Feroy series parallel valves are designed to operate two hydraulic motors at two speeds. These two-position valves provide high speed and low torque in the series mode, and low speed and high torque in the parallel mode.
To avoid pressure surges, all ports are interconnected during spool movement. In either of the two positions, the spool isolates one circuit from the other.
The valves are made of high-tensile ductile iron and include a heat-treated spool lapped to fit the housing. This reduces internal leakage and provides maximum efficiency.
The valves are designed with large flow passages, amply sized for the rated flow, greatly reducing the pressure drop across the valve.