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An expansion adding approximately 70 acres to the facility was completed in 1979. Other agencies, such as the Fresno Irrigation District and the Fresno Municipal Flood Control District, built their own groundwater recharge facilities. The total construction and land costs for the expanded facility was $1,457,100. [8]
Here, small valves were attached to the original control cables, controlling the flow of oil into an associated actuator connected to the control surface. One of the earliest fittings of a hydraulic boost system was to ailerons on late-war models of the P-38L, removing the need for great human strength to achieve a higher rate of roll. [2]
Simple hydraulic control valves are binary, they are either on or off. Servo valves are different in that they can continuously vary the flow they supply from zero up to their rated maximum flow, or until the output pressure reaches the supplied pressure. More complex servo valves can control other parameters.
The most commonly used control pattern throughout the world is the ISO controls. In the ISO control pattern, the left hand joystick controls Swing (left & right) and the Stick Boom (away & close), and the right hand joystick controls the Main Boom (up & down) and Bucket motions (close & dump). This control pattern is standardised in ISO 10968 ...
Reservoir Dam River County Owner Completed Type Height of dam [a] Reservoir capacity (ft) (m) (acre ft) (1,000 m 3) ; Almaden Reservoir: Almaden Dam: Alamitos Creek
Sequence valves control the sequence of hydraulic circuits; to ensure that one hydraulic cylinder is fully extended before another starts its stroke, for example. Hydraulic circuits can perform a sequence of operations automatically, such as trip-and-reclose three times, then lockout, of an oil-interrupting recloser .
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