About this category
Heatrex immersion heaters put electric heat directly into the fluid — tubular elements immersed in the tank, vessel, or pipe, with the sheath alloy matched to what they heat — and the first selection is the mounting style: how the heater meets the tank. A flanged heater bolts to a matching flange on a tank or vessel nozzle — the choice for larger heaters, higher pressures, ASME-code vessels, and hazardous-area service; a screw-plug heater threads into an NPT coupling — compact and economical for smaller tanks and lower-pressure service; and an over-the-side heater drops in through the top of an open tank so it can be added or removed without draining. Pick the mounting style by the tank first, then the alloy, kW, and watt density — Prater Technical works with you to spec the right Heatrex immersion heater.
Choose an immersion heater by mounting style
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Aspeq Heating Group · Immersion Heaters
Flanged Immersion
Bolts to a tank/vessel nozzle flange — larger kW, higher pressure, ASME-code & hazardous-area service
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Screw-Plug Immersion
Threads into an NPT coupling — compact & economical for smaller tanks and lower-pressure service
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Over-the-Side Immersion
Drops in through the top of an open tank — add or remove without draining, retrofit-friendly
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Industries Served
Oil & Gas
Chemical & Petrochemical
Water & Wastewater
Food & Beverage
Power Generation
Heat-Transfer / Thermal Oil
Territory Coverage
New York: NYC and Long Island
New Jersey: Full state
Maryland: Full state
Delaware: Full state
Virginia: Northern VA
New Jersey: Full state
Maryland: Full state
Delaware: Full state
Virginia: Northern VA
Territory detail above applies to Heatrex and the other Aspeq Heating Group brands (Indeeco, Accutherm, Solar Products). Hi-Heat and other manufacturer lines have their own coverage — see each brand’s page.
Specifications compiled by Prater Technical Partners from Heatrex product datasheets.