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Graco 15T390 Diffuser Dump Valve

The Graco 15T390 Diffuser Dump Valve provides safe, reliable pressure‑release control for high‑pressure spray systems.

  • High‑precision dump valve for fluid systems
  • Supports maintenance and safe pressure release
  • Designed for industrial high‑pressure spray equipment
  • Special‑order part—check availability

$17.69
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Graco 15T390 Diffuser Dump Valve – Precision Pressure Release Component

Compatible Machines

  • Graco spray and pump systems featuring the 15T390 diffuser dump valve part
  • Industrial high‑pressure coating systems requiring a safe pressure dump function
  • Fluid delivery units where reliable dump valve operation is critical for maintenance and safety

The Graco 15T390 Diffuser Dump Valve is engineered as a high‑precision safety component that enables controlled pressure release and fluid isolation within spray systems. Its design ensures consistent functionality under demanding industrial conditions.

Key Features

Part Number 15T390
Function Diffuser and dump valve for fluid/pressure release
Application High-pressure spray systems requiring dump functionality
Benefit Safe, reliable, supports system maintenance and pressure relief
Availability Special‑order part; lead time may apply

Installation & Usage Tips

  • Ensure the system is fully depressurized before removing or installing the valve.
  • Verify correct orientation and seating of the diffuser to guarantee proper function.
  • Inspect seals and surrounding components for signs of wear or damage during each maintenance cycle.
  • Replace immediately if the valve fails to seat or leaks under pressure release conditions.
  • Keep a record of dump valve servicing intervals for safety compliance and system reliability.

Frequently Asked Questions

Yes, if your system uses the same mounting, port and dump‑valve interface that matches part 15T390 — always verify dimensions and configuration.

Regular inspection of the diffuser element and seals is required. If leakage occurs or release is inconsistent, the valve should be serviced or replaced.

Yes — the valve is designed for dump operations at elevated pressure, but installation must follow correct system specifications and service intervals.

Refer to model documentation for port alignment; ensure the diffuser outlet faces correct direction and the mounting bolts match the original part pattern.

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