Parker 68HD-5-4 Brass Compression Connector 1/4 Inch

Product Description

The PARKER 68HD-5-4 is a brass compression tube connector designed for joining tubing to a male NPT threaded port. It features a compression inlet on one end and a 1/4-inch male NPT (MNPT) threaded outlet on the other, making it a reliable choice for converting or transitioning between compression and threaded connections. Rated to 1800 psi maximum working pressure, this fitting is well suited for hydraulic, pneumatic, refrigeration, and fluid-transfer lines where a leak-free mechanical connection is required. Licensed plumbers, HVAC technicians, and fluid-systems mechanics typically install this type of fitting in both residential and light commercial applications.

This connector is commonly used in HVAC refrigerant lines, compressed air systems, hydraulic circuits, and general plumbing where a compression-to-threaded transition is needed. Its brass construction provides corrosion resistance and durability in wet or moisture-prone environments. The MNPT end threads directly into a female NPT port on valves, manifolds, gauges, or equipment housings, while the compression end secures tubing without soldering or special tools beyond standard wrenches.

Key Features

• Brass construction for corrosion resistance and long service life in fluid and gas systems
• Compression x MNPT end connections for tool-free tube termination on one end and threaded engagement on the other
• 1/4-inch male NPT thread for direct connection to standard female NPT ports
• 1800 psi maximum working pressure rating suitable for high-pressure fluid and pneumatic lines
• Compact single-piece connector with no additional adapters required for compression-to-threaded transitions

Compatibility

Designed as an OEM-style replacement or upgrade fitting for systems requiring a compression-to-male-NPT connection at 1/4-inch thread size, including HVAC, plumbing, hydraulic, and pneumatic assemblies.

Installation Notes

Installation is performed by qualified plumbers, HVAC technicians, or hydraulic system mechanics. Shut off and depressurize the system completely before removing any existing fittings or installing this connector. Hand-tighten the MNPT end into the receiving port, then use a wrench for final tightening — do not over-torque brass threads. Apply thread sealant or PTFE tape to the male NPT threads per applicable IPC or system-manufacturer guidelines, and inspect for leaks after restoring system pressure.