Parker 68HD-2-2 Compression Tube Connector 1/8 Inch Mnpt

Product Description

The PARKER 68HD-2-2 is a brass compression tube connector designed for high-pressure fluid and gas line applications in trade and industrial settings. It provides a leak-resistant compression-to-male NPT (MNPT) connection at a 1/8 inch thread size, allowing technicians to join tubing to threaded port fittings without welding or flaring. Built from brass, this connector handles a maximum working pressure of 4300 psi and operates across a temperature range of -65 degrees F to 250 degrees F, making it suitable for demanding hydraulic, pneumatic, and instrumentation systems. Licensed plumbers, HVAC technicians, and industrial pipefitters are the primary installers of this fitting.

This connector is used in residential and commercial applications wherever compression tubing meets a male NPT threaded port. Typical install scenarios include instrument tubing runs, control line hookups, refrigeration sensing lines, and hydraulic manifold connections. The compression end accepts standard tubing and creates a positive seal under pressure, while the MNPT end threads directly into a female NPT port on a valve, manifold, or equipment body. It is sold individually but carries a minimum order quantity of 5 units, making it practical for service van stock or small-job procurement.

Key Features

• Brass construction resists corrosion in fluid and gas service
• Compression x MNPT end connections eliminate the need for flaring or welding
• Rated to 4300 psi maximum working pressure for demanding system use
• Operates from -65 degrees F to 250 degrees F across a wide service range
• 1/8 inch thread size suits common small-bore instrumentation and control lines
• Compact, lightweight design at 0.04 pounds for easy field handling

Compatibility

Designed as an OEM-style replacement or service fitting for compression tube systems using 1/8 inch male NPT threaded ports in HVAC, plumbing, hydraulic, and instrumentation applications.

Installation Notes

Installation is typically performed by a licensed plumber, pipefitter, or HVAC technician. Depressurize and isolate the line completely before disassembling any fitting in the circuit. Apply thread sealant or PTFE tape to the MNPT threads per applicable codes such as the IPC or IFGC, and hand-tighten before final wrench tightening. Do not over-tighten the compression nut, as excess force can deform the ferrule and cause leaks rather than prevent them.