We are a full service facility, ready to meet your needs in sales, service and rentals for the industrial, municipal, mining, construction and commercial markets. Claessen Pumps has always maintained the highest level of Quality and Integrity in the pumping industry. Claessen Pumps Limited has been supplying Grindex submersible industrial pumps exclusively in Ontario since 1976. Claessen Pumps Limited is now the Master Distributor of Pioneer Pump in Ontario. Pioneer Pump is performance through innovation.Leading-edge hydraulic engineering makes our centrifugal pumps the highest performing out there. Better flow. Higher head. Greater efficiency. And unparalleled service designed to meet your unique challenges.