Parker VS68NTA-3-4 Brass Compression Tube Connector 1/4 in

Product Description

The PARKER VS68NTA-3-4 is a brass compression tube connector designed to join tubing to a male NPT threaded port in fluid and pneumatic plumbing systems. The fitting features a compression end on one side and a 1/4-inch MNPT end on the other, creating a reliable mechanical seal without soldering or flaring. Built from brass, it handles working pressures up to 150 psi and a temperature range of -40 degrees F to 200 degrees F. Plumbers, HVAC technicians, and refrigeration mechanics install this fitting where a tube-to-threaded-port transition is required in low-to-medium pressure service lines.

This connector is suited for residential and light commercial applications involving copper or compatible soft tubing routed to threaded fittings on valves, manifolds, gauges, or equipment ports. The NPTF thread standard provides a pressure-tight connection at the male NPT interface. Typical install scenarios include fuel gas accessories, water supply lines, instrument tubing, and HVAC refrigerant accessories where compression fittings are code-acceptable. The compact form factor allows installation in tight spaces where soldered joints are impractical.

Key Features

• Brass construction for corrosion resistance in wet and fluid service environments
• Compression x MNPT end connections allow tube-to-threaded-port transitions without soldering
• 1/4-inch NPTF thread standard for pressure-tight male NPT engagement
• Rated to 150 psi maximum working pressure
• Wide service temperature range: -40 degrees F to 200 degrees F
• Inside diameter of 0.087 inches accommodates compatible small-bore tubing

Compatibility

Designed as an OEM-style compression connector for use with compatible soft tubing and 1/4-inch MNPT threaded ports in fluid and pneumatic plumbing applications.

Installation Notes

Installation is typically performed by a licensed plumber or HVAC technician. Shut off system pressure and depressurize the line before disassembly or installation. Hand-tighten the compression nut onto the tube, then snug with a wrench — do not overtighten, as brass compression fittings can be damaged by excessive torque. Verify thread sealant or PTFE tape is applied to the MNPT threads per local code requirements before making the threaded connection.