Knox Sales Company 481000 Screw Plug Heating Element

Product Description

The KNOX SALES COMPANY 481000 is a screw plug immersion heating element rated at 1500 watts and 120 volts. This type of element threads directly into a tank or vessel fitting, providing resistive heat transfer to a liquid medium such as water. It is a common replacement component in electric water heaters, small storage tanks, and similar hydronic or process heating applications. Installation is typically performed by a licensed plumber or HVAC technician during routine maintenance or equipment servicing.

This screw plug heating element is suited for residential and light commercial electric water heating systems where a 1500-watt, 120-volt element is specified. The screw plug design allows for direct threaded installation into standard element ports, making it a straightforward field replacement. Consult the equipment nameplate and OEM documentation to confirm wattage, voltage, and thread specification before installation.

Key Features

• 1500-watt resistive heating output at 120 volts
• Screw plug configuration for threaded tank or vessel installation
• Designed as a direct replacement immersion element
• Compact form factor suited to standard element port fittings

Compatibility

Designed as an OEM-style replacement screw plug immersion heating element for electric water heaters and storage tanks requiring a 1500-watt, 120-volt screw plug element.

Installation Notes

Installation should be performed by a licensed plumber or qualified technician. Shut off electrical power at the breaker and close the cold water supply valve before removing or installing the element. Drain the tank to below the element port level before unthreading the old element. Ensure proper thread engagement and use an appropriate element wrench to avoid cross-threading or over-tightening the screw plug fitting.

Technical Specifications

• Wattage: 1500 watts
• Voltage: 120 volts
• Element Type: Screw Plug Immersion

Standard Information

• Brand: KNOX SALES COMPANY
• Manufacturer Part Number: 481000