Horisontal vs vertical in-line ANSI Pump
Horisontal vs vertical in-line ANSI Pump
(OP)
Please advise for the following:
1. what subject I must consider before I make a decision to choose horisontal type or vertical in-line centrifugal ANSI pump for certain application.
2. Is it true that vertical pump is best for low flow and high head application?
Thank you.
1. what subject I must consider before I make a decision to choose horisontal type or vertical in-line centrifugal ANSI pump for certain application.
2. Is it true that vertical pump is best for low flow and high head application?
Thank you.





RE: Horisontal vs vertical in-line ANSI Pump
Clear as mud now?
Tim
RE: Horisontal vs vertical in-line ANSI Pump
If its not already obvious, I don't like vertical pumps. From a reliability standpoint, assuming all 3 are installed properly, my preferences would be, in descending order:
1.) Horizontal ANSI
2.) Vertical ANSI w/bearings and flex. coupling
3.) Vertical ANSI w/o bearings and rigid coupling - NOT RECOMMENDED
RE: Horisontal vs vertical in-line ANSI Pump
Butelija is right..... because of maintenance preferences and thepreference for a "good robust installation" the horizontal ANSI B73.1 pumps outsell the vertical by at least 5 to 1.
Don't forget, if the vertical ANSI pump is not properly supported (and many are not) it turns into a maintenance headache. Vibration problems can be transmitted through the attched piping. I have seen vertical ANSI pumps supported only by the conneected piping. Horizontal, baseplate mounteded pumps win hands down.
I have only seen ANSI verticals used where there is a space problem or where the fluid has a high vapor pressure. I have also seen themapplied where a small "booster" pump is needed for more head. Because of the competitive price and the availabilty of parts, many process chemical companies have a policy that says "use ANSI B73.1 hrizontal pumps, unless there is a verified, solid reason not to..."
Anyone else out there in cyberspace have musings or opinions on this ??
DEAN pump is one vendor that I can think of
Cheers....
MJC
RE: Horisontal vs vertical in-line ANSI Pump
I think the posts above cover your first question pretty well. As to your question regarding high head/low flow pumps I imagine that someone familiar with Sundyne pumps has started that rumour. They are excellent pumps in their place but they don't have much in common with an ANSI B73.2 pump.
Regards,
Gunnar
RE: Horisontal vs vertical in-line ANSI Pump