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SKU: 99206063
Grundfos DMX 321-6 Aluminium FKM 1-Phase Dosing Pump for Boiler Feed with Mechanical Diaphragm
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Process water treatment applications requiring higher flow rates are suitable for the DMX 321-6 mechanical diaphragm dosing pump from Grundfos. Manual stroke length adjustment from 10-100% provides a 10:1 turndown ratio for dosing rate control.
The DMX 321-6 delivers 321 L/h maximum dosing capacity at 6 bar pressure, operating at 50 Hz with a 0.40 kW motor on 1 x 240v 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
- Stroke length adjustment from 10-100% of maximum
- 0.40 kW motor for increased dosing capacity
- FKM gasket material for chemical resistance
- Standard non-return valves on suction and discharge
- PTFE-coated diaphragm for treatment chemicals
- IP65 enclosure rating for installation flexibility
- 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 / 240v |
| Suitable For | Chemical Dosing |
| 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 three-phase electrical supply voltage and motor kilowatt power drive this dosing assembly?
Rated electrical drive performance on the DMX 321-6 is delivered by a 0.4 kW (400 W) motor functioning on 240 V.
What maximum operating pressure in bar and process fluid temperature apply to this unit?
System pressure thresholds for the Grundfos DMX 321-6 support working pressures up to 6 bar with fluid temperatures up to 40°C.
What maximum dynamic head and upward fluid elevation does this industrial dosing unit sustain?
Driving chemical solutions upward into distribution headers, the DMX-321-6 attains a maximum dynamic head of approximately 61.2 m.
How much chemical flow volume in liters per minute can be discharged by this dosing unit?
Metering reagents into distribution lines, the Grundfos DMX 321 6 maintains a peak delivery flow rate of approximately 5.35 L/Min (321.0 L/h) across G5/4.
What specialized alloy and wetted elastomer material construction ensure protection against corrosion?
Constructed to resist abrasive chemical solutions, the DMX_321_6 features aluminium and PVC with FKM wetted materials and advanced seal engineering.
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