Parker 68HD-3-2 Compression Tube Connector 3/16 Od Brass

Product Description

The PARKER 68HD-3-2 is a brass compression tube connector designed to join 3/16-inch outside diameter tubing to a male NPT threaded port. It transitions between a compression-style tube end and an MNPT fitting, creating a secure, leak-resistant connection in fluid and pneumatic lines. With a maximum working pressure of 2850 psi and an operating temperature range of -65 degrees F to 250 degrees F, this connector is built for demanding service conditions. The all-brass construction resists corrosion and holds up in both liquid and low-pressure gas applications. Plumbers, HVAC technicians, and fluid power mechanics install this type of fitting during system assembly or repair work.

This compression connector is suited for residential and light commercial installations where 3/16-inch OD tubing meets a threaded port on a valve, manifold, instrument, or equipment body. Common applications include refrigeration lines, instrument tubing, hydraulic control circuits, and fuel or pneumatic systems that require a reliable tube-to-pipe transition. The Compression x MNPT end configuration makes it compatible with standard NPT-threaded ports following MPT thread standards.

Key Features

• Brass construction for corrosion resistance in fluid and gas service
• Compression x MNPT end connections for tube-to-pipe transitions
• 3/16-inch tube outside diameter compatibility
• Rated to 2850 psi maximum working pressure
• Operating range of -65 degrees F to 250 degrees F
• Compact overall length of 1.14 inches for tight installation spaces

Compatibility

Designed as an OEM-style replacement or service fitting for systems using 3/16-inch OD compression tubing with standard male NPT threaded ports following MPT thread standards.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or fluid power mechanics. Depressurize and isolate the system completely before removing or installing any compression fitting. Hand-tighten the compression nut onto the fitting body, then advance with a wrench per standard compression fitting practice — avoid overtightening, which can deform the ferrule and compromise the seal. Verify thread compatibility with the receiving port before installation; NPT and BSP threads are not interchangeable.