Fairview 426 Brass Flare Union Coupling, 3/8" Tube OD.
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Fairview 426 Brass Flare Union Coupling is a flare-to-flare union designed for 3/8" Tube OD connections. The coupling is brass and uses SAE-style 45° flare fittings for tube-to-tube joining. Note: NOT TO BE USED IN POTABLE WATER SYSTEMS.
Key Features
- Brass flare union coupling for tube-to-tube connections
- For 3/8" Tube OD applications
- SAE-style 45° flare connection type (flare-to-flare union)
- Designed as a union to simplify tube connection and service access
Intended Use
- Refrigeration lines (where flare union fittings are used)
- LP-gas and natural gas service (where rated components are specified)
- Non-potable fuel and gas applications using SAE 45° flare connections
- General tube-to-tube plumbing systems that use 3/8" OD tube and flare unions (non-potable use only)
Product Details
- Product name: Fairview 426 Brass Flare Union Coupling, 3/8" Tube OD.
- SKU: 687-426
- Tube size: 3/8" Tube OD
- Connection style: Brass flare union (tube-to-tube)
- Material: Brass
- Important use note: NOT TO BE USED IN POTABLE WATER SYSTEMS
Parts Desk Insights
Best Use Case: Use when you need to join two sections of 3/8" OD tube using a brass flare union (SAE 45° flare style). This is commonly chosen for serviceable tube connections where you want a secure flare interface and a union-style connection.
Common Issues: Most leaks with flare unions come from mis-matched flare types/angles, tubing not flared correctly, or mating surfaces contaminated/damaged. Before assembly, confirm both tubes are flared to the correct standard and that the flare faces seat cleanly, then tighten evenly without over-stressing the flare.
Related Products & Accessories
- Browse flared union and tube-fitting connections (category) - No additional related product data was provided for this item—browse the fittings & valves assortment for matching flare nuts/unions by tube OD and flare style.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
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