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• # Determining the correct spring for a certain water pressure - psi

Discussion in 'Calculations' started by Hikingff77, Oct 23, 2013.

1. ### Hikingff77New Member

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Oct 2013
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I am trying to determine if the spring in a valve has the right Rate for our application. The Rate of the spring that is in the valve is 29lbs/in. The spring holds a plug closed, under normal water pressure, I need to know if the spring will be able to handle a higher water pressure, something like 125 psi. So when the plug retracts, the spring can close the plug against the water pressure.

I don't want to ramble on here, if you can give me some help or have some questions I can answer, I'd be grateful. I know what I'm trying to achieve but I'm stumbling on how to get there.

2.
3. ### ErichWell-Known Member

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Feb 2012
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You need to know two more pieces of information.

1. Cross section area of plug. ie, area that water pressure pushes on.

2. The compressed length of spring.

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