Graco 15B506 Intake Suction Tube

Graco 15B506 Intake / Suction Tube is an OEM replacement that ensures smooth and reliable paint flow from the bucket to the pump in Graco Hi-Boy sprayers. Perfect for restoring prime performance.

Part Number: 15B506
Fits Models: Ultra Max II 490, 495, 595 Hi-Boy; Nova 395
Function: Draws coating material from container to pump
OEM Quality: Genuine Graco part for proper fit and seal

Retail Price: $39.7

You save: $0.79000000000001 (1.99%)

Our Price: $38.91

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Description

Overview: OEM Intake / Suction Tube (15B506)

Graco 15B506 is a genuine Intake / Suction Tube that draws material from the paint bucket into the pump. It’s designed for durability and reliable priming on compatible Hi-Boy cart sprayers.

If your sprayer struggles to prime, has air leaks at the bucket, or the tube is bent/cracked, replacing it with the 15B506 is the recommended fix.

Compatible Machines

Graco Ultra Max II 490 (Hi-Boy)
Graco Ultra Max II 495 (Hi-Boy)
Graco Ultra Max II 595 (Hi-Boy)
Graco Nova 395 (Hi-Boy)

Note: Model naming may vary by region/trim. If your unit is not listed, match by the part number in your sprayer’s parts manual or contact us.

Key Specifications

Part Number	15B506
Item	TUBE, Suction / Intake
Compatibility	Selected Ultra Max II and Nova Hi-Boy cart sprayers (see list above).
Fitment Zone	Bucket-end suction assembly to pump inlet.
Build	Heavy-duty tube with solvent-resistant seals (OEM-grade quality).
What’s Included	Intake/Suction Tube (15B506) only. Related gaskets/filters sold separately.

Why Choose the Graco 15B506

OEM precision for correct length, angle, and seal alignment.
Reliable priming and consistent material flow to protect your pump.
Direct replacement no modification required on listed Hi-Boy units.
Durable construction for solvent coatings commonly sprayed with airless units.

Fitment & Installation Notes

Inspect the intake O-ring/washer and replace if nicked or flattened to prevent air leaks.
Ensure the prime/spray valve and inlet strainer are clean to support fast priming.
Hand-tighten, then snug as specified in your sprayer manual—do not over-torque.

Tip: If your machine still won’t prime after installing the 15B506, check for cracks in the drain/return hose, worn inlet seals, or a clogged inlet strainer.

Frequently Asked Questions

No—15B506 is a genuine Graco part with the correct length, bends, and seal interfaces for the listed Hi-Boy models. Generic tubes can cause air leaks or poor priming.

This tube is specified for selected Hi-Boy configurations. Some Lo-Boy/stand units use different intake geometries. Always confirm with your model’s parts manual before ordering.

Slow or failed priming, visible cracks or kinks, material foaming at the bucket, or air entering at the intake connection typically indicate a worn or damaged tube.

We recommend inspecting/replacing the intake O-ring/washer and checking the inlet strainer. These low-cost parts often cause priming issues if worn or clogged.