Unloading Valve Maintenance Kit – Product Overview 

Product Overview

The Unloading Valve Maintenance Kit provides a complete set of components for servicing hybrid unloading valves that combine features of conventional unloading and pressure regulating valves. These kits restore precise pressure control in hydraulic and pneumatic systems while optimizing energy efficiency.

Key Features

✔ Complete Seal & Trim Replacement - Includes all critical wear components
✔ Hybrid Valve Compatibility - Works with quasi-unloading valves from major brands
✔ Precision-Calibrated - Maintains original pressure control accuracy (±1.5% FS)
✔ Energy Efficient Design - Restores proper pump unloading function
✔ Multi-Material Options - Standard and high-pressure configurations

Technical Parameters Table

Applications

✔ Mobile Hydraulics - Excavator/loader control systems
✔ Industrial Presses - Energy-saving hydraulic circuits
✔ Test Stands - Cyclic load simulation equipment
✔ Energy Recovery - Hybrid machine power units
✔ Marine Systems - Deck machinery controls

Benefits

• Restores Energy Efficiency - Proper pump unloading reduces power consumption

• Maintains System Pressure - Precise quasi-unloading characteristics

• Prevents Pressure Spikes - Renewed components eliminate hammering

• Extended Service Life - Hardened materials resist wear

• Quick Rebuild - Simplified kit with installation guide

Standard Kit Includes:

• Pilot valve seat and poppet

• Main stage seals and O-rings

• Calibration spring set

• Wear plates and bushings

• Anti-galling compound

• Step-by-step rebuild manual

Maintenance Schedule

Optional Upgrades:

1. High-Pressure Kits (Up to 10,000 psi/690 bar)

2. Water-Glycol Compatible Seals

3. Corrosion-Resistant Trim Packages

4. Performance Monitoring Sensors

This maintenance solution ensures your quasi-unloading valves maintain optimal energy-saving performance while preventing costly system downtime. Request OEM-specific compatibility details for your equipment!