Please wait while we process your order...

Free Shipping on Qualifying Orders Fast Shipping — Most Orders Ship Same Business DayOrder by 1 PM CST for fastest dispatchCall +1 713-931-4102

Graco 117728 Compression Union 3/8 Fitting

$10.70
Available to Order
Part #: 117728

The Graco 117728 Compression Union 3/8 delivers a strong, leak-free connection for high-pressure spray systems, ensuring durability and consistent performance in demanding environments.

  • Material: 316 Stainless Steel
  • Pressure Rating: Up to 6000 PSI
  • Connection Type: 3/8" Compression Union
  • Fits: Graco Ultra Max II, GMAX, RTX, LineLazer & DutyMax models
  • Resists: Corrosion, vibration, and fluid leaks
Quantity
Buy Now
Genuine OEM Part Fast Shipping (Order by 1 PM CST) Easy Returns

Graco 117728 Compression Union 3/8 – Reliable Connection for High-Pressure Systems

Compatible Machines

  • Graco Ultra Max II Series
  • Graco GMAX Series
  • Graco RTX Texture Sprayers
  • Graco LineLazer Series
  • Graco HydraMax and DutyMax Models

Product Description

The Graco 117728 Compression Union 3/8 provides leak-free, high-pressure connections for industrial fluid systems. Designed from corrosion-resistant stainless steel, this fitting ensures long-lasting durability and maintains system integrity in demanding airless spraying environments. Its compact, precision-machined design allows quick installation and secure sealing under pressure.

Key Features

  • Corrosion-resistant 316 stainless steel construction for longevity.
  • Rated up to 6000 PSI for high-pressure spray applications.
  • Dual-ferrule design ensures consistent sealing and vibration resistance.
  • Compact 3/8" size for tight installation spaces.
  • Easy-to-install with standard wrench hex flats.

Technical Specifications

Specification Details
Material 316 Stainless Steel
Connection Type 3/8" Compression Union
Pressure Rating Up to 6000 PSI
Operating Temperature -40°F to 180°F
Weight 0.08 lbs
Applications Airless Paint Sprayers, Fluid Pumps, Hydraulic Lines

Maintenance Tips

  • Inspect regularly for wear or corrosion on ferrules and sealing surfaces.
  • Torque to 25–30 ft-lbs during installation to ensure proper compression.
  • Clean threads and seal faces before reassembly to prevent leaks.
  • Replace worn ferrules promptly to maintain pressure integrity.

Frequently Asked Questions

The Graco 117728 Compression Union connects two fluid lines securely, maintaining a high-pressure, leak-free seal in airless spray systems and other industrial applications.

It fits a wide range of Graco sprayers including the Ultra Max II, GMAX, RTX, LineLazer, and DutyMax models.

Align the tubing ends squarely, insert them into the fitting, and tighten using a calibrated wrench to 25–30 ft-lbs. Avoid over-tightening to preserve ferrule integrity.

No reviews yet. Be the first to review this product!

Related Products

Graco 117739 Wiper Rod #1 Seller
Graco
Graco 117739 Wiper Rod
Part #: 117739
(1)
$5.25
Buy Now
Graco 117745 Strain Relief Bushing Genuine OEM
Graco
Graco 117745 Strain Relief Bushing
Part #: 117745
$7.80
Buy Now
Graco 117759 Valve Thermal Relief 1/4 Genuine OEM
Graco
Graco 117759 Valve Thermal Relief 1/4
Part #: 117759
$24.00
Buy Now

Recently Viewed

Graco 102216 Nut, Lock Genuine OEM
Graco
Graco 102216 Nut, Lock
Part #: 102216
$89.25
Buy Now
Graco 166808 Adjusting Nut Genuine OEM
Graco
Graco 166808 Adjusting Nut
Part #: 166808
$111.00
Buy Now
Graco 16C815 Project Painter Plus Base −6%
Graco
Graco 16C815 Project Painter Plus Base
Part #: 16C815
$28.44 $30.10 Save $1.66
Buy Now
Graco 128915 Laser Card Operator Genuine OEM
Graco
Graco 128915 Laser Card Operator
Part #: 128915
$5.35
Buy Now
Your Cart
No items in cart.
Add more items
Total 0
Checkout Modify Cart