The Models 3657 (close-coupled) and 3757 (frame-mounted) are single-stage end-suction pumps designed for ultra-pure water systems, O.E.M. applications, food and beverage processing and chemical services not demanding ANSI standard equipment.
The pumps have fully enclosed, investment cast, AISI TYPE 316 stainless steel impellers, key driven and held in position by an o-ring sealed locknut. The full volute casings are also investment castings of AISI TYPE 316 stainless steel, back pull-out configuration, with connections for mating with standard 150 lb. ANSI flanges. Shafts are protected with o-ring sealed stainless steel sleeves. Shaft sealing is with mechanical seal.