{"product_id":"grundfos-dda-200-4-spring-loaded-valve-digital-dosing-pump-water-treatment","title":"Grundfos DDA 200-4 PVC Spring-Loaded Valve Digital Dosing Pump for Water Treatment with AR Control","description":"\u003cp\u003eIndustrial reticulation requiring high throughput with enhanced valve behaviour defines the role of this specialist configuration. This Smart Digital XL system is engineered with spring-loaded valves to ensure consistent priming and throughput for high-volume dosing tasks where gravity valves may be insufficient.\u003c\/p\u003e \u003cp\u003ePowered by a 62 W motor, the pump achieves a peak flow rate of 200.0 L\/h against a 4 bar maximum operating pressure. It utilises an 800:1 turn-down ratio, which provides consistent volumetric accuracy across a broad range of settings down to a minimum of 0.25 L\/h, supporting accurate dosing across the operating range.\u003c\/p\u003e \u003cp\u003eThe hydraulic assembly features stepper motor technology for smooth and continuous dosing. The unit includes AR control functionality for manual speed, pulse, and analog operation, ensuring that high-volume chemical delivery is matched with precise digital control.\u003c\/p\u003e \u003cp\u003eMechanical integrity is provided by a PVC dosing head and EPDM gaskets paired with ceramic ball valves suitable for standard media. Housed in an IP65 enclosure, it handles liquid temperatures up to 40°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\u003eSpring-loaded valve configuration for consistent priming with viscous or degassing media.\u003c\/li\u003e \u003cli\u003eAR control variant with manual speed, pulse and analog 0\/4-20mA input modes.\u003c\/li\u003e \u003cli\u003e800:1 turn-down ratio from 200.0 L\/h down to 0.25 L\/h for precise flow control.\u003c\/li\u003e \u003cli\u003eStepper motor drive provides smooth and continuous dosing.\u003c\/li\u003e \u003cli\u003ePVC pump head, EPDM gaskets and ceramic ball valves for standard chemical resistance.\u003c\/li\u003e \u003cli\u003eIP65 rated enclosure protects motor and electronics in industrial installations.\u003c\/li\u003e \u003cli\u003eHigh-capacity dosing suitable for bulk industrial transfer requirements.\u003c\/li\u003e \u003cli\u003eTwo potential-free output relays for alarm signalling or integration with external control systems.\u003c\/li\u003e \u003c\/ul\u003e","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":50974842028279,"sku":"92915383","price":9208.54,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/grundfos-dda-200-4-spring-loaded-valve-digital-dosing-pump-water-treatment.png?v=1785153967","url":"https:\/\/foundationpumps.com.au\/products\/grundfos-dda-200-4-spring-loaded-valve-digital-dosing-pump-water-treatment","provider":"Foundation Pumps","version":"1.0","type":"link"}