{"product_id":"grundfos-dda-17-7-ar-control-digital-dosing-pump-process-chemical-dosing","title":"Grundfos DDA 17-7 PVDF AR Control Digital Dosing Pump for Process Chemical Dosing","description":"\u003cp\u003eHigher throughput industrial dosing for process water treatment requiring precise chemical delivery from restrictive sources calls for the precise speed control of the DDA series. This configuration is optimised for automated environments where the pump must interact with external water meters and PLC systems via digital relay and analog signals.\u003c\/p\u003e \u003cp\u003ePowered by a 24 W motor operating on 240v, the unit delivers a maximum dosing capacity of 17.0 L\/h at a 7 bar maximum operating pressure. It achieves a 1000:1 turn-down ratio, which provides the wide dosing range needed to manage dosing rates from its peak flow down to a precise minimum of 17.0 ml\/h.\u003c\/p\u003e \u003cp\u003eThe hydraulic design utilises advanced stepper motor technology to provide smooth and continuous dosing. The unit includes AR control functionality for manual, pulse, and analog modes, ensuring consistent performance with diverse installation requirements.\u003c\/p\u003e \u003cp\u003eStructural durability is ensured by a rugged PVDF body, PTFE gaskets, and ceramic ball valves suitable for aggressive industrial fluids. The unit handles liquid temperatures up to 45°C and includes two potential-free output relays for alarms or integration with external control systems.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAR control variant with manual speed adjustment, pulse-based operation and analog 0\/4-20mA control.\u003c\/li\u003e \u003cli\u003eLow-level and empty-tank signal inputs protect the pump from dry-run damage.\u003c\/li\u003e \u003cli\u003e1000:1 turn-down ratio for precise adjustment from 17.0 L\/h down to 17.0 ml\/h.\u003c\/li\u003e \u003cli\u003eStepper motor technology provides smooth and continuous dosing.\u003c\/li\u003e \u003cli\u003ePVDF dosing head, PTFE gaskets and ceramic ball valves for aggressive fluid resistance.\u003c\/li\u003e \u003cli\u003eBatch and timer operating modes for flexible site process automation.\u003c\/li\u003e \u003cli\u003eTwo potential-free output relays for alarms or integration with external control systems.\u003c\/li\u003e \u003cli\u003eIP65 rated enclosure protects internal components in industrial environments.\u003c\/li\u003e \u003c\/ul\u003e","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":50974841340151,"sku":"93242969","price":3975.18,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/grundfos-dda-17-7-ar-control-digital-dosing-pump-process-chemical-dosing.png?v=1785153930","url":"https:\/\/foundationpumps.com.au\/products\/grundfos-dda-17-7-ar-control-digital-dosing-pump-process-chemical-dosing","provider":"Foundation Pumps","version":"1.0","type":"link"}