PARKER Compression Fitting Adapter: 3/8 in OD x 1/4 in Pipe Size, Compression x FNPT
The PARKER Compression Fitting Adapter (MPN 6-4 GBZ-B) is a single-ferrule brass compression fitting, type Compression x FNPT, in the CPI™ series. It connects 3/8 in OD tubing to 1/4 in Pipe Size. 3G Electric…
SKU 3G-OTH-598442
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Product Description
The PARKER Compression Fitting Adapter (MPN 6-4 GBZ-B) is a single-ferrule brass compression fitting, type Compression x FNPT, in the CPI™ series. It connects 3/8 in OD tubing to 1/4 in Pipe Size. 3G Electric interprets this demand and sources the genuine PARKER part, backed by specialist expertise across 14 industrial departments.
Frequently Asked Questions
What is the PARKER 6-4 GBZ-B compression fitting adapter used for?
The PARKER 6-4 GBZ-B is a single-ferrule brass compression fitting adapter used to connect 3/8 in OD tubing to 1/4 in pipe size (FNPT) in instrumentation and process control systems. It is part of the CPI™ series, designed for leak-free sealing in high-pressure fluid and gas applications.
What are the specifications of the PARKER 6-4 GBZ-B?
The PARKER 6-4 GBZ-B is a Compression x FNPT brass adapter with a 3/8 in OD tube size and 1/4 in pipe size. It is a single-ferrule compression fitting from the CPI™ series, manufactured by PARKER. The part number is 6-4 GBZ-B, and it is made of brass for corrosion resistance.
Where to buy the PARKER 6-4 GBZ-B worldwide?
3G Electric supplies the genuine PARKER 6-4 GBZ-B compression fitting adapter worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us to source this CPI™ series brass fitting for your instrumentation needs.
How to install a PARKER single-ferrule compression fitting?
To install a PARKER CPI™ single-ferrule compression fitting, slide the nut and ferrule onto the tubing, insert the tube into the fitting body until it bottoms, then tighten the nut by hand. Use a wrench to tighten an additional 1-1/4 turns for a leak-free seal. Always follow PARKER's recommended torque specifications.
Used in
Common applications for PARKERPARKER Products
3G Electric supplies PARKER single-ferrule brass compression fittings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.









