JB T3-4B 1/4 x 1/4 x 1/4 Brass Tee

The JB T3-4B Brass Tee is a high-performance 1/4 x 1/4 x 1/4 flare tee engineered for demanding HVACR refrigeration service. Manufactured in Aurora, Illinois, this brass fitting is machined from premium heavy-duty C360 and C370 brass, ensuring a high-tensile strength that withstands the vibration and mechanical stresses common in industrial line sets. Featuring 1/4 SAE x 1/4 MPT x 1/4 SAE configurations, it provides a reliable transition between male pipe threads and 45-degree flare connections. The forging process used by JB Industries eliminates internal cracking and porosity, a critical factor when handling high-pressure refrigerants like R410A. With long dryseal pipe threads, this tee maximizes sealing surface area and provides sufficient clearance for tightening flare nuts without bottoming out. Designed to meet strict AHRI and SAE J513 standards, the T3-4B is rated for a vacuum and working pressure range capable of supporting up to 5,000 psi depending on system conditions, making it a staple for any veteran contractor?s truck stock.

Key Benefits:

• Premium American-Made Quality: Machined from domestic high-copper brass for superior corrosion resistance and durability compared to low-quality imports.
• Enhanced Sealing Performance: Features dryseal pipe threads and a 45-degree flare seat to ensure leak-proof refrigeration connections.
• High Pressure Rating: Forged construction handles extreme pressure cycles and vacuum pump applications without fatigue.
• Technical Compatibility: Seamlessly integrates with copper, brass, aluminum, and steel tubing across cooling and hydraulic systems.

Common Questions:

What is the thread specification for the middle branch?
The center connection is a 1/4" Male Pipe Thread (MPT), while the two run ends are 1/4" SAE Male Flare connectors.

Is this tee compatible with modern high-pressure refrigerants?
Yes, the heavy-duty forging and material density make it suitable for use with R410A and other high-pressure ACR tube applications.

Do I need to use thread sealant on the flare ends?
No, flare fittings rely on metal-to-metal contact for sealing. Only the 1/4" MPT branch should be treated with a compatible refrigeration-grade thread sealant.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.