This series of weld neck style sight glasses are designed for welding to a stub end pipe or may be supplied with a radius to saddle the pipe.
Each is rated for 150 PSIG (10.3 Barg) at 300 ºF (149 ºC) with a tempered soda lime lens and 500 ºF (260 ºC) with a borosilicate lens. Sight glasses are constructed using code materials.
Optional accessories include Series PL, MSL, SLEX, REX, FBX illuminators, and Type I wipers.
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Image | Size | Dimension A | Dimension B | Dimension C | Approx Weight |
|---|---|---|---|---|---|
 | 1 in | 1 in (25 mm) | 4 1/4 in (108 mm) | 3 1/4 in (83 mm) | 6 lb (3 kg) |
| 1 1/2 in | 1 in (25 mm) | 5 in (127 mm) | 3 3/4 in (95 mm) | 9 lb (4 kg) |
| 2 in | 2 in (51 mm) | 6 in (152 mm) | 4 in (102 mm) | 13 lb (6 kg) |
| 3 in | 3 in (76 mm) | 7 1/2 in (191 mm) | 4 3/8 in (111 mm) | 23 lb (10 kg) |
| 4 in | 3 in (76 mm) | 9 in (229 mm) | 4 7/8 in (124 mm) | 34 lb (15 kg) |
| 5 in | 3 in (76 mm) | 10 in (254 mm) | 5 5/16 in (135 mm) | 39 lb (18 kg) |
| 6 in | 3 in (76 mm) | 11 in (279 mm) | 5 3/8 in (137 mm) | 48 lb (22 kg) |
| 8 in | 3 in (76 mm) | 13 1/2 in (343 mm) | 6 1/4 in (159 mm) | 75 lb (34 kg) |