Oil cant flow from A to B during the retraction stroke because, the small cylinders are retracting, they are pulling the piston of the large cylinder, hence oil in the large cylinder is squeezed out and flows from B to A and to the oil reservoir tank.
pre-fill valve is there in between main cylinder and oil reservoir tank. this circuit is slightly difficult, you may not understand clearly in the beginning. repeat the video and listen again.
@@chandrashekarapuranik In the systsm diagram I understood where the prefill valve is positioned, but in circuit diagram you have shown sequence valve, pressure relief valve and counter-balanace valve, I am not able to see prefill valve anywhere in the circuit diagrams that's my doubt, maybe I am missing it in the circuit diagram
Thank u so much sir, nice explanation I have one question sir please I have to install prefill and exhaust valve in in sheet metal Deep drawing hydraulic press. Where against the Large cylinder I have to install Small Cylinder (half diameter of Large cylinder) to be filled by 'B' port of Large cylinder following by check VALVE 1kg and Direct operating pressure relief valve. For deep drawing can it work. Please Suggest the circuit for rear. cylinder. Thanks in advance.
sorry, i am not getting your doubt, can you slightly elaborate your requirement. you don't need exhaust valve in hydraulic press. exhaust valve is a pneumatic valve.
Good explanation Prof. Puranik.
Greetings from the Americas
The best explanation
I hv a doubt sir ,
yes. tell me
Nice explanation Sir... please do many more videos regarding hydraulics....
just one question. Why during the retraction stroke . Oil cant flow from A to B because the path is open
Oil cant flow from A to B during the retraction stroke because, the small cylinders are retracting, they are pulling the piston of the large cylinder, hence oil in the large cylinder is squeezed out and flows from B to A and to the oil reservoir tank.
Sir where is the pre fill valve shown in circuit diagram of hydraulic press ?
pre-fill valve is there in between main cylinder and oil reservoir tank. this circuit is slightly difficult, you may not understand clearly in the beginning. repeat the video and listen again.
@@chandrashekarapuranik In the systsm diagram I understood where the prefill valve is positioned, but in circuit diagram you have shown sequence valve, pressure relief valve and counter-balanace valve, I am not able to see prefill valve anywhere in the circuit diagrams that's my doubt, maybe I am missing it in the circuit diagram
Informative content and video.
Thanx. display More of such type
Thank u so much sir, nice explanation
I have one question sir please I have to install prefill and exhaust valve in in sheet metal Deep drawing hydraulic press.
Where against the Large cylinder I have to install Small Cylinder (half diameter of Large cylinder) to be filled by 'B' port of Large cylinder following by check VALVE 1kg and Direct operating pressure relief valve.
For deep drawing can it work.
Please Suggest the circuit for rear. cylinder.
Thanks in advance.
sorry, i am not getting your doubt, can you slightly elaborate your requirement. you don't need exhaust valve in hydraulic press. exhaust valve is a pneumatic valve.
will there be a pipe connected between the over head tank and bottom tank , to drain excess oil that comes out
Nice explanation
super explanation
Very nice
thanks so much! you save me from hell!
Nice Explanation