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SKU: 3HM21S22M
Lowara 3HM21S22M Stainless Steel Compact Multistage Centrifugal Pump for Process Water with Closed Impeller
Australia-Wide
(08) 9240 2992
Official Lowara
Peace of Mind
Product Overview
The Lowara 3HM21S22M provides efficient and reliable pumping performance. This horizontal multistage centrifugal unit is engineered for demanding industrial and building service environments requiring consistent pressure generation. Its configuration excels in cooling systems and liquid circulation duties where stable flow characteristics are necessary. Designed for direct installation, the pump addresses the requirements of mid-scale hydraulic loops and process water handling where space-efficient footprints and mechanical precision are essential for system integration.
Operation is defined by a high-efficiency motor architecture and a multi-stage hydraulic assembly that generates significant lift. Max Head 154 m and Max Flow 73.3 L/Min. The pump incorporates an AISI 304 stainless steel fluid path to maintain water integrity. Electrical power input is 2.2 kW / 240v, ensuring balanced consumption for its performance output, while 25 mm inlet and 25 mm outlet connections facilitate standard plumbing integration.
The internal architecture utilizes a sequence of stainless steel components optimized for hydraulic stability. By employing a multi-stage configuration, the pump manages fluid energy through successive stages, effectively elevating pressure without the erratic flow fluctuations seen in single-stage designs. This series emphasizes laminar flow management and reduced internal turbulence, contributing to long-term operational consistency during continuous duty cycles.
Constructed with a close-coupled arrangement, the motor and hydraulic end are unified to ensure shaft alignment and structural rigidity. The exterior features a TEFC motor enclosure rated to IP 55, providing protection against external debris and moisture. Safety features include integrated thermal overload protection designed to safeguard the motor during intense demand, while the stainless steel construction offers resistance against common chemical and thermal degradation within diverse water handling circuits.
Features:
- TEFC squirrel-cage motor configuration with F-class thermal insulation
- Precision-engineered AISI 304 stainless steel housing and hydraulic components
- IP55 motor protection index for operation in challenging environments
- Balanced mechanical seal interface compliant with EN 12756 standards
- Integrated automatic reset overload protection for system safety
- Optimized shaft alignment via close-coupled motor flange mounting
SPECIFICATIONS
| Max Flow | 73.3 L/Min |
| Max Head | 154 m |
| Power | 2.2 kW / 240v |
| Rated Current | 10.1 Amps |
| Suitable For | Cooling Systems and Process Water Handling |
| Body Material | AISI 304 Stainless Steel |
| Liquid Temperature | '-10°C to +60°C |
| Inlet Size | 25 mm |
| Outlet Size | 25 mm |
| Warranty | 12 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 electrical power consumption in kilowatt and motor current feed this heavy booster unit?
Powered by a 220–240 V, 50 Hz, single-phase electrical feed, the 3HM21S22M delivers a motor power rating of 2.2 kW (3.0 HP) at an electrical current draw of 10.1 A.
How should this heavy multistage pump be secured on a horizontal base to ensure proper drainage?
Backflow prevention across horizontal pipe runs requires installing an external non-return check valve immediately downstream of the 3HM-21S-22M, which must rest on a horizontal base with drainage.
What maximum vertical elevation head does this heavy multistage booster achieve?
Vertical lift pressure is developed by the 3HM 21S 22M, which maintains a peak dynamic head capability of approximately 157 m across its stages.
What maximum delivery flow rate does this heavy multistage booster provide across piping?
Plumbing connection lines interface with the 3HM_21S_22M via Rp 1" (25 mm) suction and Rp 1" (25 mm) discharge, discharging a maximum delivery flow volume of approximately 73.3 L/Min.
Which stainless alloy grades ensure long-term corrosion resistance in this heavy booster pump?
Corrosion defense across the 3HM21S22M relies on high-grade AISI 304 stainless steel casing alloys and closed stainless impellers with EPDM elastomers to protect against chemical attack.
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