Screwplug Immersion Heaters

Screwplug immersion heaters are electric heating components designed to add heat directly to liquids in compatible equipment through a threaded tank or vessel opening. Commonly specified by facility maintenance, commercial, and process-heating teams, these heaters pair defined wattage, electrical requirements, NPT connection sizes, and plug-and-sheath materials to suit a matching installation.

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Helpful Buying Guide

How to Choose a Screwplug Immersion Heater

Match the heater to the equipment connection and electrical system first, then compare heating output, construction, and thermostat configuration. The options represented here range from compact 120V units to higher-output three-phase heaters for compatible liquid-heating setups.

Visual Guide

Popular examples in this category

Steel Screwplug Immersion Heater with Thermostat, 1000W, 120VSteel Screwplug Immersion Heater with Thermostat, 1000W, 120VWBB383081Steel Screwplug Immersion Heater, 5 kW, 240VSteel Screwplug Immersion Heater, 5 kW, 240VWBB383010Brass Plug Copper Sheath Screwplug Immersion Heater, 7,500W, 240VBrass Plug Copper Sheath Screwplug Immersion Heater, 7,500W, 240VWBB383067750W 120V Stainless Steel Screwplug Immersion Heater with Thermostat750W 120V Stainless Steel Screwplug Immersion Heater with ThermostatWBB383024
Use Cases

Direct liquid heating in compatible equipment

These heaters are intended to place an electric heating element in liquid through a threaded tank or vessel connection. They are used by maintenance, facility, commercial, and process-heating teams.

How to Choose

Start with connection and power

Confirm the required NPT opening, voltage, and phase before comparing wattage. Available examples include 1 in., 1-1/4 in., 2 in., and 2-1/2 in. NPT connections.

Applications

Match capacity to the setup

Heating outputs in this selection run from 475W to 18 kW. Choose a heater with the specified capacity for the compatible equipment or immersion-heating application.

Additional Info

Compare construction and control

Plug and sheath constructions include steel, 304 stainless steel, and brass plug with copper sheath. Many listed configurations include an integrated or built-in thermostat.

475W–18 kWHeating output range

Listed capacities span compact to higher-output immersion-heating configurations.

120V, 240V, 480VVoltage options

Available examples cover 120V single-phase and 240V or 480V three-phase systems.

1–2-1/2 in.NPT connection sizes

Threaded connection sizes represented include 1, 1-1/4, 2, and 2-1/2 inches.

3Construction types

Compare steel, 304 stainless steel, or brass plug with copper sheath construction.

Comparison Guide

Compare screwplug immersion heater configurations

Use this overview to narrow choices based on the actual connection, power, construction, and control features represented in the category.

Configuration groupWhat is representedKey selection points
120V single-phase heaters475W, 500W, 750W, 1000W, and 1500W options; 1 in., 1-1/4 in., and 2 in. NPT connectionsMatch the threaded opening, specified wattage, and 120V single-phase requirement.
240V three-phase heaters4 kW, 5 kW, and 7,500W options; 2 in. NPT connectionsConfirm compatible 240V three-phase service and compare steel or brass plug/copper sheath construction.
480V three-phase heaters7,500W, 10 kW, and 18 kW options; 2 in. or 2-1/2 in. NPT connectionsMatch the available 480V three-phase system, connection size, heating capacity, and thermostat requirement.
Planning Guide

Plan the right fit before choosing

Connection and electrical planning

Verify the installation requirements before selecting

A screwplug heater must match the threaded opening in the equipment and the available electrical system. The represented products use NPT connections and are configured for either 120V single-phase power or 240V and 480V three-phase power.

  • Match the NPT connection: 1 in., 1-1/4 in., 2 in., or 2-1/2 in.
  • Confirm whether the application requires 120V single-phase, 240V three-phase, or 480V three-phase power.
  • Compare the listed heating output, from 475W through 18 kW.
Construction and temperature control

Select the listed material combination and thermostat configuration

Construction varies across the selection. Steel plug and sheath, 304 stainless steel plug and sheath, and brass plug with copper sheath configurations are represented. Thermostat-equipped options support temperature-controlled operation in compatible setups.

  • Steel construction is available in multiple wattage and voltage configurations.
  • 304 stainless steel options are represented in 500W, 750W, and 1500W 120V configurations.
  • Brass plug and copper sheath options are represented in 4 kW, 7,500W, and 18 kW configurations.
  • Check whether thermostat-based operation is included for the selected heater.
FAQ

Common questions before buying

What connection sizes are available?

The represented heaters use 1 in., 1-1/4 in., 2 in., and 2-1/2 in. NPT threaded connections.

What electrical configurations are represented?

Options include 120V single-phase, 240V three-phase, and 480V three-phase configurations.

Do screwplug immersion heaters include thermostats?

Many listed models include an integrated, built-in, or thermostat-equipped design. Check the individual configuration because thermostat inclusion varies.

What materials are represented?

The selection includes steel plug and sheath, 304 stainless steel plug and sheath, and brass plug with copper sheath construction.

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