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The NIBCO B145350 is a cast copper pressure tee fitting designed for copper tubing systems in plumbing, HVAC, and hydronic applications. At 1/4 inch in size, this tee features a C x C x F end connection arrangement — two sweat (solder) inlets and one female threaded outlet — allowing a branch takeoff from a main copper run to a threaded component. Cast copper construction delivers consistent wall thickness and reliable joint integrity under pressure service conditions. The fitting weighs 0.08 pounds and is manufactured to ASTM B584 and ISO standards, making it appropriate for potable water and mechanical system installations.
This fitting is suited for residential and light commercial plumbing and HVAC systems where a 1/4 inch copper branch connection is required. The C x C x F configuration is commonly used when transitioning from a sweat copper main line to a threaded valve, gauge, or sensor port. Licensed plumbers and HVAC technicians install this type of fitting during new construction, system repair, or component replacement in tight-space applications where 1/4 inch tubing is standard.
Designed as an OEM-style replacement and new-installation pressure fitting for 1/4 inch copper tubing systems requiring a tee with two sweat ends and one female threaded branch outlet.
Installation should be performed by a licensed plumber or qualified HVAC technician in accordance with applicable local plumbing codes and IPC guidelines. Depressurize and drain the system before cutting into any existing copper line. Clean tubing ends and fitting cups thoroughly and apply appropriate flux before soldering the sweat connections. The female threaded outlet should be wrapped with PTFE tape or pipe thread sealant before connecting any threaded component.
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