JB machines all of the brass fittings at the factory in aurora, Illinois using the highest level of brass consisting of 65% copper and 35% zinc. This gives our brass fittings and access valves higher tensile strength while resisting corrosion. Many import fittings use lower quality brass with lower copper content, resulting in higher failure rates. Our brass fittings may be used with copper, brass, aluminum, steel and plastic tube provided an acceptable flare could be generated with the material. Vacuum pressures of 5000 psi can be handled depending on the size, material and conditions. Using a 4:1 safety factor, the following general rule is used: 3000 psi to 1/4 in, 2000 psi to 1/2 in and 1500 psi to 1 in. Long nuts are recommended when vibration is a factor. Tubing should be double flared in extreme applications to minimize flare thinning on over-tightening.

JB Industries Adapter, Adapter Fitting, 5/8 in Connection Size 1, Connection Type 1: Flare Swivel, 5/8 in Connection Size 2, Connection Type 2: Solder, Flared Swivel|Solder Connection, Brass, Material Construction: Brass

• Double deep solder cups
• For all CFC, HCFC and HFC refrigerants

• Catalog https://assets.unilogcorp.com/267/ITEM/DOC/JB_Industries_A32703_Catalog.pdf