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SKU: 99206038
Grundfos DMX 321-6 Aluminium FKM 3-Phase Dosing Pump for Swimming Pool with Mechanical Diaphragm
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Suitable for wastewater treatment applications requiring higher flow rates, the DMX 321-6 mechanical diaphragm dosing pump provides chemical metering with manual stroke length adjustment from 10-100% giving a 10:1 turndown ratio.
The DMX 321-6 provides 321 L/h maximum dosing capacity at 6 bar pressure, operating at 50 Hz with a 0.40 kW motor on 3 x 415v supply. Dosing flow variation is maintained at less than ±1.5% with linearity within ±4% at minimum 1 bar differential pressure. Suction lift during operation is 2 metres.
Thermoplastic dosing head on the DMX 321-6 with ceramic valve balls and FKM gaskets incorporates standard non-return valves. The PTFE-coated diaphragm handles liquid temperatures from 0 to 40°C.
Aluminium gear housing with IP65 enclosure protects the DMX 321-6. G5/4 connections support 19/27 and 20/25 mm connections.
FEATURES
- Adjustable stroke length from 10-100% of maximum
- 0.40 kW motor for increased dosing capacity
- FKM gaskets for wastewater chemical compatibility
- Standard non-return valves on suction and discharge
- PTFE-coated diaphragm for extended service
- IP65 enclosure for treatment environment protection
- G5/4 connections for 19/27 and 20/25 mm tubing
SPECIFICATIONS
| Max Flow | 5.35 L/Min |
| Max Head | 61.2 m |
| Power | 0.4 kW / 415v |
| Suitable For | Process Water Treatment |
| Body Material | PVC |
| Liquid Temperature | Maximum 40°C |
| Inlet Size | Hose Connection (19/27 mm) |
| Outlet Size | Hose Connection (19/27 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.
What working pressure in bar and liquid temperature limit are certified for this dosing pump?
Chemical dosing parameters certify that the DMX 321-6 operates reliably at pressures up to 6 bar in temperatures up to 40°C.
How much dynamic head lift can this industrial chemical injection unit provide?
Dynamic head performance certified for the Grundfos DMX 321-6 reaches a maximum elevation rating of approximately 61.2 m.
What maximum delivery flow rate and outlet connection sizing are engineered into this pump?
Dispensing fluid accurately into treatment streams, the DMX-321-6 produces a maximum delivery flow volume of approximately 5.35 L/Min (321.0 L/h) through G5/4.
How do the internal wetted material and diaphragm construction resist harsh chemical attack?
Fluid containment and chemical defense on the Grundfos DMX 321 6 are secured by aluminium and PVC with FKM wetted elements supporting demanding industrial duty.
What electrical supply voltage and motor kilowatt power run this high throughput dosing unit?
Power requirements for the DMX_321_6 demand 415 V to drive an electric motor rated at 0.4 kW (400 W).
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