Parker 4-12 Fbz-ss Compression Connector 3/4 in Ss

Product Description

The PARKER 4-12 FBZ-SS is a stainless steel compression tube connector designed to join tubing to male NPT threaded pipe ends in high-pressure fluid and gas systems. The fitting uses a compression end on one side and a male NPT thread on the other, creating a leak-resistant mechanical joint without the need for soldering or flaring. Rated to a maximum working pressure of 10,300 psi, this connector is suited for demanding hydraulic, instrumentation, and industrial plumbing applications. It is typically installed by licensed plumbers, pipefitters, or instrumentation technicians working on high-pressure lines.

This compression-to-MNPT connector is used in residential and commercial applications where tubing must transition to threaded pipe connections. Common install scenarios include instrumentation lines, hydraulic control systems, and high-pressure fluid distribution plumbing. The stainless steel construction makes it appropriate for corrosive environments or systems requiring material compatibility with aggressive media. The 3/4 inch thread size suits a wide range of standard pipe configurations.

Key Features

• Stainless steel body for corrosion resistance in demanding environments
• Compression x MNPT end connections for tubing-to-threaded-pipe transitions
• Maximum working pressure rated to 10,300 psi
• 3/4 inch male NPT thread compliant with MPT thread standard
• No soldering or flaring required for assembly

Compatibility

Designed as a standard compression-to-MNPT fitting for use in high-pressure tubing systems requiring a 3/4 inch male NPT threaded connection.

Installation Notes

Installation should be performed by a qualified plumber or pipefitter in accordance with applicable IPC or system-specific pressure codes. Shut off and fully depressurize the line before disassembly or fitting installation. Hand-tighten the compression nut first, then snug with a wrench — do not overtighten, as excessive force can damage the compression ferrule. Verify thread engagement and inspect for leaks after pressurizing the system.