Graco 15D325 By-Pass Tube

Graco 15D325 By‑Pass Tube

The Graco 15D325 By‑Pass Tube is an essential OEM component for high‑pressure fluid systems, enabling controlled bypass of excess fluid back into the reservoir. It helps maintain stable pressure and protects the pump by routing overflow or recirculated material.

Key Features

• By‑pass design to safely redirect excess fluid under pressure
• Durable tubing built to handle repeated flow cycles
• OEM-specified for Graco systems — guarantees compatibility
• Helps maintain consistent pump pressure and reduces stress on internal components

Technical Specifications

Function & Role in the System

The by‑pass tube helps regulate internal fluid flow by allowing surplus fluid to return to the reservoir, preventing pressure spikes and reducing pump wear. By offering a bypass path, it supports smoother operation and avoids over‑pressurisation in dynamic or heavy‑use spray systems.

Applications & Compatibility

The 15D325 is used in Graco fluid-handling systems and sprayers where a by-pass path is required, such as in certain airless or texture pump modules. It is listed in OEM parts catalogs as a by-pass line component.

• Commonly used in Graco pump assemblies that include pressure control or return circuits
• Part of maintenance kits for systems requiring fluid recirculation to the supply container

Installation & Maintenance

• Ensure proper routing: install the tube so that it smoothly directs returning fluid back to the container without sharp bends.
• Inspect the tube regularly for cracks, leaks or fatigue, especially in high‑cycle or high-pressure operations.
• Secure all clamps and fittings to prevent vibration‑related loosening.
• Replace the tube if signs of wear or bulging appear — a compromised bypass line can lead to unstable pressure or fluid loss.

Frequently Asked Questions