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SKU: 92915382
Grundfos DDA 120-7 PVC Spring-Loaded Valve Digital Dosing Pump for Degassing Liquid Dosing with AR Control
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Reliable chemical injection in standard industrial water systems requiring high-volume throughput calls for the specialised valve configuration of this XL series unit. This system is intended for applications where the requirement for up to 120 litres per hour is balanced with spring-loaded valves for improved priming and handling of non-aggressive chemicals.
Driven by a 62 W single-phase motor drawing power from a standard 240v supply, the unit delivers a maximum dosing capacity of 120.0 L/h at a 7 bar maximum pressure. It achieves an 800:1 turn-down ratio, providing the hydraulic strength required to manage large-scale chemical injection while maintaining precise digital control.
The hydraulic design utilises advanced stepper motor technology to produce smooth and continuous dosing that handles slightly viscous liquids effectively. 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 networks.
Structural durability is ensured by a rugged PVC pump head and EPDM gaskets paired with ceramic ball valves suitable for standard industrial liquids. The unit handles liquid temperatures up to 40°C and is housed in a robust IP65 enclosure.
FEATURES
- Spring-loaded valve design for improved priming and handling of viscous liquids.
- AR control variant with manual, pulse and analog 0/4-20mA modes and potential-free alarm relays.
- 800:1 turn-down range from 120.0 L/h down to 0.15 L/h for precise adjustment.
- Stepper motor technology provides smooth and continuous dosing.
- PVC pump head, EPDM gaskets and ceramic ball valves for standard chemical resistance.
- IP65 rated enclosure for durability in dusty or moisture-prone environments.
- Two potential-free output relays for integration with external control systems or alarm signalling.
SPECIFICATIONS
| Max Flow | 2 L/Min |
| Max Head | 70 m |
| Power | 0.062 kW / 240v |
| Suitable For | Degassing Liquid Dosing |
| Body Material | PVC |
| Liquid Temperature | Maximum 40°C |
| Inlet Size | 19, 20, 25, 27 mm |
| Outlet Size | 19, 20, 25, 27 mm |
| Warranty | 24 Months |
Warranty & Returns
All products supplied by Foundation Pumps are covered by a minimum 12-month warranty unless otherwise stated. Some brands may offer longer manufacturer warranties. Warranty covers manufacturing defects, faulty materials and workmanship under normal use.
- Products must be installed correctly and in accordance with the manufacturer’s instructions.
- Warranty does not cover incorrect installation, misuse, dry running, normal wear and tear, unauthorised repairs or damage caused by external factors.
- Proof of purchase, photos, videos and installation details may be requested when assessing a warranty claim.
- The customer is responsible for returning the product to Foundation Pumps or the nominated service centre unless otherwise agreed.
- Removal, reinstallation, labour and associated site costs are generally the customer’s responsibility unless required under Australian Consumer Law.
- Change-of-mind returns may be accepted within 30 days provided the product is unused, uninstalled and returned in its original packaging.
- Customers are responsible for return freight costs for change-of-mind returns.
- Restocking fees may apply to special-order, bulky or non-stocked products.
- Used, installed or specially ordered products may not be eligible for change-of-mind returns.
- If a product arrives damaged or faulty, please contact Foundation Pumps as soon as possible so we can assist with the appropriate repair, replacement or refund.
Your rights under Australian Consumer Law are not affected.
How much motor kilowatt power and what electrical voltage feed run this chemical metering drive?
Energy delivery to the DDA 120-7 is managed by an electric motor rated at 0.062 kW (62 W) operating on 240 V.
What operating pressure in bar and maximum liquid temperature govern chemical dosing operations?
Operating boundaries for the Grundfos DDA 120-7 allow working pressures up to 7 bar while managing chemical fluids up to 40 °C.
Under peak operation, what dynamic head and fluid lift elevation does this pump develop?
Vertical delivery capability on the DDA-120-7 produces a maximum dynamic head of approximately 70.0 m.
How much chemical flow volume in liters per minute can be delivered through the discharge port?
Discharging into pressurized process loops, the Grundfos DDA 120 7 attains a peak delivery flow volume of approximately 2.0 L/Min (120.0 L/h) via 19, 20, 25, 27 mm ports.
How does the polymer wetted material selection resist industrial chemical attack during dosing?
Transporting aggressive process reagents, the DDA 120-7 AR-PVCEC-F-32U3U3I leverages PVC wetted assemblies capable of resisting corrosive fluids.
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