Watlow Heater Catalog

Reference Data

Tubular Elements and Assembly Selection Guide

Supplemental Applications Chart (Continued)

WATROD Element

FIREBAR Element

Max.

Max. Watt

Max. Watt

Operating

Heated Material

Temperature

Density

Sheath Material

Density

Sheath Material

°F

(°C)

W/in 2 (W/cm 2 )

W/in 2

(W/cm 2 )

Miscellaneous oils: Draw bath

600

(315)

23

(3.6) (2.3) (7.7) (3.6) (2.5) (4.6) (2.4) (3.6) (6.2) (6.2) (3.6) (3.1) (6.2) (6.2) (4.3) (0.8) (1.6) (3.6) (3.6) (3.1) (9.3) (9.3) (9.3) (9.3) (9.3) — (6.2) (1.6)

Steel Steel Steel Steel Steel

30

(4.6) (2.3) (9.3) (4.6) (3.6) (6.2) (3.1) (4.6) N/A N/A N/A (4.6) (7.7) (7.7) (5.5)

304 SS 304 SS 304 SS 304 SS 304 SS 304 SS 304 SS 304 SS 304 SS 304 SS Alloy 800 Alloy 800 304 SS Alloy 800 Alloy 800 Alloy 800 Alloy 800 304 SS 304 SS 304 SS Alloy 800 Alloy 800 Alloy 800 Alloy 800 — N/A N/A N/A

Hydraulic Linseed Mineral

—

—

15 3

15 3

150 200 400 400 150 200 212 212 160 212 212 140 720 212 300 500 700 600 212 150 300 212 212 212 212 212 —

(65) (93)

50 23 16 30

60 30 23 40 20 30

(204) (204)

Vegetable/shortening

304 SS

Paraffin or wax (liquid) Perchloroethylene Potassium chlorate Potassium chloride Potassium hydroxide Sodium acetate Sodium cyanide Sodium hydride Sodium hydroxide Sodium phosphate Soap, liquid

(65) (93)

16 23 40 40 23 20 40 40 28 — 40 10 10 23 23 20 60 60 60 60 48 5

Steel Steel

(100) (100)

316 SS 316 SS

N/A N/A N/A

(71)

Alloy 400

(100) (100)

304 SS

30 50 50 36 — 50

Steel

(60)

Alloy 800 Alloy 800

(382)

—

See Caustic Soda

—

(100) (148) (260) (371) (315) (100)

Alloy 800 Alloy 800

(7.7)

Steam, flowing

a

a

5-10

(0.8-1.6) Alloy 800

a

a

Alloy 800 Alloy 800

a

a

Sulfur, molten

12 30 30 25 45 90 90 45

(1.8) (4.6) (4.6) (3.8)

Toluene

Steel Steel

Trichlorethylene

(65)

Turpentine

(148)

304 SS

Water

Clean

(100) (100) (100) (100) (100)

Alloy 800

(7)

Deionized

316 SS (passivated) 316 SS (passivated)

(14) (14)

Demineralized

Potable Process

Alloy 800 Alloy 800

(7)

Contact Watlow

a Contact your Watlow representative. c Per API standards.

548