Temperature Range |
Max. Temp. To Which Tube Can Be Exposed |
Tube Specifications |
Approx. Throttling Range Min.–Max. |
Approx. Temperature Change Per Turn Of Adjusting Screw |
Standard Position Of Bushing Or Union On Tube (If Required) |
* Standard Thermowell available If Required |
Code Number |
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Fahrenheit (°F) |
Centigrade (°C) |
Active Length (H) |
Inactive Length (J) |
Overall Length (A) |
Diameter (B) |
Material |
°F |
°C |
°F |
°C |
Drawing |
Immersion Length* |
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Smallest Throttling Ranges – Smallest Adjustable Ranges |
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-50 – 200 |
0 – 90 |
300° F |
17” |
4 ¾” |
21 ¾” |
¾” |
Stn. Stl. |
4-12 |
2 - 6 |
28 |
16 |
18” |
A-709 |
U = 17” |
320b |
120 – 300 |
50-150 |
4-12 |
2 –7 |
30 |
17 |
322a |
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Medium Throttling Ranges – Medium Adjustable Ranges |
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60 – 300 |
20 - 150 |
300°F |
13” |
4 ¾” |
17 ¾” |
¾ “ |
Stn. Stl. |
5-15 |
3-8 |
40 |
22 |
14” |
A-709 |
U = 13” |
331a |
220 – 450 |
100 – 230 |
700°F |
13” |
4 ¾” |
17 ¾” |
¾ “ |
Stn. Stl. |
5-15 |
3-8 |
38 |
21 |
14” |
A-709 |
U = 13” |
332b |
355 – 575 |
180 – 300 |
700°F |
13” |
4 ¾” |
17 ¾” |
¾ “ |
Stn. Stl. |
5-15 |
3-8 |
37 |
20 |
14” |
A-709 |
U = 13” |
333b |
485 – 700 |
250 – 370 |
700°F |
13” |
4 ¾” |
17 ¾” |
¾ “ |
Stn. Stl. |
5-15 |
3-8 |
36 |
20 |
14” |
A-709 |
U = 13” |
334 |
645 – 850 |
340 – 455 |
1400°F |
13” |
4 ¾” |
17 ¾” |
¾ “ |
Stn. Stl. |
5-15 |
3-8 |
35 |
19 |
14” |
A-709 |
U = 13” |
335 |
800 - 1000 |
430 – 540 |
1400°F |
13” |
4 ¾” |
17 ¾” |
¾ “ |
Stn. Stl. |
5-15 |
3-8 |
34 |
19 |
14” |
A-709 |
U = 13” |
336 |
950 - 1150 |
510 – 620 |
1400°F |
13” |
6 ¾” |
19 ¾” |
¾ “ |
Stn. Stl. |
5-15 |
3-8 |
33 |
18 |
14” |
A-709 |
U = 13” |
337 |
1100-1300 |
590 – 700 |
1400°F |
13” |
6 ¾” |
19 ¾” |
¾ “ |
Stn. Stl. |
5-15 |
3-8 |
33 |
18 |
14” |
A-709 |
U = 13” |
338 |
1200 - 1400 |
650 - 760 |
1400°F |
13” |
6 ¾” |
19 ¾” |
¾ “ |
Stn. Stl. |
5-15 |
3-8 |
33 |
18 |
14” |
A-709 |
U = 13” |
339 |
Widest Throttling Ranges – Widest Adjustable Ranges |
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35 – 300 |
0 – 150 |
300° F |
8 ½ “ |
5 ½ “ |
14 “ |
¾ “ |
Stn. Stl. |
7-22 |
4-12 |
62 |
34 |
9 ½ “ |
A-709 |
U = 8 ½ “ |
341a |
150 – 500 |
65 – 260 |
700° F |
8 ½ “ |
5 ½ “ |
14 “ |
¾ “ |
Stn. Stl. |
7-22 |
4-12 |
50 |
33 |
9 ½ “ |
A-709 |
U = 8 ½ “ |
342 |
370 –700 |
180 – 370 |
700° F |
8 ½ “ |
5 ½ “ |
14 “ |
¾ “ |
Stn. Stl. |
7-22 |
4-12 |
55 |
30 |
9 ½ “ |
A-709 |
U = 8 ½ “ |
343 |
580 – 900 |
300 – 480 |
1400° F |
8 ½ “ |
5 ½ “ |
14 “ |
¾ “ |
Stn. Stl. |
7-22 |
4-12 |
53 |
29 |
9 ½ “ |
A-709 |
U = 8 ½ “ |
344 |
790 – 1100 |
420 – 590 |
1400° F |
8 ½ “ |
5 ½ “ |
14 “ |
¾ “ |
Stn. Stl. |
7-22 |
4-12 |
52 |
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