Reduce pressure from high pressure receiver to low pressure receiver

[y2j]

if one want to reduce pressure from high pressure receiver to low pressure receiver for example in the range of (0 to 10 bar) what he must to do?
any valve can use it for this task?

 

[jack action]

Is this what you need?

http://www.hydroprocess.fr/images/amplification-pression.jpg​

If you need to keep the same fluid on both side, it can be transformed into a proportioning valve by putting a hole through the piston and a metering valve at the inlet (in orange) like this:

Every time P2 increases, it pushes the piston and opens the metering valve. As the pressure P1 builds up, it moves the piston back and closes the metering valve. A greater P2 needs to be created to open it again and increase P1 again (which is always smaller than P2 according to the diameter ratio). Brake systems use a similar valve, except that there is a spring acting on the piston (in the white zone) such that the pressure ratio is 1:1 up to a threshold pressure and then the proportioning starts once P1 X S1 is greater than P2 X s2 plus the spring force, which give an output as shown below (the valve shown can adjust the spring preload with the lever and thus change the threshold pressure):

 

[y2j]

thanks
if I use a hand valve it could reduce pressure from (5 bar) to (1bar) (hand valve only not contain a spring regulator)?
Is this true ?

 

[jack action]

http://www.advancevalves.com/large-size-balancing-valve.aspx. A regulator keeps a constant output pressure no matter the input pressure as shown below.

 

[y2j]

OK my sir thanks again
Is hand valve can yield this pressure drop (5bar ) to (1bar) if the outlet flow is reduced to a very small amount comparing with that at inlet?

 

[jack action]

If you close the valve completely, you can reduce the output pressure to zero!

 

[y2j]

if closing the valve occurs gradually what happen ?

 

[jack action]

The output pressure (and flow) reduces gradually.