ASA-style smooth face flanges mate with standard ASA 150-lb. O-ring flanges for use to 10-8 Torr. These ASA flanges are fabricated from type 304 stainless steel with a surface finish of 32 micro-inches on both sides. All corners are chamfered 45°. Four flange sizes are offered, blank or bored, to fit four standard tube sizes.
Applications include use with various types of vacuum chambers, manifolds, furnaces, diffusion pump stations, valves, test equipment, pumps, special viewports, and a variety of experimental devices.
NOTE: Mode No. ASA-5B matches the foreline connector for a 6" diffusion pump. ASA-6B matches the top flange of a 2" diffusion pump, while ASA-9B and ASA-11B match the top flange of 4" and 6" diffusion pumps, respectively. Flanges may be welded or brazed to the connecting tubulation. Contact Thermionics for custom ASA assemblies.
|
Bolt Holes |
|
Model
No. |
Type |
OD |
Bolt
Circle |
No. |
Dia. |
Thickness |
Bore |
ID |
Set Back |
Price |
ASA-5 |
Blank |
5.00" |
3.88" |
4 |
.625" |
.50" |
-- |
-- |
-- |
Contact |
ASA-5B |
Bored |
5.00" |
3.88" |
4 |
.625" |
.50" |
2.01"
|
1.94"
|
.340" |
Contact |
ASA-6 |
Blank |
6.00" |
4.75" |
4 |
.750" |
.50" |
-- |
-- |
-- |
Contact |
ASA-6B |
Bored |
6.00" |
4.75" |
4 |
.750" |
.50" |
3.50" |
3.43"
|
.340" |
Contact |
ASA-9 |
Blank |
9.00" |
7.50" |
8 |
.687" |
.50" |
-- |
-- |
-- |
Contact |
ASA-9B |
Bored |
9.00" |
7.50" |
8 |
.687" |
.50" |
6.02"
|
5.88"
|
.340" |
Contact |
ASA-11 |
Blank |
11.00" |
9.50" |
8 |
.812" |
.75" |
-- |
-- |
-- |
Contact |
ASA-11B |
Bored |
11.00" |
9.50" |
8 |
.812" |
.75" |
8.02"
|
7.88"
|
.340 |
Contact |
For a optional O-ring grooves in
ASA flanges, use suffix "/OR," and add: