Watlow Heater Catalog

Circulation Heaters

Max. Operating Temperatures

Typical Max. Watt Densities

Circulation Heaters

Sheath Materials

°F

°C

W/in 2

W/cm 2

Page

Circulation Heaters

316/316L stainless steel, Inconel ® 625, super duplex 2507 stainless steel 316L stainless steel

HYDROSAFE ® Heat Exchanger

297

572

300 N/A

N/A

STARFLOW™

301

1000 1600 1200

537

30

4.6

Alloy 800/840 Stainless steel

870 120 650 120 400 120 175 120

18.6 18.6 18.6 18.6

WATROD™ and FIREBAR ®

303

Steel

750 350 350 750

Alloy 800 Alloy 800

175 400 870 100

60 23 90

9.3 3.6

Booster Heaters

358

Steel

Engine Preheaters

360

Alloy 800

1600

13.9

FLUENT ® In-line

363

444 stainless steel (substrate tube), 316L stainless steel (baffle and fitings)

212

450

70

(in water)

295