Positive Vs Non-Positive Displacement Pumps main difference

[@gaurav6237]

Sir playlist me video fir se arrange kriye , saari video playlist me nhi h
Dhundne me difficulty hoti h

[@udityanarayancom]

❤❤ sir 🙏🙏

[@sudeepdhouchak735]

Sir,
Please make a vedio on Hydrogenation reactor, with saftey standerd.

[@muhammednizam6033]

Screw pump belongs to which catogary

[@siddhrammetre7545]

Pump ke baare main sir sub kuch sahi bat ye hain aap ne video nahi dekha hai .

[@ashok2265]

Positive Displacement