{"product_id":"grundfos-dda-30-4-ar-control-digital-dosing-pump-chemical-dosing","title":"Grundfos DDA 30-4 PVDF AR Control Digital Dosing Pump for Chemical Dosing","description":"\u003cp\u003eMaximum capacity within the standard DDA range for higher-volume chemical injection and industrial transfer duties. This system is intended for process users who require the maximum hydraulic capacity of the DDA series while maintaining precise signal control and alarm feedback.\u003c\/p\u003e \u003cp\u003eDriven by a 24 W single-phase motor, the unit produces a maximum dosing capacity of 30.0 L\/h at a 4 bar maximum pressure. It utilises a 1000:1 turn-down ratio, allowing the operator to adjust the output via the graphical LC display menu for precise control from the peak flow down to a minimum of 30.0 ml\/h.\u003c\/p\u003e \u003cp\u003eThe hydraulic assembly features stepper motor technology and full stroke operation, providing smooth and continuous dosing. The AR control functionality includes manual speed adjustment and ml\/pulse control, ensuring consistent volumetric accuracy is maintained even as system backpressure varies.\u003c\/p\u003e \u003cp\u003eMechanical integrity is provided by a PVDF dosing head and durable PTFE gaskets paired with ceramic ball valves. Housed in an IP65 enclosure, it handles liquid temperatures to 45°C and includes two potential-free output relays for alarm signalling 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, ml\/pulse control and potential-free relay outputs.\u003c\/li\u003e \u003cli\u003eLow-level and empty-tank signal inputs for dry-run protection.\u003c\/li\u003e \u003cli\u003e1000:1 turn-down range from 30.0 L\/h down to 30.0 ml\/h for precise control.\u003c\/li\u003e \u003cli\u003eStepper motor technology provides smooth and continuous dosing with full stroke operation.\u003c\/li\u003e \u003cli\u003ePVDF pump head, PTFE gaskets and ceramic ball valves for aggressive chemical resistance.\u003c\/li\u003e \u003cli\u003eGraphical LC display for on-site configuration and operating data.\u003c\/li\u003e \u003cli\u003eTwo potential-free output relays for alarm signalling or integration with external control systems.\u003c\/li\u003e \u003cli\u003eIP65 rated enclosure protects internal components in industrial conditions.\u003c\/li\u003e \u003c\/ul\u003e","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":50974841405687,"sku":"93243023","price":4315.85,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/grundfos-dda-30-4-ar-control-digital-dosing-pump-chemical-dosing.png?v=1785153932","url":"https:\/\/foundationpumps.com.au\/products\/grundfos-dda-30-4-ar-control-digital-dosing-pump-chemical-dosing","provider":"Foundation Pumps","version":"1.0","type":"link"}