BigInch,
Thanks for your quick reply.
I understand that 5% head increase is for case that someone miscalculates the head so we have enough space to install the larger diameter impeller to get the required head.
But in this case, if that provision (not exceed 95% of max impeller) is also...
Hello,
In API 610 9th edition article 5.1.6 states that :
"Pumps shall be capable of at least a 5% head increase at rated conditions by replacement of the
impeller(s) with one(s) of larger diameter ..."
And I've seen some project specification (for seawater pump service) which is modified...
