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The PARKER MP11043 is a brass compression tube nut used to secure tubing in compression-style fittings across a wide range of fluid and gas plumbing systems. The nut threads onto the fitting body and compresses a ferrule against the tubing to create a leak-resistant mechanical seal without soldering or flaring. Brass construction provides good corrosion resistance and reliable performance in typical plumbing, HVAC, and refrigeration applications. This nut is a standard component in compression fitting assemblies and is installed by licensed plumbers, HVAC technicians, and refrigeration mechanics.
Compression tube nuts are commonly used in residential and light commercial systems where tubing connections require a removable, reusable fitting. Typical applications include water supply lines, refrigerant line accessories, pneumatic controls, and instrumentation tubing. This part is sold in a package quantity of 10, making it suitable for service calls or small installations requiring multiple connections.
Designed as an OEM-style replacement compression tube nut for use in standard compression fitting assemblies in plumbing, HVAC, and fluid handling applications.
Installation is performed by a licensed plumber or HVAC technician. Shut off the water or fluid supply and depressurize the line before disassembling any fitting. Hand-tighten the nut onto the fitting body before applying a final snug turn with a wrench. Avoid overtightening, which can deform the ferrule or damage the tubing.
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