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Flanged
Blast Gate Observation Port |
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The Blast Gate
Observation Ports use the standard line of blast gates as the
primary components and incorporates a glass lens, gaskets and
rings that are securely retained with a metal bushing. The
stainless steel slide arrangement in the blast gate gives added
protection and life to the lens during operations and allows
maintenance to be performed with added safety during vessel
down-time. Additional cooling can be obtained by adding a purge
connection on the glass or vessel side of the blast gate
housing. Three choices of glass are available for varying
temperature exposures and viewing requirements.
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Flanged Blast Gate
Observation Port Diagram |
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Pipe
Size |
Viewing
Area |
A |
B |
C |
D |
E |
F |
G |
Bolt
Size |
Bolt
Circle |
Unpacked
Weight |
PSI Rating |
| 4" |
3-9/16"
Dia. |
15-1/4" |
4-1/4" |
4-9/16" |
5-5/16" |
5-3/4" |
9" |
4-1/4" |
5/8" |
8 on 7-1/2" |
28 |
5 |
| 6" |
5-9/16"
Dia. |
23" |
4-3/4" |
5-1/16" |
5-13/16" |
9" |
11" |
6-1/4" |
3/4" |
8 on 9-1/2" |
59 |
5 |
| 8" |
7-9/16"
Dia. |
28-1/2" |
5-1/8" |
5-7/16" |
6-3/16" |
11" |
13-1/2" |
8-1/4" |
3/4" |
8 on 11-3/4" |
87 |
5 |
| 10" |
9-1/2"
Dia. |
31-3/4" |
5-3/8" |
5-11/16" |
6-7/16" |
13-1/2" |
16" |
10-3/8" |
7/8" |
12 on 14-1/4" |
136 |
5 |
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| Glass Options |
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Code Number |
Thickness |
Max. Int. Temp. |
Max. Con. Temp. |
| Pyrex Clear (Borosilicate) Glass |
P |
1/4" |
554°F |
446°F |
| Cobalt Blue Glass |
CB |
3/16" |
554°F |
446°F |
| Quartz Clear Glass |
Q |
1/4" |
2048°F |
1600°F |
| Temperature ratings apply only for the operating conditions of the glass. Ratings for housings vary on type of steel. |
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