Graco 15B611 Intake Valve Housing

Detailed Overview of the Graco 15B611 Intake Valve Housing

Compatible Equipment Models

This component is designed for use in selected Graco airless spray pump units and fluid handling systems.

• Graco 390 / 395 series machines
• Graco 495 / 595 series machines
• Graco Ultra Max / Ultimate MX pump units

Product Description

The Graco 15B611 Intake Valve Housing serves as a structural enclosure and mounting point for the intake valve assembly in Graco fluid and airless paint sprayer pumps. It houses the internal valve mechanism that allows fluid to enter the pump chamber reliably while maintaining proper alignment, sealing, and pressure integrity.

Built to OEM standards, this intake housing is machined and finished to provide precise fitment with the mating pump body, includes seating surfaces for valve components, and ensures durable operation under the demands of high‑pressure spraying. By replacing a worn or damaged housing, you restore the pump’s ability to maintain correct valve function, reduce leaks, and extend service life.

Key Features & Specifications

Why This Part Matters

Inside a high‑pressure spraying pump, the intake valve housing is a critical structural part. If the housing is cracked, worn, or improperly seated, fluid may bypass the valve, leaks may occur, and pump performance can suffer. The 15B611 ensures the correct seal and support for the intake valve, maintaining consistent performance and reducing maintenance issues.

Installation & Maintenance Advice

• Remove the pump assembly and clean all mating surfaces before installing the new housing.
• Inspect the intake valve, seals and seats for wear—replace if necessary alongside the housing.
• Torque mounting bolts to manufacturer specifications to prevent misalignment or leakage.
• After installation, run the pump at low pressure to verify no leaks and ensure stable fluid intake behavior.

Frequently Asked Questions