Cylinder Assembly Fastening Component for Graco Airless Pump Systems
Compatible Machines
- Graco Ultra Max II Series (390, 395, 490, 495, 595 Airless Sprayers)
- Graco Mark Series Airless Sprayers (Mark IV, Mark V, Mark X)
- Graco GMax Gas Airless Sprayers (3400, II Series Units)
- Graco Industrial Airless Pump Systems (King, Xtreme, Hydra models)
What is Graco 178079 Nut, Cylinder?
The Graco 178079 Nut, Cylinder is a precision fastening component used within Graco airless sprayer pump assemblies to secure and properly align the cylinder section of the pump. It plays a critical structural role in maintaining correct compression and stability during high-pressure fluid delivery.
By ensuring tight and accurate cylinder retention, it helps maintain consistent pump performance, prevents fluid leakage, and supports long-term durability of the piston and packing system.
Key Functions & Benefits
- Secures cylinder assembly within pump housing
- Maintains correct alignment under high-pressure operation
- Helps prevent fluid leakage and pressure loss
- Supports stable piston movement and pump efficiency
- Enhances overall durability of airless sprayer system
Product Role in Pump System
Installed as part of the upper pump assembly, the Graco 178079 Nut, Cylinder ensures the cylinder remains firmly seated during reciprocating motion. This stability is essential for maintaining sealing integrity and consistent spray output in professional coating applications.
Frequently Asked Questions
It secures the cylinder in place inside the pump housing, ensuring proper alignment and stable high-pressure operation.
Yes, improper installation or wear can lead to misalignment, pressure loss, and inconsistent spray patterns.
No, it is designed for specific Graco airless sprayer pump assemblies. Always confirm model and pump compatibility before replacement.
A loose cylinder nut can cause pressure instability, leakage, and potential damage to internal pump components during operation.
