Graco 15D740 Rupture Disc Plug

Graco 15D740 Rupture Disc Plug – Detailed Overview

Compatible Machines

• Graco T‑Max 405 Texture Sprayer (Models 248195, 248269) — part number 15D740 is listed in the parts breakdown for this machine. 

Product Description

The Graco 15D740 Rupture Disc Plug is a critical safety component designed to protect high‑pressure liquid handling systems by providing a pre‑defined weak point or relief path in the event of overpressure. When system pressure exceeds safe limits, the disc will rupture or give way, safeguarding the equipment and operator from catastrophic failure.

Key Features & Specifications

Importance & Safety Notes

• Prevents uncontrolled pressure build‑up in fluid systems, which can lead to hose bursts, equipment damage or operator injury.
• By providing a predetermined failure point, the rupture disc plug helps maintain system integrity and safety compliance in high‑pressure spray applications.
• Inspection of the plug should be part of routine maintenance — if the disc has ruptured, show signs of stress, corrosion or damage, replacement is mandatory.

Installation & Maintenance Tips

• Always relieve pressure and isolate fluid supply before removing or installing the plug.
• Ensure the flare or threads are clean, undamaged and free of debris before installation; torque to manufacturer spec if provided.
• After installation check for proper sealing; run a low‑pressure test to verify no leaks before normal operation.
• If the disc has ruptured or visible deformation is present, replace with a genuine 15D740 to ensure correct pressure relief performance.

Frequently Asked Questions