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

Fahrenheit

(F)

Centigrade

(C)

Active

Length

(H)

Inactive

Length

(J)

Overall

Length

(A)

Diameter

(B)

Material

F

C

F

C

Drawing

Immersion

Length*

Smallest Throttling Ranges – Smallest Adjustable Ranges

-50 – 200

0 – 90

300 F

17”

4 ”

21 ”

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

Medium Throttling Ranges – Medium Adjustable Ranges

60 – 300

20 - 150

300F

13”

4 ”

17 ”

Stn. Stl.

5-15

3-8

40

22

14”

A-709

U = 13”

 331a

220 – 450

100 – 230

700F

13”

4 ”

17 ”

Stn. Stl.

5-15

3-8

38

21

14”

A-709

U = 13”

332b

355 – 575

180 – 300

700F

13”

4 ”

17 ”

Stn. Stl.

5-15

3-8

37

20

14”

A-709

U = 13”

333b

485 – 700

250 – 370

700F

13”

4 ”

17 ”

Stn. Stl.

5-15

3-8

36

20

14”

A-709

U = 13”

334

645 – 850

340 – 455

1400F

13”

4 ”

17 ”

Stn. Stl.

5-15

3-8

35

19

14”

A-709

U = 13”

335

800 - 1000

430 – 540

1400F

13”

4 ”

17 ”

Stn. Stl.

5-15

3-8

34

19

14”

A-709

U = 13”

336

950 - 1150

510 – 620

1400F

13”

6 ”

19 ”

Stn. Stl.

5-15

3-8

33

18

14”

A-709

U = 13”

337

1100-1300

590 – 700

1400F

13”

6 ”

19 ”

Stn. Stl.

5-15

3-8

33

18

14”

A-709

U = 13”

338

1200 - 1400

650 - 760

1400F

13”

6 ”

19 ”

Stn. Stl.

5-15

3-8

33

18

14”

A-709

U = 13”

339

Widest Throttling Ranges – Widest Adjustable Ranges

35 – 300

0 – 150

300 F

8 “

5 “

14 “

Stn. Stl.

7-22

4-12

62

34

9 “

A-709

U = 8 “

341a

150 – 500

65 – 260

700 F

8 “

5 “

14 “

Stn. Stl.

7-22

4-12

50

33

9 “

A-709

U = 8 “

342

370 –700

180 – 370

700 F

8 “

5 “

14 “

Stn. Stl.

7-22

4-12

55

30

9 “

A-709

U = 8 “

343

580 – 900

300 – 480

1400 F

8 “

5 “

14 “

Stn. Stl.

7-22

4-12

53

29

9 “

A-709

U = 8 “

344

790 – 1100

420 – 590

1400 F

8 “

5 “

14 “

Stn. Stl.

7-22

4-12

52

29

9 “

A-709

U = 8 “

345

950 – 1200

510 – 680

1400 F

8 “

7 “

15 “

Stn. Stl.

7-22

4-12

51

28

9 “

A-709

U = 8 “

346a

1100 – 1400

590 – 760

1400 F

8 “

7 “

15 “

Stn. Stl.

7-22

4-12

50

28

9 “

A-709

U = 8 “

347a

1300 – 1600

700 – 870

2000 F

8 “

9 “

17 “

** “

Inconel

8-24

4-13

52

29

9 “

None

None

348a

1500 - 1800

815 - 985

2000 F

8 “

9 “

17 “

** “

Inconel

8-24

4-13

52

29

9 “

None

None

348a

 *To be used only where full immersion length, “U”, will be exposed to the heat. 

**Also available in .840” diameter, heavier wall.

                                                                                                                                                                                      

The fittings shown to the left are optional and must be specified if desired.  It is essential that the exact active length of the tube is exposed to the heat source.  If the bushing or union in the standard position will not permit this, order with a shorter or longer “C” or “D” dimension.  See the Table above.  Also specify size, ” or 1” NPT.  A ”  NPT is required for wells; a 1” NPT is required on .840” diameter tubes.  The flange is fastened with a set screw.

 hrasquare.gif (4863 bytes)hralong.gif (8226 bytes)                                                                                                                                                                                                                                                       Typical Installation

*Ordering Information

         1.        Model and Code Number

         2.        Temperature Range, F or C

        3.        Max. or Min. Temperature on Tube

        4.        Modifications or Fittings, if any.

           
 

     

 

 

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