Integrated Hydraulics has extended its range of bidirectional poppet valves with the introduction of a new 90ltr valve. The S716 valve is normally open, and when energised will close, preventing flow in either direction. An actuator controlled by this valve will be locked in position despite varying induced loads or changes in system pressure. The simple poppet design of the S716 and its sharp edged seat, coupled with closely controlled roundness and surface finish ensure consistency of quality, giving minimal internal leakage – less than 2.7cm3/min at a 280bar pressure differential. All moving parts are hardened and ground, and internal bearing surfaces honed. Despite the close working clearances, these valves are remarkably tolerant of contamination because the fluid washes over the seat, clearing it each time the valve is de-energised. This new cartridge valve is designed for working pressures up to 280bar and has a nominal flow rate of 90ltr/min. The S716 is designed to work in harmony with Integrated Hydraulics’ other solenoid operated directional valves and their range of flow, pressure and motion control valves.