Graco 158483 Plunger Valve Seat Information
Compatible Machines
- Graco Automatic Pressure Control Systems
- Graco Industrial Fluid Handling Equipment
- Graco Paint Sprayers using Plunger Valve Assembly 158482 or 158484
- Graco Hydraulic and Pneumatic Valve Assemblies using Seat 158483
Product Overview
The Graco 158483 Plunger Valve Seat is a precision-engineered component built for Graco plunger valve assemblies. It provides the essential sealing surface that ensures consistent pressure regulation and leak-free performance within high-pressure systems.
Designed from high-strength materials, it offers long-term durability against wear, corrosion, and chemical exposure. This seat plays a key role in maintaining stable fluid control and performance across Graco’s industrial applications.
Key Specifications
| Part Number | 158483 |
| Part Name | Seat, Plunger Valve |
| Material | High-Durability Alloy or Composite |
| Approximate Dimensions | 1.2 in × 1.2 in × 1.2 in |
| Function | Provides a sealing surface for the plunger valve, ensuring reliable pressure control and fluid regulation. |
| Usage Category | Industrial Coating, Fluid Handling, and Paint Spraying Systems |
Usage Recommendations
- Verify the part number in your Graco equipment’s service manual before ordering.
- Replace when signs of wear, pitting, or leakage appear around the plunger assembly.
- Use with matching Graco valve stem and plunger components for best sealing results.
- Follow manufacturer torque specifications during installation to avoid seat damage.
Frequently Asked Questions
The seat serves as the sealing surface inside the plunger valve. It ensures tight closure, maintaining pressure and preventing leaks in Graco’s fluid systems.
The part fits Graco automatic pressure control systems, paint sprayers, and industrial valve assemblies using plunger assemblies 158482 and 158484. Always confirm with your model’s official parts manual.
Inspect the seat regularly during maintenance. Replace it every 500–1000 operating hours or sooner if you observe wear, corrosion, or reduced pressure retention.
