Graco 15D740 Rupture Disc Plug
$328.90
$382.00
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The Graco 15D740 Rupture Disc Plug is a safety device that protects high-pressure fluid systems by providing controlled pressure relief in overpressure situations.
- Part Number: 15D740
- Compatibility: Graco T‑Max 405 Texture Sprayer
- Function: Relieves excess system pressure to prevent damage
- Material: Precision-machined for reliable performance
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Genuine OEM Part
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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
| Part Number | 15D740 |
|---|---|
| Type | Rupture Disc Plug / Safety Relief Plug |
| Application | Used in high‑pressure fluid systems of Graco texture sprayers (e.g., T‑Max 405) to provide controlled rupture relief. |
| Material / Construction | Precision‑machined plug with integrated rupture disc or relief element |
| Installation Location | Installed in the fluid outlet or pump assembly where overpressure protection is required. (Ref: parts list shows item 230 “15D740 Plug, disc, rupture” in the pump kit). |
| Replace As | Critical safety item — replace immediately if triggered, damaged or outside specification |
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
The 15D740 plug serves as a safety relief device: when system pressure goes above the safe threshold, the integrated rupture disc gives way to protect the pump or hose system from catastrophic failure.
Replace the plug immediately if the disc has ruptured, the unit shows signs of corrosion, damage or deformation, or if system priming pressure no longer holds. Using a compromised plug may void safety integrity.
It is strongly recommended to use the genuine 15D740 from Graco. While a generic may fit physically, proper pressure rating, material compatibility and sealing specifications may not be met, risking safety and performance.
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