Parker 61PN-4 Compression Tube Nut Brass 1/4 in 150 Psi

Product Description

The PARKER 61PN-4 is a brass compression tube nut designed for use in compression-style tube fittings across plumbing, HVAC, and fluid-handling systems. It threads onto a compression fitting body to secure tubing with a 1/4 inch outside diameter, creating a leak-resistant mechanical seal without soldering or brazing. Rated to 150 psi maximum working pressure and suitable for service between 0 and 150 degrees F, this nut handles a broad range of liquid and gas applications. At 0.38 inches overall length, it is a compact, purpose-built component that installs quickly with standard hand tools.

This compression nut is used in residential and light commercial installations where tubing connections must be made to valves, regulators, gauges, or other compression-end components. Typical applications include refrigerant line accessories, instrument tubing, pneumatic controls, and potable water lines where brass construction and compression-style end connections are specified. It is sold individually but carries a minimum order quantity of 5 units, making it practical for stocking in a service van or shop inventory.

Key Features

• Brass construction provides corrosion resistance and reliable sealing in fluid and gas service
• Compression end connection eliminates the need for soldering or brazing during installation
• Rated to 150 psi maximum working pressure for a wide range of trade applications
• Compatible with 1/4 inch OD tubing for a precise, secure fit
• Compact 0.38 inch overall length suits tight installation spaces
• Operating temperature range from 0 to 150 degrees F covers most residential and commercial service conditions

Compatibility

Designed as an OEM-style replacement or service component for compression-style tube fitting assemblies using 1/4 inch outside diameter tubing.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or refrigeration mechanics. Shut off and depressurize the line before disassembling or replacing any compression fitting component. Hand-tighten the nut onto the fitting body first, then snug with a wrench — avoid overtightening, which can crack the ferrule or deform the tubing. Verify the connection is leak-free under system pressure before returning the system to service.