S. W. HOOPER (SWH)

Is a manufacturer of rotary design paper pulp pumping systems. SWH’s pumps use a 316 stainless steel, fin-rotor design: the operating fins provide the pumping action. SWH purchased a VSR Vibratory Stress Relief System for these rotors and other workpieces in 1990, and since then predictability during and after machining has improved dramatically.

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