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A pumping arrangement for a paint circulation system comprising a reciprocating pump (13), and characterized by an alternating current induction motor (15), a rotary-to-linear motion converter (16) coupling the output of the induction motor (15) to a drive input of the pump (13), an alternating curr

A pumping arrangement for a paint circulation system comprising a reciprocating pump (13), and characterized by an alternating current induction motor (15), a rotary-to-linear motion converter (16) coupling the output of the induction motor (15) to a drive input of the pump (13), an alternating current frequency inverter (24a) controlling said induction motor, switch means (26) for reversing rotation of the induction motor (15) at the ends of the stroke of the reciprocating pump (13), and, a surge eliminator (28) communicating with the output side of said pump (13) to augment the pressure in the circulation system during stroke reversal of the pump.

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The invention claimed is: 1. A pumping arrangement for a paint circulation system comprising: a reciprocating pump and an alternating current induction motor, a rotary-to-linear motion converter coupling an output of the induction motor to a drive input of the pump, an alternating current frequency

The invention claimed is: 1. A pumping arrangement for a paint circulation system comprising: a reciprocating pump and an alternating current induction motor, a rotary-to-linear motion converter coupling an output of the induction motor to a drive input of the pump, an alternating current frequency inverter controlling said induction motor, a switch for reversing rotation of the induction motor at the ends of the stroke of the reciprocating pump, and, a surge eliminator communicating with the output side of said pump to augment the pressure in the circulation system during stroke reversal of the pump. 2. A pumping arrangement as claimed in claim 1 wherein said surge eliminator is an active surge eliminator. 3. A pumping arrangement as claimed in claim 1 wherein a volume of a gas chamber of the surge eliminator is augmented by an additional pressure chamber connected thereto. 4. A pumping arrangement as claimed in claim 1 wherein safety switch contacts are associated with said stroke reversal switch contacts so as to be actuated in the event that the pump stroke exceeds a predetermined stroke reversal point. 5. A pumping arrangement as claimed in claim 1 further comprising a pressure transducer monitoring the pump output pressure. 6. A pumping arrangement as claimed in claim 1 wherein said pump is a double acting pump in which both forward and return strokes are pumping strokes. 7. A pumping arrangement as claimed in claim 1 further comprising a reduction gear box, interposed between the motor and the converter.