Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
PARKER Compression Fitting Union: 1/4 in OD x 1/4 in OD Fitting Size - Single-Ferrule Stainless Steel Fittings
PARKERSingle-Ferrule Stainless Steel Fittings

PARKER Compression Fitting Union: 1/4 in OD x 1/4 in OD Fitting Size

The PARKER Compression Fitting Union (MPN 4-4 WBZ-SS) is a single-ferrule stainless steel fitting with a 1/4 in OD x 1/4 in OD compression x compression configuration. Part of the CPI™ series, it is designed for use…

SKU 3G-OTH-474521

Brand
PARKER
Item
Compression Fitting Union: 1/4 in OD x 1/4 in OD Fitting Size
Category
Single-Ferrule Stainless Steel Fittings
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

PARKER
Manufacturer Part Number
4-4 WBZ-SS
Series
CPI(TM)
Type
Compression x Compression
Compatible Fitting Brands
CPI™
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

PARKER Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The PARKER Compression Fitting Union (MPN 4-4 WBZ-SS) is a single-ferrule stainless steel fitting with a 1/4 in OD x 1/4 in OD compression x compression configuration. Part of the CPI™ series, it is designed for use with CPI™ compatible fitting brands.

Frequently Asked Questions

What is the PARKER 4-4 WBZ-SS compression fitting union used for?

The PARKER 4-4 WBZ-SS is a single-ferrule stainless steel union used to join two 1/4 in OD tubes in instrumentation, process control, and hydraulic systems. Its compression x compression design provides a leak-tight seal in high-pressure or corrosive environments.

What are the specifications of the PARKER 4-4 WBZ-SS?

The PARKER 4-4 WBZ-SS is a CPI™ series compression fitting union with 1/4 in OD x 1/4 in OD compression x compression ends. It is made of stainless steel, uses a single-ferrule design, and is compatible with CPI™ brand fittings. The manufacturer part number is 4-4 WBZ-SS.

Where to buy the PARKER 4-4 WBZ-SS worldwide?

3G Electric supplies the PARKER 4-4 WBZ-SS compression fitting union to customers worldwide. As a global industrial sourcing partner, we handle logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this CPI™ series fitting.

How to install a PARKER single-ferrule compression fitting?

To install a PARKER single-ferrule fitting like the 4-4 WBZ-SS, cut the tube square, deburr, and slide the nut and ferrule onto the tube. Insert the tube fully into the fitting body, then tighten the nut to the manufacturer’s recommended torque. Do not overtighten to avoid damaging the ferrule.

Used in

Common applications for PARKER
Injection molding machine proportional directional control — Parker solenoid coils and proportional valve cartridges for mold-closing and hydraulic actuation circuits
Construction equipment hydraulic steering and boom control — Parker directional control valves with solenoid actuation for excavator and loader hydraulic systems
Industrial press forming systems — Parker pressure-relief and proportional directional valves for tonnage control and cycle sequencing
Material-handling conveyor systems — Parker proportional control valves with solenoid pilot stages for smooth load acceleration and deceleration
Tire-building machinery — Parker solenoid-actuated directional cartridges for synchronized multi-axis hydraulic positioning
Forestry and mobile equipment — Parker valve spools and solenoid assemblies rated for harsh-environment hydraulic circuits and mobile-duty pressure cycling

PARKER Products

3G Electric supplies PARKER single-ferrule stainless steel fittings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

More from PARKER

View all PARKER parts →
PARKER Compression Fitting Elbow: 5/8 in OD x 5/8 in OD Fitting Size, Compression x Compression (MPN 10-10 EBZ-SS). Key specifications — Series: CPI(TM); Compatible Fitting Brands: CPI™; Brand: PARKER.
PARKER
PARKER Compression Fitting Elbow: 5/8 in OD x 5/8 in OD Fitting Size, Compression x Compression (MPN 10-10 EBZ-SS). Key specifications — Series: CPI(TM); Compatible Fitting Brands: CPI™; Brand: PARKER.
PARKER Compression Fitting Adapter: 3/8 in OD x 1/4 in Pipe Fitting Size, Compression x FNPT (MPN 6-4 GBZ-SS). Key specifications — Series: CPI(TM); Compatible Fitting Brands: CPI™; Brand: PARKER.
PARKER
PARKER Compression Fitting Adapter: 3/8 in OD x 1/4 in Pipe Fitting Size, Compression x FNPT (MPN 6-4 GBZ-SS). Key specifications — Series: CPI(TM); Compatible Fitting Brands: CPI™; Brand: PARKER.
PARKER Compression Tee Fitting: 1/8 in OD x 1/8 in Pipe x 1/8 in OD Fitting Size, Stainless Steel (MPN 2-2-2 RBZ-SS). Key specifications — Compatible Fitting Brands: CPI™; Brand: PARKER.
PARKER
PARKER Compression Tee Fitting: 1/8 in OD x 1/8 in Pipe x 1/8 in OD Fitting Size, Stainless Steel (MPN 2-2-2 RBZ-SS). Key specifications — Compatible Fitting Brands: CPI™; Brand: PARKER.
PARKER Compression Tee Fitting: 3/8 in OD x 3/8 in OD x 1/4 in Pipe Fitting Size, Stainless Steel (MPN 6-6-4 OBZ-SS). Key specifications — Compatible Fitting Brands: CPI™; Brand: PARKER.
PARKER
PARKER Compression Tee Fitting: 3/8 in OD x 3/8 in OD x 1/4 in Pipe Fitting Size, Stainless Steel (MPN 6-6-4 OBZ-SS). Key specifications — Compatible Fitting Brands: CPI™; Brand: PARKER.
PARKER Compression Fitting Elbow: 1/4 in OD x 1/8 in Pipe Fitting Size, Compression x MNPT (MPN 4-2 CBZ-SS). Key specifications — Series: CPI(TM); Compatible Fitting Brands: CPI™; Brand: PARKER.
PARKER
PARKER Compression Fitting Elbow: 1/4 in OD x 1/8 in Pipe Fitting Size, Compression x MNPT (MPN 4-2 CBZ-SS). Key specifications — Series: CPI(TM); Compatible Fitting Brands: CPI™; Brand: PARKER.
PARKER Compression Fitting Plug: 3/8 in OD Fitting Size, Compression, Stainless Steel (MPN 6 FNZ-SS). Key specifications — Series: CPI(TM); Compatible Fitting Brands: Parker; Brand: PARKER.
PARKER
PARKER Compression Fitting Plug: 3/8 in OD Fitting Size, Compression, Stainless Steel (MPN 6 FNZ-SS). Key specifications — Series: CPI(TM); Compatible Fitting Brands: Parker; Brand: PARKER.
PARKER Compression Fitting Adapter: 1/4 in OD x 1/2 in Pipe Fitting Size, Compression x MNPT (MPN 4-8 FH4BZ-SS). Key specifications — Series: CPI(TM); Compatible Fitting Brands: CPI™; Brand: PARKER.
PARKER
PARKER Compression Fitting Adapter: 1/4 in OD x 1/2 in Pipe Fitting Size, Compression x MNPT (MPN 4-8 FH4BZ-SS). Key specifications — Series: CPI(TM); Compatible Fitting Brands: CPI™; Brand: PARKER.
PARKER Compression Fitting Nut: 1/4 in OD Fitting Size, Compression, Stainless Steel (MPN 4 BZ-SS). Key specifications — Series: CPI(TM); Compatible Fitting Brands: Swagelok; Brand: PARKER.
PARKER
PARKER Compression Fitting Nut: 1/4 in OD Fitting Size, Compression, Stainless Steel (MPN 4 BZ-SS). Key specifications — Series: CPI(TM); Compatible Fitting Brands: Swagelok; Brand: PARKER.