Omega Products 1-445L-S18E-316SS User Manual

Series 445L Standard Threaded Well for Industrial Glass Thermometers

2

1

/

1 – 18 NEF

THREAD

16

/

13

T

LAGGING

EXTENSION

1

THREAD
ALLOWANCE

Q DIA.

U INSERTION LENGTH

S = U + 1

2

P NPT

DIA.

A BULB LENGTH (ACTUAL)

2

3

/

32

DIA.

0.445 DIA. AT
THEORETICAL
OF TAPER

TAPER 0.180/FT

.

11

/

16

END

/

4

1

/

64

49

/

64

45

/

16

9

Application:

Fits liquid-in-glass thermometers made to S.A.M.A.
standards. Tapered bore is made 0.008" oversize to
eliminate possibility of thermometer bulb expanding into
the well, thus preventing removal.

Connection Size:

3

⁄4" NPT and 1" NPT are standard. Other thread sizes

are available upon request.

Series 445L—Lagging Extension Type

Dimensions: inches

To Order

Ext

Thread Stainless Steel Carbon Bulb Ext Lgth Lgth Dia.

P Model Number 304 316 Steel Brass Lgth TAUQ

3

⁄4 NPT 3 /4-445L-S6E-(*) $125 $135 $115 $115 62

1 NPT 1-445L-S6E-(

Specify material type “304SS” for 304 Stainless Steel, “316SS” for 316 Stainless Steel, “CS” for Carbon Steel or

*

“BRASS” for brass. PFA coating available, see page B-16.
Ordering Example: 3/4-445L-S6E-304SS, 304 stainless steel thermowell with

0.445" internal diameter for a glass thermometer, 2
6" nominal bulb length, $125.

For Assistance in Choosing Head and Well Assemblies, See guide on page B-5. These wells are
compatible with OMEGA®NB1, NB2 (page B-8); PR-12, PR-14, and NPT-style probes (page C-93),
as well as DialTemp™ Thermometers (page E-11).

(Specify Model Number)

Materials and Prices

3/4-445L-S9E
3/4-445L-S12E-(
3/4-445L-S18E-(
3/4-445L-S24E-(

1-445L-S9E
1-445L-S12E
1-445L-S18E
1-445L-S24E

-(*) 175 190 115 115 939
) 230 245 220 220 12 3 121⁄8 81⁄16

*

) 290 310 275 275 18 3 181⁄8 141⁄167⁄8

*

) 360 380 340 340 24 3 241⁄8 201⁄167⁄8

*

) $125 $135 $115 $115 62

*

-(*) 175 190 115 115 939

-(*) 230 245 220 220 12 3 121⁄8 81⁄16 1

-(*) 290 310 275 275 18 3 181⁄8 141⁄16 1

-(*) 360 380 340 340 24 3 241⁄8 201⁄16 1

Materials:

Carbon Steel (C-1018); Brass (ASTM B-16),
A.I.S.I. 304, A.I.S.I. 316, Monel

®

. Many other materials

available upon request.

Additional Designs:

Other designs of wells to fit this class of thermometer are
available. These include socket weld, heavy duty and
flanged types.

Metric Models

Available!

See pages

B-33 and B-34

MOST POPULAR

MODELS HIGHLIGHTED!

Nom Lag Bulb Insert Shank

1

1

⁄2 6

1

⁄2 6

3

1

⁄2" Lagging Extension, 2 9⁄16", insertion length and a

⁄4 NPT external thread,

9

⁄8 2

1

1

1

⁄16 —

⁄8 51⁄16

9

⁄8 2

⁄16 —

⁄8 51⁄16 1

7

⁄8

7

⁄8

Shown smaller
than actual size.

Maximum Fluid Velocity—feet per second

Well

Type

3

⁄4"-445S Brass 259 (52.3) 142 (26.4) 55.8 (16.6) 29.8 (12.1) 18.4 (9.5) 12.5 (7.8) 9.0 (6.7) 6.8

and Carbon Steel 352 (94.6) 198 (48.0) 77.5 (30.1) 41.4 (22.0) 27.8 (17.3) 17.3 (14.2) 12.5 (12.1) 9.5

3

⁄4"-445L A.I.S.I. 304 & 316 382 (131) 206 (66.3) 80.9 (41.7) 43.2 (30.2) 26.6 (24.0) 18.1 13.1 9.9

1"-445S Brass 259 (76) 156 (38.5) 61.4 (24.2) 32.8 (17.7) 20.2 (13.9) 13.7 (11.4) 9.9 7.5

and Carbon Steel 352 (137) 215 (69.4) 34.2 (43.6) 45.0 (31.9) 27.7 (25) 18.9 13.6 10.3

1"-445L A.I.S.I. 304 & 316 382 (190) 224 (96.1) 87.8 (60.4) 46.9 (44.1) 28.9 19.7 14.2 10.8

Where single values appear in the velocity tables, these may be considered safe for water, steam, air or gas. In the
shorter insertion lengths, consideration is given to the velocity pressure effect of water flowing at higher velocities. The
values in parentheses, therefore, represent safe values for water flow, while the unbracketed values may be used for
steam, air, gas and similar density fluids.

See Page B-32 for Pressure-Temperature Ratings.

See Introduction to Thermowells,

Section on Velocity, page B-3

Insertion Length — “U”

Material 2

Monel 277 (105) 179 (53.1) 70.3 (33.4) 37.5 (24.3) 23.2 (19.1) 15.7 11.3 8.5

Monel 277 (152) 196 (77.1) 77.2 (48.5) 41.4 (35.4) 25.4 17.2 12.4 9.4

9

⁄16 51⁄16 81⁄16 111⁄16 141⁄16 171⁄16 201⁄16 231⁄16

B-31

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