Product Description
The 550090846 is a direct replacement valve cartridge designed for Yale YA55-PT manual pallet jacks equipped with Type Y hydraulic pump assemblies. This precision-machined steel component provides reliable hydraulic control for smooth lifting and lowering operations. Compatible with nitrile and polyurethane seals, it delivers consistent performance under continuous manual pump duty cycles.
Specifications
Hydraulic
| Seal Compatibility | Utilizes OEM nitrile and polyurethane seals—reference part number 550090845 |
Material
| Surface Finish | Machined steel, bright finish per manufacturer hydraulic specification |
| Seal Material | Nitrile rubber (NBR), polyurethane (PU) |
Part Numbers
| OEM Part Number | YL 550090846 |
| Manufacturer Part Number | 550090846 |
| Model Compatibility | Compatible with Yale YA55-PT manual pallet jack |
Performance
| Cycle Rate | Rated for manual pallet truck pump duty—maximum 120 cycles per hour continuous use |
Frequently Asked Questions
Q: What is the YL 550090846 valve cartridge and what does it do?
A: The YL 550090846 is an OEM valve cartridge for Type Y hydraulic pump assemblies in Yale manual pallet jacks. It provides precise hydraulic control to regulate flow and pressure during lifting and lowering operations.
Q: Which Yale manual pallet jack models is this valve cartridge compatible with?
A: The YL 550090846 is designed for Yale YA55-PT series manual pallet jacks equipped with Type Y hydraulic pump assemblies. Confirm your pump assembly type matches before ordering.
Q: What seals are compatible with this valve cartridge?
A: The YL 550090846 utilizes OEM nitrile and polyurethane seals. Reference seal kit part number YL 550090845 for compatible seal assemblies. These seal materials are compatible with standard hydraulic fluids used in material handling equipment.
Q: What is the construction material and surface finish?
A: The valve cartridge is machined from steel with a bright (polished) finish per manufacturer hydraulic specifications. Machining tolerances are precise to ensure tight fit in the lever plate cavity and reliable valve operation.
Q: How does the valve cartridge fit into the pump assembly?
A: The YL 550090846 is press-fit into the lever plate cavity of the Type Y hydraulic pump assembly. The cartridge body diameter and length are precisely machined for secure installation without additional fasteners in the cavity itself.