The use of stainless steel is a choice that ensures high performance and quality, even when it comes to the hydraulics of electric pumps.
By producing pumps’ bodies, impellers, and other components with stainless steel, we are able to effectively interpret market demands each time by offering specific solutions for a variety of needs.
It is well known that stainless steel is a valuable material that has significant advantages in various applications.
Its performance related to corrosion resistance, its hygiene, and also its sustainability (steel is a 100% recyclable material ) make it very strategic.
The corrosion resistance of stainless steel, in particular, stems from a phenomenon called “self passivation”, that is the ability to recreate independently, on its own surface, a protective layer makes the metal immune to the aggression of external agents. This, in turn, is made possible by the presence of between 10 percent and 20 percent chromium in the alloy.
Peripheral pump with stainless steel hydraulics: reliability and durability in harsh environments
CT peripheral pumps are compact pumps with motor housing and pump-side wall in one piece. Their small size is excellently suited for installation in cooling, air conditioning and circulation machines and equipment.
Recently, one of our customers operating in Southeast Asia asked us for a supply of electric pumps to be used within a medium-sized cooling plant.
Chillers are units that require careful design and particularly reliable components to ensure the right temperature in industrial processes.
CT peripheral pumps are usually produced with cast iron or bronze pump bodies and brass impellers. In this case, however, the demand was for a pump that could operate and ensure excellent performance in an environment characterized by high temperatures and high humidity. The harsh climatic environment, therefore, prompted us to opt for a CTM 61 with a microcast stainless steel pump body.
The stainless steel used is AISI 316L steel, which is particularly suitable for this use because it combines good formability with excellent corrosion resistance.
The use of microcast steel has thus enabled us to expand the range of our peripheral pumps with a new version that can meet the specific needs of our customers.
Normalized centrifugal pumps with stainless steel impeller
We have an ongoing project to include AISI 316 microcast steel impellers also for our NM(4), NMS(4), N(4) and NR(4) series normalized centrifugal pumps.
The following sizes are already available:
- NM 32/12, NMS 32/125, N(4) 32-125
- NM 40/12, NMS 40/125, N 40-125
- NM(4) 40/16, NMS(4) 40/160, N(4) 40-160
- NM 50/12, NMS 50/125, N(4) 50-125
- NM(4) 50/16, NMS(4) 50/160, N(4) 50-160
- NR 40/125
- NR 50/125
- NR(4) 50/160
- NR(4) 65/125
- NR(4) 65/160
The extension of this construction specialty to larger sizes has also already been planned for the coming months.
The goal, again, is to respond prompltly to market needs. Normalized centrifugal pumps with AISI 316 steel impeller are well suited for industrial applications where high resistance is required, for example, in large refrigeration systems, but also in fire-fighting systems.
In this regard, it should be mentioned that the fire-fighting standard EN 12259-12 requires impellers to be made in both bronze and stainless steel versions. However, it is often the market that demands pumps with stainless steel impellers for fire-fighting systems because of their reliability and performance.
Microcast steel impellers: all the advantages
Stainless steel impellers are made by a microcasting process and machined with state-of-the-art technologies that ensure maximum precision, even in the case of complex geometries and specific configurations.
Stainless steel castings have high mechanical strength, which preserves them from wear, deformation and failure. They are characterized by excellent performance even at high temperature, which is why they work very well in industrial processes. Finally, they achieve interesting results in hydraulic efficiency. Steel castings, in fact, make it possible to obtain impellers with smooth and precise interpalar channels, thus containing pressure drops and energy consumption.
