{"product_id":"grundfos-dde-120-7-ar-control-digital-dosing-pump-chemical-dosing","title":"Grundfos DDE 120-7 PVC AR Control Digital Dosing Pump for Chemical Dosing","description":"\u003cp\u003eProcess water disinfection requiring automated signal feedback calls for the precise speed control of the DDE XL series. This configuration is optimised for automated site infrastructure where the pump must interact with external water meters and PLC systems via digital relay and analog signals for sustained accuracy.\u003c\/p\u003e \u003cp\u003eThe unit is powered by a 62 W single-phase motor drawing power from a standard 240v supply. It delivers a maximum dosing capacity of 120.0 L\/h at a 7 bar maximum operating pressure, utilising an 800:1 turn-down ratio to scale performance accurately down to a minimum flow of 0.15 L\/h to match available demand.\u003c\/p\u003e \u003cp\u003eThe hydraulic design utilises advanced stepper motor technology to provide smooth and continuous dosing. This AR control variant includes pulse input, 4-20mA control, and two potential-free output relays, ensuring the unit can be fully synchronised with complex site process automation.\u003c\/p\u003e \u003cp\u003eStructural durability is ensured by a rugged PVC pump head and durable PTFE gaskets paired with ceramic ball valves. Connectivity is managed via manual adjustment or digital signals, and the unit includes a front-mounted scale knob. Housed in an IP65 enclosure, it handles liquid temperatures up to 40°C and includes U3 connection packs.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAR control variant with manual, pulse and 4-20mA input modes and potential-free alarm relays.\u003c\/li\u003e \u003cli\u003eLow-level and tank empty signal inputs for dry-run protection.\u003c\/li\u003e \u003cli\u003e800:1 turn-down range from 120.0 L\/h down to 0.15 L\/h for precise dosing.\u003c\/li\u003e \u003cli\u003eStepper motor technology provides smooth and continuous dosing.\u003c\/li\u003e \u003cli\u003ePVC pump head, PTFE gaskets and ceramic ball valves for standard chemical resistance.\u003c\/li\u003e \u003cli\u003eFront-mounted scale knob for manual adjustment alongside digital control.\u003c\/li\u003e \u003cli\u003eIP65 rated enclosure for robust protection in industrial installations.\u003c\/li\u003e \u003cli\u003eU3 connection packs for easy installation with standard pipe systems.\u003c\/li\u003e \u003c\/ul\u003e","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":50974842257655,"sku":"99246473","price":7466.53,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/grundfos-dde-120-7-ar-control-digital-dosing-pump-chemical-dosing.png?v=1785153978","url":"https:\/\/foundationpumps.com.au\/products\/grundfos-dde-120-7-ar-control-digital-dosing-pump-chemical-dosing","provider":"Foundation Pumps","version":"1.0","type":"link"}