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Graco 15K031 Nut Packing 220-250cc Wet Cup

The Graco 15K031 Packing Nut (220‑250 cc Wet‑Cup) is designed for very high‑capacity pump systems, securing the packing assembly in large wet‑cup style configurations.

  • Packing nut for 220‑250 cc wet‑cup pumps
  • Heavy‑duty OEM design for large‑scale applications
  • Prevents high‑volume fluid leakage under heavy duty

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Graco 15K031 Packing Nut 220‑250 cc Wet‑Cup – Product Overview

Compatible Machines

  • Graco pump assemblies with 220‑250 cc wet‑cup packing bore
  • Large mobile or stationary sprayer platforms demanding high volume capacity

The Graco 15K031 Packing Nut (220‑250 cc Wet‑Cup) is engineered for the largest capacity Graco pumps, where fluid volume and system stress are significant. It holds the packing securely in place to ensure proper sealing even under heavy loads and high pressures typical in industrial spraying applications.

Key Feature Description
Sizing for 220‑250 cc Wet‑Cup Ensures correct component fit for large‑capacity pumps.
Heavy‑Duty Construction Handles extreme pressure and fluid volume.
Seal Integrity Prevents fluid bypass in large systems.
Easy Service Access Designed for convenient replacement in large systems.

Installation & Maintenance Tips

  • Ensure system is depressurized before opening.
  • Inspect packing bore, shaft surface and previous nut for wear.
  • Install new nut to correct torque, avoiding over‑stress of packing.
  • After install, monitor pressure, seal performance and return line for signs of leakage.

Frequently Asked Questions

Wet‑cup pumps have larger bore size and volume; the nut size is scaled to properly retain the larger packing area and higher fluid loads.

No — using a smaller nut can cause insufficient packing compression, leading to leaks and excessive wear.

Signs include fluid seepage around the nut, packing shifting, decreased pressure or irregular pump cycles.

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