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Where compact stainless steel pumps are required the Calpeda NMX 25/70B, a close-coupled centrifugal pump developed for utility circulation and rinse transfer. The hydraulic assembly is manufactured in AISI 304 stainless steel, allowing the unit to operate reliably with clean liquids that are non-aggressive toward stainless steel materials. Its compact direct-coupled construction helps reduce installation space while supporting integration into civil, industrial, irrigation, utility, and process support systems where stable circulation performance is required.
Hydraulic performance reaches up to 18.1 m maximum head with flow rates extending to 5.4 m³/h. The pump is driven by a three-phase 400V induction motor rated at 0.55 kW with operating current of 1.7 A. Operating speed is approximately 2900 rpm through a two-pole motor configuration, supporting smooth pressure generation and balanced flow transfer across continuous-duty operating conditions. Threaded suction and discharge ports in ISO 228/1 configuration simplify connection into service pipelines and utility circulation assemblies.
Flow stability is supported through a closed impeller arrangement engineered for controlled hydraulic transfer with non-abrasive liquids. The impeller, casing, shaft, and casing cover are produced in AISI 304 stainless steel, contributing to corrosion resistance and long-term hydraulic consistency in clean water systems. The close-coupled arrangement minimizes alignment requirements between the motor and hydraulic section, while the threaded connection design simplifies maintenance and replacement procedures in confined installation environments.
Mechanical sealing is achieved using ceramic alumina and carbon seal faces combined with EPDM elastomer components. The pump is suitable for liquid temperatures ranging from -10°C to +90°C with maximum permissible working pressure up to 10 bar. Class F motor insulation and IP54 protection support dependable operation in industrial utility environments, and the motor construction complies with continuous-duty operation requirements. Inlet connection size is G 1 1/4 while the outlet connection is G 1, supporting compatibility with standard utility pipework installations.
FEATURES- Close-coupled centrifugal pump construction reducing installation footprint
- Closed impeller hydraulic design for balanced pressure generation
- AISI 304 stainless steel casing, shaft, impeller, and casing cover
- ISO 228/1 threaded suction and discharge connection configuration
- Ceramic alumina and carbon mechanical seal face combination
- EPDM elastomer support components for sealing stability
- Two-pole induction motor operating near 2900 rpm
- Class F motor insulation with IP54 enclosure protection
FAQs
General Product FAQs
1. How do I choose the right pump for my setup?
Selecting the correct pump depends on your required flow (L/min), total head (vertical lift + friction loss), and power source. If you're unsure, contact our team and we’ll size the right system for you.
2. Do you offer support with system design or setup?
Yes — we provide expert advice to help you choose, install, and optimise your pump system. Whether it's a simple setup or a custom solution, we’re here to help.
3. Do you offer complete pump solutions or just products?
We don’t just sell pumps — we provide complete solutions. From accessories and control systems to full packaged setups, we can supply everything required to get your system running efficiently.
Shipping & Availability
1. Do you offer Australia-wide shipping?
Yes — we ship across Australia. Bulk or oversized orders may incur additional freight charges otherwise we offer free shipping over $100*
2. How long does delivery take?
Orders are typically shipped within 1–2 business days, with delivery taking approximately 2–7 days depending on your location.
3. What courier or freight companies do you use?
We work with a range of trusted carriers including Australia Post, StarTrack, TNT, and other national freight providers depending on the size and location of your order. This allows us to ensure fast, reliable delivery across Australia, including regional and remote areas.
Warranty & Support
1. Do your pumps come with a warranty?
Yes — all products are backed by manufacturer warranties. Warranty periods vary depending on the brand and product type.
2. What support do you offer after purchase?
We provide ongoing support including:
- Installation advice
- Troubleshooting
- Spare parts supply
- System upgrades
3. What is the warranty process if something goes wrong?
If you experience an issue, simply contact our team with your order details and a description of the problem. We’ll guide you through troubleshooting and, if required, arrange repair, replacement, or manufacturer assessment in line with warranty terms.
Why choose Foundation Pumps?
1. Why choose Foundation Pumps over other suppliers?
We focus on supplying proven, high-quality pump solutions backed by real industry knowledge. Unlike general resellers, we understand how these systems perform in the field and provide honest, practical advice to ensure you get the right solution the first time.
2. Do you offer expert advice before and after purchase?
Yes — we support you at every stage, from selecting the right pump through to installation and ongoing use. Our team is available to assist with sizing, troubleshooting, and system optimisation whenever you need it.
3. Do you stock trusted brands and quality products?
We carefully select and supply pumps from reputable manufacturers known for reliability and performance. Our range includes both industry-leading brands and high-value alternatives that meet Australian standards and conditions.
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