Graco 157705 Union 1/4 in x 3/8 in
$15.50
In Stock
Ensure reliable, leak-free connections in your airless spray system with the Graco 157705 Union 1/4 in x 3/8 in. Compact and durable, it adapts different hose sizes seamlessly.
- High-pressure rated up to 5000 psi
- Compact design for tight-space installation
- Carbon steel construction for long-lasting durability
- Compatible with Graco Ultra 395/495/595, ST Max II, LineLazer, and ProContractor series
- Supports solvent-based and waterborne coatings
Quantity
Genuine OEM Part
Fast Shipping (Order by 1 PM CST)
Easy Returns
Graco 157705 Union Fitting 1/4 in x 3/8 in Overview
The Graco 157705 Union is a high-pressure fitting designed to connect a 1/4-inch male NPT line to a 3/8-inch female NPSM port. Ideal for airless spray systems, it provides leak-free performance and smooth fluid flow for professional coating applications.
Compatible Machines
| Machine Model | Type / Series |
|---|---|
| Graco Ultra 395 | Airless Sprayer |
| Graco Ultra 495 | Airless Sprayer |
| Graco Ultra 595 | Airless Sprayer |
| Graco ST Max II | Airless Sprayer |
| Graco LineLazer | Contractor Sprayer |
| Graco ProContractor Series | Airless / Contractor Sprayer |
Key Features
- 1/4 in x 3/8 in union fitting for flexible hose connections
- High-pressure rated up to 5000 psi
- Carbon steel construction for durability
- Compact design for tight-space installation
- Leak-free performance for professional spraying applications
Installation & Maintenance
Ensure the union is properly threaded and tightened according to torque specifications. Use compatible thread sealants if required. Regularly inspect O-rings and connection points to maintain long-term reliability.
Frequently Asked Questions
Compatible with solvent-based and waterborne coatings, sealants, and other high-viscosity fluids. Always verify chemical compatibility with the union materials.
The fitting is rated for pressures up to 5000 psi, suitable for professional airless spray systems.
Yes, provided that the system’s thread sizes match 1/4-inch male NPT to 3/8-inch female NPSM. Always confirm compatibility before installation.
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