Check valve Position 8

[alienitmeca]

Hello,

When designing your piping layout, one would certainly have to use a fair amount of valves of various types (check valves, gate valves, butterfly valves...) to choose one type over the other demand some thinkig along with good engineering skills and operating conditions, My question is included in this department:

when on uses a check valve along with a gate valve (at the outlet of a pump, inlet of storage tank...) how to know when to put check valve then put gate after in it or is it the other way around ? Could you help me how to decide in this matter.

Thnk you

 

[europipe]

What about spect. blinds then?
They have also longer bolt lenghts.

 

[LittleInch]

Not as long as those being noted in the reports.

Mostly they refer to flangeless valves, but clearly the longer the bolt the worse it gets in terms of expansion in the event of fire.

My guess would be if you more than double the length of the bolt then you start to run into that issue, but haven't done any calcs on that.

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