Price
ISO-200 175.00 mm 150 psi 280 C Carbon Steel Borosilicate DN-E1AA1A1ANNN 252A1016 $2000.00 each
ISO-125 150.00 mm 150 psi 280 C Carbon Steel Borosilicate DN-D1AA1A1ANNN 252A1015 $1200.00 each
ISO-100 125.00 mm 150 psi 280 C Carbon Steel Borosilicate DN-C1AA1A1ANNN 252A1014 $1000.00 each
ISO-80 100.00 mm 150 psi 280 C Carbon Steel Borosilicate DN-B1AA1A1ANNN 252A1013 $800.00 each
ISO-50 80.00 mm 150 psi 280 C Carbon Steel Borosilicate DN-A1AA1A1ANNN 252A1012 $600.00 each