Heatmax screwplug immersion heaters deliver reliable and efficient heat into a threaded coupling located in the tank wall, vessel, or pipe. The compact design makes Screwplug heaters a perfect fit for small tanks, vessels, or confined spaces.
Our Screwplug heaters can be fully customized to match your specific process requirements—whether for liquids, gases, or demanding thermal environments.
Built in thermostats, thermocouples and other sensors available for convenient installation and temperature control.
Enclosures suitable for NEMA 1, 4, and 4X environments (indoor/outdoor, washdown, corrosive areas) also available.
Looking for Titanium Screwplug Heater? We offer this with a Titanium 2” NPT Screwplug.
NPT Fittings: 1”, 1¼”, 1½”, 2”, 2½”, and 3” sizes available in stainless steel.
Standard British Parallel Pipe fittings: For applications adhering to British standards, our heaters feature Standard British Parallel Pipe (BSPP) fittings available in sizes of 1½” and 2”.
Immersion Length & Cold Section: Fully customizable to meet requirements.
Watt Density: available from 4W/in² to 60W/in². Customizable to the needs of the application.
Sheath Material: Copper, Incoloy 800, Incoloy 840, Inconel 600, 304 and 316L Stainless Steel. Titanium available for 2” NPT screwplugs only.
Controls and Sensors: R Series screwplug heaters can be equipped with thermostats for temperature regulation and/or high-limit control. Alternatively, the R Series can be equipped with high-limit/process thermocouple sensors for precise temperature management by external control systems.
Enclosure Ratings: Type 1 General Purpose, and Type 4 and 4X Moisture Resistant, Outdoor/Washdown options available.
Electro-Polish and Passivation: Available for enhanced cleanliness and corrosion resistance.
