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Watlow
Watlow FIREROD Immersion Heater
Quote on request
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FIREROD immersion; Alloy 800; to 300 W/in²; ¾ in NPT. RFQ + selection help.
Download datasheet PDF
RFQ cart holds BOM lines only. Submit for engineering quote.
Key parameters
Mounting
Horizontal through-the-wall tank mounting
Heater Type
FIREROD cartridge immersion heater with Alloy 800 sheath
Max Watt Density
Up to 300 W/in² (46.5 W/cm²); water applications typically 150–300 W/in²
Max Voltage
240 / 480 VAC
Max Water Temperature
212 °F (100 °C) at atmospheric pressure
Process Fitting
¾ in NPT double-threaded stainless fitting, 1⅜ in (34.9 mm) long
Fits compact through-the-wall tank heating where you need a Watlow FIREROD immersion heater with Alloy 800 sheath, up to 300 W/in², and a ¾ in NPT double-threaded fitting.
Key advantages
- Type — FIREROD cartridge immersion heater, Alloy 800 sheath
- Watt density — Up to 300 W/in² (46.5 W/cm²); water typically 150–300 W/in²
- Voltage — 240 / 480 VAC
- Fitting — ¾ in NPT double-threaded stainless, 1⅜ in (34.9 mm) long
- Leads — 6 in solid copper pins with silicone boots; silicone-sealed lead end
Typical applications
- Plastic reclamation tanks.
- Food preparation and lab equipment.
- Replacing larger screw-plug heaters in tight spaces.
Selection guide
- Media — Water / ≥90% water-soluble vs viscous oils (lower W/in²)
- V / W — 240 vs 480 VAC
- Mounting — Horizontal through-wall
- Temperature — Water to 212 °F (100 °C) atmospheric
Common mistakes
- High watt density in viscous oils.
- Dry-firing above liquid level.
- Wrong NPT engagement length.
When to RFQ / what to tell us
- Media, T, kW/V.
- Quantity and ship-to.
Request a Quote · Get selection help
Specs
| Spec | Value |
|---|---|
| SKU | 21458 |
| Brand | Watlow |
| Model | FIREROD Immersion Heater |
| Product type | Immersion Heater |
| Heater type | FIREROD cartridge immersion heater with Alloy 800 sheath |
| Max watt density | Up to 300 W/in² (46.5 W/cm²); water applications typically 150–300 W/in² |
| Max voltage | 240 / 480 VAC |
| Max water temperature | 212 °F (100 °C) at atmospheric pressure |
| Process fitting | ¾ in NPT double-threaded stainless fitting, 1⅜ in (34.9 mm) long |
| Leads | 6 in (152 mm) solid copper pins with silicone rubber boots; silicone-sealed lead end |
| Insulation | Compacted MgO dielectric |
| Sheath | Alloy 800 standard; other sheath materials MTO |
| Recommended media | Water and ≥90% water-soluble solutions; low watt density for viscous oils |
| Mounting | Horizontal through-the-wall tank mounting |
| Applications | Plastic reclamation, food preparation, lab equipment |
| Features | High watt density in small envelope; moisture-resistant silicone seal |
Documents
- Watlow FIREROD immersion documentation — request current OEM PDF on RFQ — request current OEM PDF on RFQ
FAQ
Q: Max water temperature? A: 212 °F (100 °C) at atmospheric pressure.
Q: Fitting? A: ¾ in NPT double-threaded stainless fitting.
Q: What should I send for a quote? A: Media/T/kW/V, quantity, ship-to.
Links
| Parameter | Value |
|---|---|
| Mounting | Horizontal through-the-wall tank mounting |
| Heater Type | FIREROD cartridge immersion heater with Alloy 800 sheath |
| Max Watt Density | Up to 300 W/in² (46.5 W/cm²); water applications typically 150–300 W/in² |
| Max Voltage | 240 / 480 VAC |
| Max Water Temperature | 212 °F (100 °C) at atmospheric pressure |
| Process Fitting | ¾ in NPT double-threaded stainless fitting, 1⅜ in (34.9 mm) long |
| Leads | 6 in (152 mm) solid copper pins with silicone rubber boots; silicone-sealed lead end |
| Insulation | Compacted MgO dielectric |
| Resistance Wire | Nickel-chromium, metallurgically bonded conductor pins |
| Sheath Material | Alloy 800 standard; other sheath materials MTO |
| Recommended Media | Water and ≥90% water-soluble solutions; low watt density for viscous oils |
| Applications | Plastic reclamation, food preparation, lab equipment |
| Form Factor | Compact cartridge immersion heater replacing large screw-plug heaters |
| Special Features | High watt density in small envelope; moisture-resistant silicone seal |