{"product_id":"grundfos-dda-30-4-spring-loaded-valve-digital-dosing-pump-degassing-liquid-dosing","title":"Grundfos DDA 30-4 PVC Spring-Loaded Valve Digital Dosing Pump for Degassing Liquid Dosing with AR Control","description":"\u003cp\u003eHandling degassing or viscous media in industrial process cycles requires a configuration built with enhanced valve performance. This Smart Digital S system is engineered with spring-loaded valves to ensure consistent priming and throughput in applications where standard gravity-closed valves may struggle to maintain accuracy.\u003c\/p\u003e \u003cp\u003eDriven by a 24 W motor, the unit delivers a maximum dosing capacity of 30.0 L\/h at a 4 bar maximum operating pressure. It utilises a 1000:1 turn-down ratio, allowing the operator to adjust the output from its peak capacity down to 30.0 ml\/h, ensuring the hydraulic power of the DDA series is matched with precise volumetric control.\u003c\/p\u003e \u003cp\u003eThe hydraulic design utilises advanced stepper motor technology to provide smooth and continuous dosing. The AR control variant includes pulse input, analog 0\/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 PVC dosing head and EPDM gaskets paired with ceramic ball valves. Housed in an IP65 enclosure, it handles liquid temperatures to 45°C, is protected against thermal overload by internal electronics, 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 optimised performance with viscous or degassing media.\u003c\/li\u003e \u003cli\u003eAR control variant supports manual, pulse and analog 0\/4-20mA operation with potential-free alarm relays.\u003c\/li\u003e \u003cli\u003e1000:1 turn-down range from 30.0 L\/h down to 30.0 ml\/h for precise adjustment.\u003c\/li\u003e \u003cli\u003eStepper motor drive technology provides smooth and continuous dosing.\u003c\/li\u003e \u003cli\u003ePVC dosing head and EPDM gaskets for reliable resistance with non-aggressive chemicals.\u003c\/li\u003e \u003cli\u003eInternal thermal overload protection for enhanced motor reliability.\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 from water spray.\u003c\/li\u003e \u003c\/ul\u003e","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":50974841471223,"sku":"93242999","price":3938.61,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/grundfos-dda-30-4-spring-loaded-valve-digital-dosing-pump-degassing-liquid-dosing.png?v=1785153936","url":"https:\/\/foundationpumps.com.au\/products\/grundfos-dda-30-4-spring-loaded-valve-digital-dosing-pump-degassing-liquid-dosing","provider":"Foundation Pumps","version":"1.0","type":"link"}