Product Description
VALVE SPRING
Compatibility: Fits pallet jacks made by BT Prime Mover, model VALVE SPRING. Alternate model: VALVESPRING. SKU: BT 38679
Frequently Asked Questions
Q: What does the BT 38679 valve spring do?
A: The BT 38679 is a valve spring designed for BT Prime Mover manual pallet jack hydraulic pump valve assemblies. It provides the return force that closes the pump discharge valve after pressure relief, regulating hydraulic system pressure and controlling flow between lift and lower cycles.
Q: What pallet jack models use the BT 38679 valve spring?
A: The BT 38679 is designed for BT Prime Mover pallet jacks equipped with the corresponding valve spring assembly. Identify your pump valve part number to confirm compatibility before ordering.
Q: What material is the BT 38679 valve spring made from?
A: The BT 38679 is manufactured from high-carbon alloy steel, heat-treated and stress-relieved to maintain consistent spring rate over millions of compression cycles. This material resists corrosion and fatigue failure common to hydraulic valve springs.
Q: How do I know if the BT 38679 valve spring needs replacement?
A: Replace the BT 38679 if the pump pressure relief valve sticks or chatters, if the jack loses hydraulic pressure during extended hold periods, or if the spring is visibly corroded or deformed. A failed valve spring results in pressure loss and inability to maintain load.
Q: What is the spring rate specification for the BT 38679?
A: The BT 38679 is calibrated to the pressure relief setting of the BT Prime Mover pump valve assembly. Do not attempt to substitute springs from other manufacturers or models, as incorrect spring rate will cause pressure drift or valve malfunction. Use only OEM-specification springs.