Parker 12 Fnz-ss Compression Tube Plug 3/4 Inch Ss

Product Description

The PARKER 12 FNZ-SS is a compression tube plug designed to seal and terminate 3/4-inch outside diameter tubing in pressurized fluid systems. Constructed from stainless steel, this plug handles a maximum working pressure of 5800 psi, making it suitable for demanding hydraulic, pneumatic, and instrumentation applications. The compression-style end connection creates a secure, leak-resistant seal without welding or threading. Plumbers, pipefitters, and instrumentation technicians install this fitting when a tube run must be capped off cleanly in a high-pressure environment.

This plug is used in residential and commercial plumbing, as well as industrial fluid and gas distribution systems where stainless steel corrosion resistance is required. Typical installation scenarios include capping unused ports on manifolds, sealing test points after pressure checks, and terminating branch lines during system modifications. The compression fitting style is common in HVAC refrigerant lines, hydraulic test rigs, and process instrumentation tubing assemblies.

Key Features

• Compression end connection seals 3/4-inch OD tubing without welding or brazing
• Stainless steel construction resists corrosion in wet, chemical, and high-temperature environments
• Rated to 5800 psi maximum working pressure for high-pressure service
• Terminates tube runs cleanly with a single fitting, no cap nut or additional hardware required
• Compact plug design minimizes dead-leg volume at capped ports

Compatibility

Designed as an OEM-style compression tube plug for systems using 3/4-inch outside diameter tubing with standard compression-style fittings.

Installation Notes

This fitting is installed by licensed plumbers, pipefitters, or instrumentation technicians familiar with compression-style tube connections. Depressurize and isolate the tubing system completely before removing any existing fittings or installing this plug. Use appropriate tube preparation tools to ensure the tube end is cut square and deburred before insertion. Follow applicable piping codes such as ASME B31.3 or local mechanical codes for pressure ratings and installation requirements.