Graco 15F804 Regulator Needle

Product Overview

The Graco 15F804 Regulator Needle is a genuine OEM replacement needle for Graco fluid regulators. It controls the flow or pressure inside the regulator assembly, ensuring accurate regulation and stable performance in spray systems, pumps or coating equipment. Using an authentic regulator needle helps maintain precise fluid control and avoids leaks or malfunctions caused by worn or damaged parts.

Key Features

• OEM‑grade part: Original Graco regulator needle specified for proper fit and reliable operation.
• Precise flow control: Regulates fluid pressure or flow within the regulator for consistent spray or pump performance.
• Durable construction: Lightweight but sturdy design ensures long service life even under frequent use.
• Easy replacement: Simple to swap in when the existing needle shows wear or degradation — no major overhaul needed.
• Maintain system integrity: Proper sealing and regulation help prevent leaks, pressure instability, or damage to connected components.

Specifications

Maintenance & Installation

• Depressurize and drain the system before removing or installing the regulator needle to avoid leaks or fluid injury.
• Inspect the regulator seat/housing for wear or damage before installing the new needle — a damaged seat can cause leaks even with a new needle.
• Ensure proper alignment and seating when inserting the new needle; misalignment may cause improper sealing or pressure regulation failures.
• After installation, bleed the system and test under working pressure to confirm correct regulator performance and leak-free sealing.
• Check periodically during maintenance intervals for wear — especially if the system handles abrasive fluids or experiences frequent cycles — and replace the needle as needed for consistent performance.

Frequently Asked Questions