Product Description
Palletmaster PM L7 flow valve for manual pallet jacks—precision hydraulic flow control component, compatible with HSW series. Supersedes L7; cross-referenced as PML7, PSL7. Carbon steel, closed-center manual hydraulic system compatibility. Designed for pressures up to 3500 PSI and flow rates to 0.5 GPM; compact, direct-mount construction.
Compatibility: Fits pallet jacks made by Palletmaster, model HSW. SKU: PM L7
Specifications
Hydraulic Specifications
| Valve Type | Flow control valve, in-line configuration |
| Typical Flow Rating | 0.25–0.50 GPM at 2500 PSI |
| Pressure Rating | Up to 3500 PSI |
Material & Construction
| Material Specification | Machined carbon steel housing |
| Seal Material | Nitrile (Buna-N) for hydraulic compatibility |
| Surface Hardness | Induction-hardened working surfaces (minimum Rockwell C40) |
| Construction Type | Compact, direct-mount construction |
Functional Specifications
| Component Function | Hydraulic flow control within manual pallet jack hydraulic circuit |
| Application | Regulates hydraulic fluid flow rate for controlled descent and lift operation |
Part Number Information
| Part Number | PM L7 |
| Cross Reference Part Numbers | PML7, L7, Palletmaster L7, PSL7 |
| Supersedes / Replaces | L7 |
Frequently Asked Questions
Q: What does the PM L7 flow valve do in a manual pallet jack?
A: The PM L7 is a precision hydraulic flow control component that regulates hydraulic fluid flow rate within the pallet jack circuit. It ensures controlled descent speed and stable load handling during operation.
Q: What are the pressure and flow specifications for the PM L7?
A: The PM L7 is designed for pressures up to 3500 PSI and flow rates of 0.25–0.50 GPM. It uses compact, direct-mount construction compatible with closed-center manual hydraulic systems.
Q: Which Palletmaster models use the PM L7?
A: The PM L7 is compatible with Palletmaster manual pallet jacks in the HSW series.
Q: What other part numbers refer to the PM L7?
A: The PM L7 is cross-referenced as PML7, L7, Palletmaster L7, and PSL7. It supersedes and replaces the earlier L7 designation.
Q: What material is the PM L7 made from?
A: The PM L7 is manufactured from carbon steel with induction-hardened working surfaces for durability in hydraulic applications. It is compatible with standard hydraulic fluids in manual pallet jack service.
Q: How do I know if the PM L7 needs replacement?
A: Replace the PM L7 if you notice uncontrolled descent, difficulty maintaining load height, or excessive speed during lowering. These symptoms indicate internal valve wear or blockage.
Q: How should the PM L7 be stored?
A: Store the PM L7 in a clean, dry environment. Keep it sealed in its original packaging or a protective cover to prevent contamination from dust or moisture, which can damage the internal valve mechanism.