Yellow Jacket 78012 Oil Burner Connector 12 in

Product Description

The YELLOW JACKET 78012 is a 12-inch oil burner connector designed to link oil burner assemblies to fuel supply lines in residential and light commercial heating systems. It features a 3/8-inch male flare on one end and a 1/4-inch NPT male fitting on the other, making it a direct-fit flexible connector for standard oil-fired heating installations. The reinforced rubber hose construction absorbs noise and vibration, reducing stress on rigid piping connections during burner operation. Built to a minimum burst pressure of 3000 psi and rated for a maximum working pressure of 600 psi, this connector is built for reliable service under demanding heating-system conditions.

This connector is suited for oil burner installations in residential and light commercial forced-air furnaces and boilers that use fuel oil. It is installed between the oil burner and the supply line, typically during new equipment installation or as a replacement when an existing connector shows wear, cracking, or leaking. The flexible design accommodates minor misalignment between the burner and the fuel supply fitting, simplifying installation in tight mechanical spaces.

Key Features

• 12-inch length provides flexible reach between oil burner and fuel supply line
• 3/8-inch male flare x 1/4-inch NPT male end fittings for standard oil burner connections
• Minimum burst pressure of 3000 psi with a 600 psi maximum working pressure rating
• Operating temperature range of -20 to 180 degrees F for year-round heating system use
• Reinforced rubber hose dampens noise and vibration at the burner connection point
• Made in the USA

Compatibility

Designed as an OEM-style replacement flexible connector for residential and light commercial oil-fired furnaces and boilers using standard 3/8-inch male flare and 1/4-inch NPT male fuel line connections.

Installation Notes

Installation is typically performed by a licensed oil burner technician or plumber familiar with fuel oil systems. Shut off the fuel supply valve and relieve line pressure before disconnecting any existing connector. Inspect mating fittings for thread damage or debris before installing the new connector, and verify all connections are leak-free using an approved leak-detection method before returning the system to service. Follow applicable local codes and NFPA 31 requirements for oil-fired equipment installation.

Technical Specifications

• Length: 12 inches
• Inlet Connection: 3/8 inches Male Flare
• Outlet Connection: 1/4 inches NPT Male
• Maximum Working Pressure: 600 psi
• Minimum Burst Pressure: 3000 psi
• Operating Temperature Range: -20 to 180 degrees F
• Hose Material: Reinforced Rubber
• Country of Origin: United States

Standard Information

• Brand: YELLOW JACKET
• Manufacturer Part Number: 78012