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The PARKER 179CA-4-4 is a 45-degree male elbow compression fitting machined from brass. It connects 1/4-inch OD tubing to a 1/4-18 NPTF male threaded port, creating a leak-resistant angled transition in fluid or pneumatic lines. The compression end grips the tube mechanically without soldering or flaring, while the MNPT end threads directly into a female-threaded port or body. Rated to 1400 psi maximum working pressure and a temperature range of -65 degrees F to 250 degrees F, this fitting is suited for hydraulic, pneumatic, fuel, and instrumentation line work performed by licensed plumbers, HVAC technicians, and fluid-power mechanics.
This fitting is used in residential and light commercial applications wherever a 45-degree directional change is needed between a compression tube run and a threaded male connection point. Typical scenarios include instrument tubing assemblies, refrigeration line accessories, hydraulic control circuits, and pneumatic distribution panels. The NPTF thread standard provides a pressure-tight mechanical seal at the threaded joint without relying solely on thread sealant.
Designed for use with 1/4-inch OD tubing and 1/4-18 NPTF female-threaded ports in compression fitting assemblies across hydraulic, pneumatic, fuel, and instrumentation systems.
Installation is performed by licensed plumbers, HVAC technicians, or fluid-power mechanics. Shut off and bleed system pressure completely before disassembling or installing any compression fitting. Ensure tubing is cut square and deburred before seating it into the compression end, and tighten the compression nut to the fitting body without over-torquing. Apply an appropriate thread sealant or PTFE tape to the NPTF male threads per the applicable system or code requirements.
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