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The PARKER 59HD-6 is a brass compression tube plug designed to seal the end of a compression-style tubing line. It terminates an open compression fitting port, preventing flow or pressure loss at that connection point. Rated to 1500 psi maximum working pressure, this plug is built for reliable service in hydraulic, pneumatic, and fluid-handling systems. At 0.04 pounds, it is a compact, lightweight component. Installation requires no special tools beyond standard hand-tightening practices appropriate to compression fittings. It is typically installed by licensed plumbers, HVAC technicians, or fluid systems technicians during system assembly, modification, or maintenance.
The PARKER 59HD-6 is suited for use in residential and commercial plumbing, HVAC refrigerant line termination, and industrial fluid control applications where a compression fitting end must be capped off. It works wherever a compression-style tube plug is needed to block an unused port or isolate a section of tubing. The brass construction provides corrosion resistance and reliable sealing performance across a broad range of compatible media and operating conditions.
Designed as an OEM-style compression tube plug compatible with standard compression-style tubing systems requiring a capped or terminated end connection.
A licensed plumber or qualified technician should install this fitting. Depressurize and isolate the tubing line fully before removing any existing fittings or installing this plug. Hand-tighten the compression nut to seat the ferrule, then snug with a wrench — do not overtighten, as this can deform the ferrule and compromise the seal. Verify the connection is leak-free before returning the system to service.
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