The Grundfos DDA 17-7 Smart Digital dosing pump (type key DDA 17-7 FCM-PVC/V/C-F-31U7U7BG, part number 97722642) 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 FCM includes the patented FlowControl system with integrated flow measurement and pressure monitoring on every stroke, enabling automatic fault detection (air lock, blocked discharge, leaking valves) and true dosed-volume verification.
Specifications
| Part Number | 97722642 |
|---|---|
| Type Key | DDA 17-7 FCM-PVC/V/C-F-31U7U7BG |
| Maximum Flow | 4.49 GPH (17 l/h) |
| Maximum Pressure | 102 psi (7 bar) |
| Connections | Tubing 1/4" x 3/8" and 3/8" x 1/2" union connections |
| Dosing Head | PVC (Polyvinyl Chloride) |
| Gasket Material | FKM (Viton) |
| Valve Balls | Ceramic |
| Power Supply | 100-240 V, 50/60 Hz, single phase |
| UPC |
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.
