Graco 15H178 Plate Valve

Compatible Machines for the 15H178 Plate Valve

• Graco diaphragm pump assemblies
• Graco fluid‑handling equipment with plate valve interfaces
• Industrial spray and coating systems requiring valve plate replacement

Product Overview

The 15H178 Plate Valve is a precision‑manufactured replacement component engineered to restore proper fluid control in diaphragm pump and high‑pressure spray systems. It serves as a critical sealing and flow‑management interface, ensuring consistent valve action and optimized performance.

Designed for durability and reliability under rigorous job‑site conditions, this plate valve supports smooth switching of fluid paths, maintains integrity under repeated cycling, and helps prolong the life of connected pump assemblies and systems.

Key Features

Installation & Usage Tips

• Stop the machine, relieve residual fluid pressure and secure all system components before servicing.
• Remove the existing valve plate, clean the mating surfaces thoroughly of contaminants, old gasket material or buildup.
• Install the 15H178 Plate Valve aligning bolt holes properly and using correct torque settings as per manufacturer guidelines.
• Ensure the sealing face mates flush against its counterpart and that no foreign particles interfere with the interface.
• After reinstalling, cycle the system at low pressure and check for proper valve switching and no leaks before returning to full service.
• During routine maintenance, inspect the valve plate for signs of wear, pitting, or corrosion – prompt replacement preserves system performance.

???? Frequently Asked Questions