ASME Sight Glass
ASME sight glasses are a good choice for pressure tanks, vacuum chambers, ovens for baking out parts in semiconductor and clean room applications. The housing is flanged, conforming to the ASME B16.5 standard. These sight glass are engineered and tested to meet rigorous safety standards.
Metaglas, Herberts Industrieglas GmbH & Co. KG
ASME B16.5 - Flanged Sight Glasses, Borosilicate Windows.

Sight windows for corrosion resistant applications. Suitable configuration for flue gas scrubber systems, cooling towers, incinerators, geothermal wells, deep/shallow sea water applications, biofuels, food, and pharmaceutical processing equipment. Requires parallel mounting flat face and full gasket.
Fusing glass to metal creates a hermetically sealed single-piece part. The advantage of this construction is high strength of the glass, which ensures safety of operation, even during cycling operating temperatures common with equipment starts and stops. The part is easy to install, and has a long working life without maintenance.
Fusing glass to metal creates a hermetically sealed single-piece part. The advantage of this construction is high strength of the glass, which ensures safety of operation, even during cycling operating temperatures common with equipment starts and stops. The part is easy to install, and has a long working life without maintenance.
Nominal Pipe Size | ASME Class | Aperture Dia | Max Operating Temp | Housing Material | Window Material | Mfg.P/N | Encole P/N | Price |
---|---|---|---|---|---|---|---|---|
1-1/2 | 150 | 40.00 mm | 280 C | 2205 Duplex | Borosilicate | Met 13A15-1.5S | 905S13 | $749.63 each |
2 | 150 | 50.00 mm | 280 C | 2205 Duplex | Borosilicate | Met 13A15-2S | 905S14 | $974.85 each |
2-1/2 | 150 | 60.00 mm | 280 C | 2205 Duplex | Borosilicate | Met 13A15-2.5S | 905S15 | $1362.45 each |
3 | 150 | 75.00 mm | 280 C | 2205 Duplex | Borosilicate | Met 13A15-3S | 905S16 | $1679.80 each |
4 | 150 | 100.00 mm | 280 C | 2205 Duplex | Borosilicate | Met 13A15-4S | 905S18 | $1820.70 each |
6 | 150 | 140.00 mm | 280 C | 2205 Duplex | Borosilicate | Met 13A15-6S | 905S21 | $2655.25 each |
8 | 150 | 160.00 mm | 280 C | 2205 Duplex | Borosilicate | Met 13A15-8S | 905S23 | $3184.35 each |
1-1/2 | 300 | 40.00 mm | 280 C | 2205 Duplex | Borosilicate | Met 13A-30-1.5S | 907S13 | $1748.51 each |
2 | 300 | 50.00 mm | 280 C | 2205 Duplex | Borosilicate | Met13A-30-2S | 907S14 | $1812.20 each |
2-1/2 | 300 | 60.00 mm | 280 C | 2205 Duplex | Borosilicate | Met 13A-30-2.5S | 907S15 | $1897.60 each |
3 | 300 | 70.00 mm | 280 C | 2205 Duplex | Borosilicate | Met 13A-30-3S | 907S16 | $2651.35 each |
4 | 300 | 100.00 mm | 280 C | 2205 Duplex | Borosilicate | Met 13A-30-4S | 907S18 | $4862.70 each |
1-1/2 | 150 | 40.00 mm | 300 C | Hastelloy C-22 | Borosilicate | Met 13A15-1.5H | 906S13 | $1832.96 each |
2 | 150 | 50.00 mm | 300 C | Hastelloy C-22 | Borosilicate | Met 13A-15-2H | 906S14 | $2111.40 each |
2-1/2 | 150 | 60.00 mm | 300 C | Hastelloy C-22 | Borosilicate | Met 13A-15-2.5H | 906S15 | $2489.60 each |
3 | 150 | 75.00 mm | 300 C | Hastelloy C-22 | Borosilicate | Met 13A-15-3H | 906S16 | $2895.47 each |
4 | 150 | 100.00 mm | 300 C | Hastelloy C-22 | Borosilicate | Met 13A-15-4H | 906S18 | $4985.90 each |
6 | 150 | 140.00 mm | 300 C | Hastelloy C-22 | Borosilicate | Met 13A-15-6H | 906S21 | $6475.32 each |
8 | 150 | 160.00 mm | 300 C | Hastelloy C-22 | Borosilicate | Met 13A-15-8H | 906S23 | $9739.73 each |
1-1/2 | 300 | 40.00 mm | 280 C | Hastelloy C-22 | Borosilicate | Met 13A-30-1.5H | 908S13 | $2932.74 each |
2 | 300 | 50.00 mm | 280 C | Hastelloy C-22 | Borosilicate | Met 13A-30-2H | 908S14 | $3775.75 each |
2-1/2 | 300 | 60.00 mm | 280 C | Hastelloy C-22 | Borosilicate | Met 13A-30-2.5H | 908S15 | $4872.20 each |
3 | 300 | 70.00 mm | 280 C | Hastelloy C-22 | Borosilicate | Met 13A-30-3H | 908S16 | $5358.52 each |
4 | 300 | 100.00 mm | 280 C | Hastelloy C-22 | Borosilicate | Met 13A-30-4H | 908S18 | $7134.50 each |