Product Description
Dayton 97-153 (WW 97-153) is a hydraulic control valve assembly for manual pallet jack models such as the Dayton 4YX97. This OEM assembly regulates hydraulic fluid for lifting and lowering, constructed from high-strength steel and featuring spool-type valve operation for precise flow control. Compatible with Dayton manual pallet jacks requiring this control valve. See specifications for construction, operating pressure, and compatible part numbers.
Specifications
Hydraulic
| Controlled Hydraulic Function | Up/Down/Neutral flow diversion |
| Flow Direction | Bidirectional flow depending on lever position |
Material & Construction
| Valve Body Material | Machined cast steel or ductile iron |
| Valve Spindle Material | Hardened alloy steel |
| Ball Material (if used in seat) | Chrome steel (SAE 52100) |
| Seal Material | Buna-N nitrile rubber |
Part Numbers
| OEM Part Number | 97-153 |
| Manufacturer Part Number | 97-153 |
| Cross-Reference Part Numbers | Compatible with Grainger 4YX97; no other cross-reference part numbers available |
| Compatible Model Number | Dayton 4YX97 pallet jack |
Frequently Asked Questions
Q: What is the WW 97-153 hydraulic control valve assembly?
A: The WW 97-153 is an OEM hydraulic control valve assembly for Dayton 4YX97 manual pallet jacks. It regulates hydraulic fluid flow for lifting, lowering, and neutral operations using a spool-type valve mechanism for precise flow control.
Q: Which pallet jack models use the WW 97-153?
A: The WW 97-153 is designed for Dayton 4YX97 manual pallet jacks. It controls the up, down, and neutral functions. Verify your equipment serial range and model number match 4YX97 before ordering this assembly.
Q: What does the spool-type valve design do?
A: The spool-type valve uses an internal moving spool to direct hydraulic fluid to different circuits. When you move the handle up or down, the spool shifts to route fluid for lifting or lowering. Neutral position blocks flow. This design provides smooth, responsive control.
Q: What material is the WW 97-153 valve body made from?
A: The WW 97-153 is constructed from high-strength steel to withstand operating pressures and repeated cycling. The valve body is sealed and designed to contain hydraulic fluid without leaks during normal operation.
Q: What symptoms indicate a faulty WW 97-153 control valve?
A: Signs of valve failure include slow or unresponsive lifting and lowering, inability to hold pressure at neutral, external hydraulic leaks, or sudden loss of lift capability. If the jack does not respond to handle movement, the valve assembly may require replacement.