Tempco
Tempco TSP02204 Screw Plug Immersion Heater 17-5/8 in 475 W 120 V
A 475 W screw-plug immersion heater with steel sheath, 120 V supply, 20.5 W/sq in density and 60–250 °F control range
- 475 W output provides rapid liquid heating
- 5 W/sq in density balances efficiency and element life
- 60–250 °F range covers most process needs
- 1 in NPT plug fits standard tank openings
- NEMA 1 enclosure protects wiring in dry areas
Screw Plug Immersion Heater 475 W
The Tempco TSP02204 is a screw plug immersion heater rated at 475 W for 120 V AC single-phase supply. It suits industrial tanks or process vessels that need direct liquid heating within a 60 °F to 250 °F control range. The 1 in NPT fitting allows direct installation into a matching threaded port. Buyers who need a flanged or circulation heater will require a different product type.
Steel sheath and NEMA 1 enclosure
The sheath and screw plug are both steel, giving a watts density of 20.5 W/sq in for the heated zone. A NEMA 1 enclosure protects the wiring compartment in indoor, non-hazardous locations. Minimum immersion depth is 12 9/16 in, so the tank must hold enough liquid to cover that length. The overall length is 17 5/8 in, which sets the clearance needed above the vessel.
Silicone resin seal and recompacted bends
Silicone resin element seals are fitted as standard to resist moisture ingress at the sheath exit. Recompacted element bends restore insulation resistance after forming, reducing the risk of early failure. Corrosion-resistant electrical wiring hardware extends service life in aggressive fluids. No thermostat, temperature controller or mounting gasket is included in the package.
Highlights
- 475 W output provides rapid liquid heating
- 5 W/sq in density balances efficiency and element life
- 60–250 °F range covers most process needs
- 1 in NPT plug fits standard tank openings
- NEMA 1 enclosure protects wiring in dry areas
Specifications
| Brand | TEMPCO |
|---|
Questions about this item
What does the 1 in NPT screw plug mean for tank mounting?
The heater uses a 1 in National Pipe Taper thread so it seals directly into a matching 1 in NPT opening without extra adapters.
What are the overall length and minimum immersion depth for this 17-5/8 in heater?
Overall length is 17-5/8 in and the element must be submerged at least 12-9/16 in to operate safely.
How is the temperature set on the 60 to 250 Degrees F control range?
Adjust the built-in thermostat dial or screw to the desired set point within the 60 to 250 Degrees F range before applying power.
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