Boosting Oil Pressure with a Pressure Booster: The Science Behind It

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Using a Milwaukee pressure booster to achieve 160 PSI from 80 PSI shop air is feasible, as the output pressure is determined by the cylinder area to rod area ratio. Blocking the oil path will indeed increase pressure, as the booster will reach its maximum output based on the compression ratio. However, this setup limits the volume of oil available per cycle to the capacity of the booster cylinder. If the oil path remains unblocked, the booster will push oil through until it reaches the end of its travel, potentially not achieving full boosted pressure. Understanding these dynamics is crucial for effective circuit design.
Yogesh Kulkarni
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Hello,
I am trying to design a hydro penumatic circuit. I have shop air at 80 Psi. I need hydraulic pressure of 160 PSI. So I am using pressure booster/Intensifier to pressurise it. there will be air on one side of intensifier and oil on other side of it. my question is if I block path of oil will there be increase in pressure?
 
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Welcome to PF.

It will depend on what type of intensifier are you using.
Please give us a link to the device.

If all you want is pressure with very low flow you might be able to use a hydraulic cylinder with oil on the rod side and air on the piston face. Many cylinders have a rod area that is close to half the piston face area.
 
Baluncore said:
Welcome to PF.

It will depend on what type of intensifier are you using.
Please give us a link to the device.

If all you want is pressure with very low flow you might be able to use a hydraulic cylinder with oil on the rod side and air on the piston face. Many cylinders have a rod area that is close to half the piston face area.
Thanks for your reply.
I am using milwaukee pressure booster
http://www.milwaukeecylinder.com/
 
Yogesh Kulkarni said:
my question is if I block path of oil will there be increase in pressure?
Yes. The pressure ratio of a booster is fixed by the ratio of cylinder area to rod area. The maximum output pressure will be the input pressure * compression ratio.
The volume of pressure boosted oil available per cycle is limited to the booster cylinder oil capacity.
If you do not block the oil path, the booster will push oil through the system until the booster reaches the end of it's travel, without reaching the full boosted pressure.
 

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