Boshart BF-42 Flare Union Coupling Fitting

Boshart BF-42 Flare Union Coupling Fitting

The Boshart BF-42 Flare Union Coupling is a rough-in fitting designed for plumbing and heating applications involving gas, oil, air and water lines. This union-style flare coupling is applicable with aluminum, brass, copper and steel tubing, making it a versatile choice for contractors working across multiple tubing materials on a single job site. The BF-42 is available in 3/8" and 1/2" sizes, giving installers the flexibility to standardize on a single flare-union platform across common residential and light-commercial tubing runs. Flare fittings like the BF-42 use a mechanical flare connection rather than solvent weld or sweat joints, allowing the coupling to be disassembled and reassembled many times without compromising the seal at the joint. This makes the BF-42 well suited for service lines and connections that may need to be broken down for maintenance, appliance swaps, or future modifications without cutting into existing tubing runs.

Key Features

• Available Sizes: Offered in 3/8" and 1/2" sizes to match common tubing diameters used in gas, oil, air and water service lines.
• Flare Connection: Mechanical flare-style union joint that seals reliably and can be taken apart and reconnected repeatedly without affecting seal integrity.
• Multi-Media Compatibility: Suitable for use with gas, oil, air and water lines in plumbing and heating installations.
• Broad Tubing Compatibility: Applicable with aluminum, brass, copper and steel tubing, giving installers flexibility when transitioning between tubing types.
• Union Design: Union-style coupling body allows the connection to be broken and remade in the field for service, repair, or reconfiguration without disturbing adjacent joints.
• Reusable Seal: Engineered to maintain a consistent seal through repeated assembly and disassembly cycles, reducing the need for fitting replacement during routine service work.

Technical Specifications

• Country of Origin: China
• Prop 65 Warning: Lead
• Packaging: 25 ea
• Available Sizes: 3/8", 1/2"

Typical Applications

• Residential and Commercial Rough-In Plumbing
• Gas and Oil Line Service Connections
• Compressed Air Line Assembly
• Water Supply Tubing Connections
• Heating System Tubing Runs
• Serviceable Joints Requiring Periodic Disassembly

Why Boshart?

Boshart supplies rough-in plumbing fittings built for the demands of professional installation and service work. The BF-42 flare union coupling is designed to hold a reliable seal across repeated assembly cycles, giving plumbers and contractors a dependable fitting for connections that need to be accessed again down the road. Offered in 3/8" and 1/2" sizes and packaged 25 ea for stocking trucks and service vehicles, the BF-42 is a practical addition to any rough-in fitting inventory for gas, oil, air and water tubing work.