

The Graco 117509 Fitting Line Air 1/4NPT ensures secure connections and reliable performance for your airless sprayer system:
Upgrade your spraying system with the Graco 117509 Fitting Line Air 1/4NPT, designed for seamless integration and durability. This precision-engineered male Quick Disconnect fitting delivers consistent performance in demanding applications, ensuring optimal flow and pressure control. Ideal for professional-grade equipment, it enhances the reliability of your airless sprayer setup. Featuring robust stainless-steel construction and secure sealing, this essential component supports high-pressure filtration processes with minimal maintenance.
| Feature | Description |
|---|---|
| Connection | Precision 1/4NPT male connection for secure fit |
| Construction | Durable stainless-steel construction resists corrosion |
| Compatibility | Works with Graco AP Fusion Spray Guns and multiple airless sprayer systems |
| Pressure Handling | Supports system pressures above 3000 psi, burst pressure exceeding 6000 psi |
| Maintenance | Self-cleaning internal passages with modular o-ring replacement |
The fitting housing is made from 316 stainless steel for superior corrosion resistance. Internal o-rings use a PTFE-coated nitrile compound that handles temperatures from –10 °C to 80 °C. Tapered sealing surfaces and precision aluminum spacers enhance durability and reduce wear, while electropolished surfaces minimize particle adhesion.
Bench tests demonstrate efficient volumetric flow with a Cv coefficient of 0.65. Burst pressure ratings exceed 6000 psi. Install using a calibrated torque wrench (35–40 N·m), either vertical or inline. Ensure proper purge before connecting to avoid debris infiltration.