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Armstrong Series 4700 Vertical Multistage pump. The pump shall have continuing rising curve from minimum head to shut off condition and shall have a motor installed that is suitable for the full range of the published performance curve.
All hydraulic components shall be manufactured from type 304 Stainless steel.
Each impeller shall be fitted with a Teflon seal ring.
The 316L Stainless Steel shaft shall be fitted with Tungsten Carbide intermediate bearing(s).