The Grundfos DDA 7.5-16 Smart Digital dosing pump (type key DDA 7.5-16 AR-PP/E/C-F-31U7U7BG, part number 97722357) is a digital diaphragm metering pump with a variable-speed stepper motor drive, delivering smooth, continuous chemical injection with exceptional accuracy across its full adjustment range. The Digital Dosing Advanced (DDA) platform is Grundfos' high-end solution for complex and demanding dosing applications. Control variant AR includes an alarm relay and analog input (0/4-20 mA) for external control and monitoring.
Specifications
| Part Number | 97722357 |
|---|---|
| Type Key | DDA 7.5-16 AR-PP/E/C-F-31U7U7BG |
| Maximum Flow | 1.98 GPH (7.5 l/h) |
| Maximum Pressure | 232 psi (16 bar) |
| Connections | Tubing 1/4" x 3/8" and 3/8" x 1/2" union connections |
| Dosing Head | PP (Polypropylene) |
| Gasket Material | EPDM |
| Valve Balls | Ceramic |
| Power Supply | 100-240 V, 50/60 Hz, single phase |
| UPC | 5710622724998 |
Applications
- Antiscalant and chemical injection for reverse osmosis (RO) systems
- Chlorination and dechlorination (sodium hypochlorite, sodium bisulfite)
- pH adjustment and coagulant/flocculant dosing
- Industrial process water treatment and cooling water treatment
Key Features
- Variable-speed stepper motor for continuous, pulsation-reduced dosing
- High turndown ratio for precise dosing from very low to full capacity
- Intuitive click-wheel interface with bright graphical LCD
- Auto-deaeration and easy priming, even against pressure
- Full-PTFE diaphragm with chemical-resistant liquid end
ForeverPure is an authorized Grundfos partner. Contact us for application sizing assistance, chemical compatibility review, and volume pricing.
