Watlow Heater Catalog

Immersion Heaters

WATROD and FIREBAR Screw Plug Immersion Heaters Optional Moisture Resistant Enclosures

With Double-Pole Thermostat 1 1 / 4 inch NPT–2 WATROD Elements 1 1 / 4 inch NPT–1 FIREBAR Element All 2 and 2 1 / 2 inch NPT screw plugs

With Single-Pole Thermostat 1 and 1 1 / 4 inch NPT–1 WATROD Element

(1) 1.093 in. (28 mm) Dia. Hole

6 ⁄ in. (166.7 mm)

4 ¼ in. (108 mm)

2 ⁄ in. (73 mm) Ref.

1 ⁄ in. (37 mm)

4 ¼ in. (114 mm)

1 ⁄ in. (33.3 mm)

2 ⁄ in. (66.7 mm)

6 ⁄ in. (166.7 mm)

6 in. (152 mm)

Note: The enclosure is not centered on the WATROD screw plug heater.

Note: The enclosure is not centered on the screw plug heater.

With Single-Pole Thermostat All 2 and 2 1 / 2 inch NPT

Without Thermostat

6 ⁄ in. (166.7 mm)

4 ¼ in. (108 mm)

¾ in. NPT Conduit Openings

6 ⁄ in. (166.7 mm)

6 in. (152 mm)

3 ¾ in. (95 mm)

5 ⁄ in. (137 mm)

¾ in. (19 mm)

Note: The enclosure is not centered on the screw plug heater.

2 ⁄ in. (73 mm)

To order: Reference “W” in the Ordering Information section on page 217.

Immersion / 4-3

149