Pilot operated directional control valve ! How works Pilot operated DC valve

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नमस्ते देस्तों
इस विडीयो मे pilot operated directional valve के बारे मे बताया गया है :-
ये भी देखें:-
(1) Hydraulic cartridge valve circuit:- https://youtu.be/D8vRIvv1S4g
(2) how to calculate pump flow :-https://youtu.be/IJBvEacKX1w
(3) How to check pressure relief valve :- https://youtu.be/VjLgnisvRmk
(4) How works Hydraulic pressure switch:- https://youtu.be/_xrQE7R20pw
(5) Hydraulic prefill & Exhaust valve:-https://youtu.be/7U1tGkXrjNY
(6) Pilot operated check valve:- https://youtu.be/atFgYi8Ag-M
(7) how to check DC valve:-https://youtu.be/wN2V-qd2Xvc
(Hydraulic pilot operated dc valve)

(8) How to select pump :- https://youtu.be/L8E21Qr3qQg