Parker 61NTA-3 Compression Tube Nut Brass 150 Psi

Product Description

The PARKER 61NTA-3 is a brass compression tube nut designed for use in compression-style tube fittings. It provides a secure mechanical connection by compressing a ferrule against a tube end, creating a leak-resistant seal without soldering or brazing. Rated to 150 psi maximum working pressure, this nut handles temperatures from -40 degrees F to 200 degrees F. With an inside diameter of 1.94 inches, it is sized for larger-diameter tubing applications. Plumbers, HVAC technicians, and refrigeration mechanics are the primary installers of this type of fitting hardware.

This compression tube nut is suited for fluid and gas distribution systems in both residential and light commercial settings. It is used wherever a compression fitting assembly is required, including plumbing supply lines, pneumatic systems, and instrument tubing connections. The brass construction makes it appropriate for water, air, and compatible fluid service within its rated pressure and temperature range.

Key Features

• Brass construction for corrosion resistance in water and air service
• Compression end connection — no soldering or brazing required
• Rated to 150 psi maximum working pressure
• Operating temperature range: -40 degrees F to 200 degrees F
• Inside diameter of 1.94 inches for larger-diameter tube fitment

Compatibility

Designed as an OEM-style compression tube nut for use with Parker and standard compression fitting assemblies in plumbing, HVAC, and pneumatic tubing systems.

Installation Notes

Installation is performed by licensed plumbers or qualified HVAC and mechanical technicians. Shut off and depressurize the line before disassembly or fitting replacement. Hand-tighten the nut onto the fitting body first, then advance with a wrench — avoid over-tightening, which can crack the ferrule or deform the tube. Follow applicable IPC or IFGC guidelines for the system type being serviced.