VS4 type pump
VS4 type pump
(OP)
When we are buying a VS4 type pump where the discharge pipe is separate and we specify a discharge pressure requirement, does the vendor consider that requirement at end of the discharge pipe flange (top of the baseplate) or at the interface flange between casing and the discharge pipe?





RE: VS4 type pump
It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)
RE: VS4 type pump
RE: VS4 type pump
I think the vast majority will specify the pressure at the outlet discharge flange on the base plate based on your supplied min inlet head and SG of the fluid. but check, don't assume unless the difference is relatively negligible (4m in 400 won't make any difference, but 4 in 20 would)
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: VS4 type pump
It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)
RE: VS4 type pump
RE: VS4 type pump
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: VS4 type pump
You are just complicating a very simple requirement.
Simply spec. -- "Head required at the pump mounting plate flange is to be 15m." simple, uncomplicated and fully understood by everyone.
This means you are responsible for the differential head of - sump level to discharge point including the friction loss in your pipework - the vendor has no control of this so entirely your responsibility.
It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)
RE: VS4 type pump
RE: VS4 type pump
It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)