Q. "What is ANSI?"
A. American National Standards Institute - It is a general standards organization that facilitates the voluntary establishment of standards.
Q. "What are the pump flanges constructed of?"
A. They come in either cast iron or bronze depending on the type of pump housing option you choose. A cast iron pump housing will have cast iron flanges, and a bronze pump housing will have bronze flanges.
Q. "How is the quality of a Grundfos brand pump?"
A. We know of no finer made pump. Having said that we do want you to realize that every pump has a specific function. Every pump also has a specific flow rate, etc. so please don't assume that you can simply order the lowest priced Grundfos pump and that it will work for your situation. Grundfos is top quality but recognize that a $20,000 bicycle might not go as fast as a $15,000 car.
Q. "What do the numbers 1, 2, & 3 on the lines refer to in the performance curve graphs?"
A. The speed of the pump.
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