Generalaire RF-4 Oil Filter Cartridge Fulflo FB4

Product Description

The GENERALAIRE RF-4 is a microfiber filter cartridge designed as a direct replacement element for the Fulflo FB4 oil filter housing. This cartridge removes particulates from oil lines in heating and fuel delivery systems, protecting downstream components from contamination. The microfiber construction provides efficient mechanical filtration, trapping fine particles that can damage burner nozzles, valves, and fuel pumps. Installation is handled by licensed oil heating technicians and service professionals as part of routine filter maintenance or oil system servicing.

The RF-4 cartridge is suited for residential and light commercial oil-fired heating applications where the Fulflo FB4 filter housing is installed inline on the fuel supply line. Replacing the filter element on a scheduled basis keeps fuel delivery consistent and helps prevent premature wear on burner components. This cartridge fits directly into the existing FB4 housing, making it a straightforward field swap during annual tune-up visits or any time elevated pressure drop indicates a clogged element.

Key Features

• Microfiber filter media for effective particulate removal from oil fuel lines
• Cartridge-style element drops into the Fulflo FB4 housing without additional hardware
• Designed as a direct OEM-style replacement to maintain original filtration performance
• Supports routine preventive maintenance on oil-fired heating systems

Compatibility

Designed as a direct replacement cartridge for the Fulflo FB4 oil filter housing.

Installation Notes

Installation should be performed by a qualified oil heating technician. Shut off the oil supply valve and relieve any pressure in the line before opening the filter housing. Dispose of the used cartridge and any residual oil in accordance with local environmental regulations. After reassembly, open the supply valve, check for leaks, and bleed the system as needed before restoring burner operation.

Technical Specifications

• Filter Element Type: Cartridge
• Media Type: Microfiber

Standard Information

• Brand: GENERALAIRE
• Manufacturer Part Number: RF-4