Graco 16E987 Plug Ratio Check

Graco 16E987 Plug Ratio Check – Detailed Part Information

Graco 16E987 Plug Ratio Check is a precision plug used in ratio-check procedures on select Graco 2-component mix manifold systems. It allows accurate isolation and verification of resin and hardener flow during maintenance or calibration.

Compatible Machines

This part is used specifically on Graco multi-component sprayers equipped with the required mix manifold design.

• Graco XP70 Proportioner Systems (mix-manifold equipped)
• Graco 2-Component Mix Manifold Assemblies that accept Ratio Check Plug 16E987

Part Overview

The 16E987 Plug Ratio Check is designed to temporarily divert material flow during ratio-verification tests. It fits over the hardener outlet tube of supported Graco mix manifolds and functions as part of the ratio-check assembly to ensure the correct resin-to-hardener mix ratio for 2K systems.

Key Functions

• Enables accurate ratio-check procedures on compatible Graco 2K systems
• Helps diagnose pump wear, flow imbalance, or material delivery issues
• Supports quality assurance by confirming correct mix ratio before spraying
• Used during temporary removal of the static mixer hose for sample collection

Usage Notes

• Install during ratio-check procedure as instructed in the system manual
• Remove after testing and reinstall the standard outlet/mixer configuration
• Ensure feed pressure remains below 25% of proportioner output during testing

Frequently Asked Questions