Graco 15D306 Texture Hopper Adapter Plug
The Graco 15D306 Texture Hopper Adapter Plug is a critical component designed to seal off the hopper’s air or material port when not in use. This ensures safe operation by maintaining proper pressure balance and preventing accidental over-pressurization or leaks.
Key Features
- OEM plug tailored for Graco texture hoppers
- Helps maintain an airtight seal for pressure safety
- Compact adapter design for easy installation and removal
- Durable construction withstands harsh job‑site conditions
Function & Purpose
The adapter plug secures the hopper’s air-relief or filling point, acting as a safeguard against over-pressurization. When the hopper is pressurized, it helps maintain consistent airflow while preventing material from escaping. During transport or storage, it ensures that no material leaks from the hopper’s opening.
Technical Specifications
| Part Number | 15D306 |
| Description | Adapter plug for texture hopper |
| Material | Robust metal / plastic suitable for pressure sealing |
| Weight | Approximately 0.44 lb |
Applications & Compatibility
This plug is used in Graco texture hopper systems, as shown in parts diagrams of Graco pump modules. It’s referenced in the Graco repair parts list, indicating its role in maintaining the pressure integrity of the hopper.
- Fits Graco texture hoppers used with spray systems that require a pressure‑sealing plug
- Used in maintenance or repair kits to replace worn or lost hopper plugs
Installation & Maintenance
- Always depressurize the hopper before removing or installing the plug
- Inspect the sealing face for wear or damage during routine maintenance
- Clean threading and sealing surfaces before reinstallation to maintain tight fit
- Replace if the plug becomes deformed, cracked, or loses sealing integrity
Frequently Asked Questions
The plug helps maintain pressure control in the hopper, preventing over-pressurization and ensuring a tight seal when the hopper is idle.
While other plugs might fit, using the OEM 15D306 ensures proper sealing, material compatibility, and safety per Graco’s design.
Replace the plug if you see leaks, hear hissing under pressure, or notice the plug is damaged or warped — all signs of compromised sealing.
