E320D Excavator Foot Pedal Valve 20X20X15cm Foot Brake Valve

Excavator Parts E320D Foot Brake Valve Pedal Valve Excavator Gp-pilot Excavator Valve Foot Pedal Valve

Core Functions

• Travel Control (Most Common Usage): Left‑right foot pedals match left‑right tracks. Pressing pedals drives forward or reverse travel, with pedal travel determining moving velocity.
• Attachment Switching & Control: Controls activation and working states of attachments including breakers, quick hitches and hydraulic cutting shears.
• Auxiliary Movement Fine‑tuning: For certain excavator types, it precisely adjusts boom and stick motions or coordinates with joysticks for multi‑action compound work.
• Neutral Safety Lock: Automatically resets to neutral when released, disconnecting pilot pressure to prevent accidental machine operation.

Working Principle

• It is a pilot control valve producing low‑pressure signals instead of directly powering travel motors.
• Un‑pressurized condition: Automatic neutral return, no pressure output and machine remains still.
• Pressurized condition: Spool shift outputs hydraulic signals to the main multi‑way valve to control travel motor operation.
• Release condition: Spring‑powered reset stops all controlled movements instantly.

Common Faults

• Uneven track movement: Single‑side pedal valve internal leakage or spool sticking
• Pedal rebound failure: Broken spring or blocked spool core
• Insufficient travel force: Inadequate pilot pressure or valve wear
• Oil leakage trouble: Deteriorated sealing gaskets or impaired valve body

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