How to diffuse high pressure 15,000 psi to 0 atmospheric pressure from a equipment 2

[ppatel1]

A pipe contains water at 80 Deg F , pressure inside the system is 15,000 psi, if the pressure has to be released (atmospheric pr), but still needs to be conatined inside a closed chamber before releasing out on ground. How would I achieve this? can someone help.

 

[MikeHalloran]

Open a valve to an empty chamber capable of withstanding the pressure.
Let the flow proceed through a restrictor like the Lee Bender Jet:

http://www.theleeco.com/JETWEB2.NSF...9cdc1d1cde7b0899852574270051450e!OpenDocument

Close the valve.
Open another valve that vents the chamber to atmosphere,
and a third valve that drains the chamber.
Let the chamber drain.
Close all valves.
Repeat until the pressure is fully relieved.




Mike Halloran
Pembroke Pines, FL, USA

 

[israelkk]

MikeHalloran

The Lee restrictor is rated for up to 5000psi?

 

[MikeHalloran]

Thank you israelkk for catching that.

Ppatel1, Oops. Don't use the stock Lee part.
Do call and ask about a special, reinforced for your pressure.

What I described amounts to a DB&B manifold. It could have a special geometry allowing insertion of interchangeable throttling orifices, or it could have a needle valve or a capillary to do the throttling.

Or, if your valves are sturdy enough and open slowly, maybe you don't need a restrictor other than the valve.


Mike Halloran
Pembroke Pines, FL, USA

 

[ppatel1]

Thanks for the feed back, it does help.

 

[zdas04]

It really depends on how fast you need it depressurized and how much fluid has been raised to that pressure. If it is a joint of 4-inch pipe that you can take an hour to depressurize, then you can use a needle valve and a plastic bucket. If it is a cubic mile of water, that you need to depressurize in 5 minutes, then you might want to get a little more exotic.

David Simpson, PE
MuleShoe Engineering

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