Internationally recognized OEM supplier of water treatment products. Distributes residential/commercial/industrial water softeners, dealkalizers, filters, RO systems, components and parts. Engineers standard systems and will assemble systems to your specifications. Large inventory of control valves, resin tanks, resin and filter media, brine tanks, UV systems, chemical-feed pumps and filter housings/cartridges. Offers exclusive DynaPro-branded products. Complimentary application engineering and technical assistance is available from our knowledgeable, experienced staff. Contact us for access to our online product catalog.
CUSTOM SOLUTIONS, EXCEPTIONAL SERVICE – At Nelsen Corporation, we are problem-solvers. Family-owned and operated since 1954, we are the OEM water treatment leader. Nelsen offers a large selection of in-stock inventory in our four manufacturing and distribution facilities, allowing most orders to ship same-day. Our focused approach revolves around the unique needs of each customer, servicing professional dealers at the speed your business demands. Nelsen’s exceptional team works tirelessly to customize your equipment to your exact specifications, building solutions for your business.

























































































