Pipe discharge configuration
Pipe discharge configuration
(OP)
Hi guys,
I always see that the drain valve on a pump discharge is between the NRV/check valve and the downstream block valve (NRV, drain valve, block valve). Is there a particular reason why the arrangement is like that? I.e. can I have instead the drain valve up stream of the NRV? (drain valve, NRV, block valve).
Thanks in advance.
I always see that the drain valve on a pump discharge is between the NRV/check valve and the downstream block valve (NRV, drain valve, block valve). Is there a particular reason why the arrangement is like that? I.e. can I have instead the drain valve up stream of the NRV? (drain valve, NRV, block valve).
Thanks in advance.





RE: Pipe discharge configuration
Think about it.
RE: Pipe discharge configuration
A The first thing you put downstream of a check valve is a drain (unless the pipe slopes down- that minimises the dead section you can't drain otherwise.
RE: Pipe discharge configuration
Roy
RE: Pipe discharge configuration
Thanks for your replies.
I was thinking that the dead end section can be drained through the pump casing by way of a bypass line around the NRV.