Product Description
Check valve kit
Frequently Asked Questions
Q: What is included in the YL 518818806 check valve kit?
A: The YL 518818806 check valve kit contains the valve body, internal check mechanism, seals, and fasteners required for assembly or replacement in Yale hydraulic systems. Verify the kit contents match your equipment specification before installation planning.
Q: What does the YL 518818806 check valve control in a hydraulic system?
A: The check valve allows hydraulic fluid to flow in one direction only, preventing backflow and protecting against pressure spikes or system damage. In lift trucks, it maintains load holding and prevents drift when the pump stops.
Q: Which Yale electric lift truck models are compatible with the YL 518818806 check valve kit?
A: The YL 518818806 fits specific Yale lift truck models and hydraulic configurations. Confirm your truck model, serial number, and system pressure rating match this component to ensure proper function and safety.
Q: What materials does the YL 518818806 check valve kit contain?
A: Check valve kits typically include ductile iron or ductile steel valve bodies, polyurethane or EPDM seals, and stainless steel fasteners. These materials resist hydraulic fluid degradation and maintain reliable sealing performance.
Q: What indicates the YL 518818806 check valve is failing?
A: Failure symptoms include load creep (mast or forks drifting down), reduced pressure holding, audible chatter or noise from the valve, or visible fluid leakage around the valve body. These signs indicate the check mechanism or seals require replacement.
Q: How long does the YL 518818806 check valve kit last in service?
A: Check valve lifespan depends on duty cycle, hydraulic fluid condition, and system pressure. Regular fluid changes and maintaining correct pressure ratings extend service life. Replace if load holding fails or leakage develops.