Graco 15D671 Inlet Suction Tube

Graco 15D671 Inlet Suction Tube – Detailed Overview

Compatible Machines

• Graco Magnum XR7 and XR9, Series C & D — per Graco parts manual listing for suction tube.

Product Description

The Graco 15D671 Inlet Suction Tube (also referred to as “Tube, Suction, Barb”) is the OEM replacement part used to draw material into the pump from the fluid source. It’s specifically designed to mate with the inlet valve and provide a reliable path for fluid intake, maintaining priming under normal working conditions. 

Key Features & Specifications

Function & Importance

• Serves as the primary fluid draw path from the material container into the pump, enabling consistent priming.
• Barbed end helps secure hose connection and minimize the risk of leaks or disconnections.
• Ensures steady suction even under varied job‑site conditions, maintaining reliable performance of the sprayer.

Installation & Maintenance Tips

• Always relieve pump pressure and clean material before removing or installing the suction tube to avoid contamination or injury.
• Check the barbed end and fitting for signs of wear, cracking, or looseness during regular maintenance.
• Ensure that the tube is properly seated into the inlet valve housing and that any o-rings or seals are intact and in good condition.
• If the pump fails to prime, inspect the suction tube for cracks, blockages, or vacuum leaks.
• Replace with genuine 15D671 when worn or damaged — aftermarket alternatives may not maintain correct geometry or sealing.

Safety & Troubleshooting Notes

• A leaking or cracked suction tube can introduce air, preventing the pump from priming properly.
• During troubleshooting, if priming fails or fluid draw is poor, verify the suction tube’s immersion level and inspect that there is no air leak at the connection.
• Using a compromised or incorrect suction tube may lead to erratic spray performance, reduced efficiency, or damage to internal pump components.

Frequently Asked Questions