Graco 15A841 Piston Valve
The Graco 15A841 Piston Valve controls fluid flow in high-pressure systems, providing precise sealing and reliable operation in industrial applications.
- Precision-engineered piston for accurate fluid control
- Durable construction for high-pressure use
- Ensures leak-free operation and smooth cycling
- Compatible with OEM valve repair kits
Graco 15A841 Piston Valve – Product Overview
Compatible Systems
| System / Model Type | Description |
|---|---|
| Graco Plural‑Component Proportioning Pumps | High‑pressure two‑component systems requiring a piston valve to manage fluid metering and pressurization |
| Graco Metering & Valve Blocks | Valve blocks that integrate a piston valve for precision fluid control and sealing integrity |
| Graco Repair & Service Modules | Replacement assemblies and rebuild kits where the piston valve is a critical wear part |
Product Description
The Graco 15A841 Piston Valve is a precision‑engineered internal valve mechanism designed to regulate high‑pressure fluid flow in demanding industrial applications. It serves as the core working element in fluid control assemblies, enabling accurate opening, closing and sealing within valve systems.
Built from high‑strength materials and finished to exacting tolerances, the 15A841 ensures consistent performance in cyclical operation, withstands elevated pressures, and maintains fluid integrity across thousands of cycles. Whether used in a pump system, service module or metering assembly, it delivers reliable, repeatable fluid control under rigorous conditions.
Key Features
- Precision‑machined piston and chamber assembly for tight clearances and minimal leakage
- Durable construction engineered for high‑pressure systems and frequent cycling
- Optimized sealing surfaces to ensure fluid containment under high loads and variable conditions
- Direct OEM compatibility to streamline repair and replacement in Graco systems
- Supports long service life and easy rebuildability through modular design
Technical Specifications
| Part Number | 15A841 |
|---|---|
| Component Type | Piston Valve Assembly |
| Use Case | Controls fluid admission, sealing and release in high‑pressure valve systems |
| Typical Pressure Rating* | Up to ~7,250 psi (50 MPa) in comparable assemblies |
| Function | Acts as moving element inside a valve body to regulate, isolate and release fluids |
| Serviceability | Designed for inclusion in valve repair kits and rebuild procedures |
Installation & Maintenance Tips
- Always depressurize the system and relieve fluid pressure before removing the valve assembly.
- Inspect piston chamber, seals, O‑rings and surrounding housing for any signs of wear, corrosion, scoring or damage before installation.
- Apply the manufacturer’s recommended lubricant to the piston and seals where applicable to ensure smooth cycling and proper function.
- Follow specified torque settings for mounting hardware to maintain sealing integrity without damaging components.
- During rebuilds, replace all internal seals, O‑rings and packings even if not visibly worn, to restore full system reliability.
- After installation, cycle the system at low pressure to verify smooth operation and absence of leaks prior to full‑scale use.
Frequently Asked Questions
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