Pressure-reversing valves
Lalmek's unique and proven pressure-reversing directional valve creates an automatic back-and-forth motion without any electrical components—and therefore replaces limit switches and pressure switches.
How the Pressure-Reversing Valve Works
The valve reverses the direction of motion of a hydraulic cylinder or hydraulic motor that is designed to operate in an automatic back-and-forth cycle. Automatic pressure reversal occurs when the set reversal pressure is reached, i.e., when the cylinder reaches its end position or when the load exceeds the set pressure. The reversal is entirely hydraulic; no electrical components or signals are required.
The valve replaces limit switches and pressure switches.
Easy adjustment
The valve has a single adjustment for both the pressure relief valve and the reversing pressure in both directions. The adjustment is made using an adjustment knob with a graduated scale. No tools or pressure gauge are required when adjusting the pressure. The valve can also be operated manually using the two push buttons on the sides of the valve.
Limited maximum pressure
The valve’s adjustment knob has a stop to prevent the user from accidentally overloading the hydraulic system and other machine components. The valve is shipped with this stop set to a specific value.
Technical Specifications
NG10 Pressure-Reversing Valve
Automatic direction switching for higher flow rates
NG6 Pressure-Reversing Valve
Automatic direction change without electricity
Dimensional drawings and pressure drop curve
NG6 Pressure-Reversing Hydraulic Valve
NG10 Pressure-Reversing Hydraulic Valve
Pressure Drop Curve
Questions & Answers
Do you need a pressure-reversing valve?
Contact us for advice on the correct valve size and flow range for your application.