Product Description
Steel ball check component for Valu-Jack 5500-2 hydraulic unit assemblies. This direct replacement part is designed for manual pallet jack valve system applications, providing reliable pressure sealing and load hold capability. Factory-spec compatible with Valu-Jack 5500-2 series equipment.
The steel construction delivers hardness and wear resistance under repeated valve operation cycles. Ideal for maintenance and repair of hydraulic lift systems requiring precision valve components.
Specifications
Material
| Material Specification | Steel construction |
Part Numbers
| OEM Part Number | VJ 55F139 |
| Compatible Equipment Model | Valu-Jack 5500-2 Hydraulic Unit |
| Alternate Compatible Model | Valu-Jack 5500-35 Manual Pallet Jack |
Frequently Asked Questions
Q: What is the VJ 55F139 steel ball component?
A: The VJ 55F139 is a steel ball component designed for the Valu-Jack 5500-2 hydraulic unit assembly. This check ball interfaces with the valve seat in the hydraulic control system to seal pressure lines and maintain lift hold during loaded operation.
Q: Which Valu-Jack models accept the VJ 55F139 steel ball?
A: The VJ 55F139 fits Valu-Jack 5500-2 Hydraulic Unit and alternate compatible model designations including 55002 Hydraulic Unit and 5500-2 Hydraulic Unit. It also fits Valu-Jack 5500-35 manual pallet jacks. Verify your equipment model matches before ordering.
Q: What is the material composition and durability of the VJ 55F139?
A: The VJ 55F139 is manufactured from steel, providing hardness and wear resistance under repeated contact with the valve seat. Steel construction maintains pressure sealing over thousands of pump cycles. The ball resists deformation during normal load holding operations.
Q: What symptoms indicate the VJ 55F139 check ball needs replacement?
A: Replace the VJ 55F139 if hydraulic fluid leaks from the control valve assembly, if the pallet jack will not hold pressure during a load, or if the ball shows visible pitting or corrosion. A damaged check ball cannot seal properly against the valve seat, causing pressure loss.
Q: How does diameter affect VJ 55F139 compatibility?
A: The check ball must match the exact diameter of the valve seat opening to create a proper seal. Using an oversized or undersized VJ 55F139 will result in leaking and loss of lift hold pressure. Verify ball diameter against your hydraulic unit specification sheet before ordering.