Piston Stud Assembly Details & Compatibility
Compatible Machines
This Graco 223565 Piston Stud Assembly is designed for selected industrial and heavy-duty Graco pump systems. Below is the verified compatibility list:
- GH433 Hydraulic Sprayer
- President 30:1 Pneumatic Pump Units
- EH433 Series Sprayers
- Selected 14:1 & 15:1 Monark Pumps (specific configurations only)
Product Overview
The 223565 Piston Stud Assembly is a stainless-steel internal pump component designed to maintain a strong seal, stable fluid movement, and long service life inside the sprayer’s displacement pump section. Its hardened seating surface provides consistent performance under demanding, high-pressure operating conditions.
Key Features
- Durable stainless-steel construction for extended service life
- Precision-machined seating for reliable pump cycling
- Supports stable operation in high-pressure fluid systems
- Engineered for industrial paint sprayers and pneumatic pump assemblies
Technical Information
| Part Number | 223565 |
| Material | Stainless Steel with Hardened Seat |
| Function | Piston stud / piston valve component for fluid section |
| Application Type | Industrial Sprayers & Pneumatic Pump Systems |
Frequently Asked Questions
It acts as the primary piston valve component inside the fluid pump section, enabling proper intake and discharge of material during each pump cycle.
No. It is specifically matched to the GH433 model. Other GH-series units use different piston and valve assemblies, so compatibility must be confirmed by model number.
While many technicians can install it themselves, precise seating and torque are important. Professional installation is recommended for optimal pump performance.
