Graco 158485 Flat Gasket

Graco 158485 Flat Gasket Overview

Compatible Machines

• Graco automatic pressure‑control valve assemblies (Housing 158331 series)
• Graco industrial fluid‑handling equipment using plunger valve modules (Seat 158483 / Valve 158484)

Product Overview

The Graco 158485 Flat Gasket is a precision‑cut sealing ring (typically copper) designed to fit between key valve housing components to ensure a tight seal and prevent fluid or pressure leakage.

It is used in valve assemblies alongside Seat 158483 and Valve 158484, providing a critical interface for maintaining reliable operation in high‑pressure and industrial coating systems.

Key Specifications

Usage Recommendations

• Always check your machine’s parts manual to verify the valve housing uses gasket 158485 before ordering.
• Replace the gasket if you observe any fluid leakage or pressure drop around the valve assembly.
• Ensure mating surfaces are clean and undamaged before installing the new gasket to maximize sealing performance.
• Use the correct torque and follow the manufacturer’s procedure during assembly to avoid damage to the flat gasket or valve housing.

Frequently Asked Questions