Explain the construction and working of the following DCVs with the help of neat diagrams depicting the valve notations, valve nomenclature, actuation symbols, and the respective flow directions in actuated and unactuated states:
c) Solenoid actuated 5/2-way DCV
d) Pilot line (pressure) actuated 4/2-way NC DCV
e) Foot pedal operated 4/3-way DCV