Parker 4-4 Gbz-b 1/4 Inch Compression X Fnpt Brass Connector

Product Description

The PARKER 4-4 GBZ-B is a straight brass compression tube connector designed to join 1/4 inch compression tubing to a female NPT threaded port. Machined from brass to ASTM-B-453 and ASTM-B16 standards, it provides a rated working pressure of 3500 psi and a total assembled length of 1.42 inches. This fitting is used in instrumentation, HVAC, refrigeration, and fluid control applications where a leak-tight mechanical connection between tubing and a female threaded fitting is required. Licensed plumbers, HVAC technicians, and instrumentation technicians are the typical installers.

This connector suits residential and light commercial installations where copper or compatible soft tubing meets an FNPT port on valves, gauges, manifolds, or equipment panels. Its straight configuration makes it well suited for in-line runs with no directional change needed. The 3500 psi maximum working pressure makes it appropriate for moderate to high-pressure fluid and gas systems within its rated temperature range. Verify tubing material compatibility before installation.

Key Features

• Brass construction per ASTM-B-453 and ASTM-B16 for corrosion resistance in fluid and gas service
• 3500 psi maximum working pressure for demanding system requirements
• 1/4 inch compression inlet x FNPT outlet straight configuration
• Overall length of 1.42 inches for compact inline installations
• Cross-referenced to Swagelok part number B-400-7-4

Compatibility

Designed as an OEM-style compression-to-FNPT straight fitting for 1/4 inch tubing systems requiring a female NPT threaded connection point. Cross-references to Swagelok part number B-400-7-4.

Installation Notes

Installation should be performed by a licensed plumber, HVAC technician, or qualified instrumentation technician. Shut off and depressurize the system completely before disassembling any fittings or tubing. Do not overtighten compression fittings; hand-snug plus the manufacturer-recommended turns is the standard practice for compression joints. Confirm that tubing is cut square, deburred, and fully seated before tightening the compression nut.