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Self-priming centrifugal and peripheral pumps
Self-priming centrifugal pumps
Etaprime
Self-priming centrifugal pumps are pumps that are capable of drawing in liquid into a pump. It means, before starting the pump must not be filled. Etaprime pumps have a semi-open impeller, therefore they are capable of pumping liquids with small size components successfully as well, e.g. drainage water. As the pump is capable of drawing in liquid into the pump by itself, then a pipeline can be empty during the pump idle time, thus there is no need to be afraid of leaks or, for instance, a pipeline blasting due to freezing in winter.
They are widely used as discharge pumps for tanks and for filling up systems with water
in fire-extinguishing systems.
As materials, gray cast iron, bronze, and acid-resistant steel are used.
Suction lift | p2. max. 9 m |
Capacity (Q) | max. 170 m³/h |
Head (H) | max. 90 m |
Temperature | max. 90ºC |
Pressure rating | PN 10 |
Multistage self-priming pumps
Multi Eco
Multi Eco -series pumps are intended to be used as self-priming pumps to transfer very small flows, mainly for consumption of private people and smaller industrial enterprises.
The pump hydraulics is from wear-resistant plastic (Noryl) as that of deep-well pumps. Therefore, it is possible to pump water with a significantly bigger sand content than by stainless steel pumps with hydraulics.
Suction lift | p2.max. 8 m |
Capacity (Q) | max. 8 m³/h |
Head (H) | max. 54 m |
Temperature | max. 50ºC, temporarily 70ºC (10 min.) |
Pressure rating | PN 6/10 |
AHO, AHN, AHR, AHR-S
AHR
AHR-series pumps are by construction multistage peripheral pumps. They are used in places where multistage centrifugal pumps are appropriate since it is additionally required that the pump is capable of filling up by itself.
They are capable of pumping fluids with very high content of gas, up to 70%.
They are used as vacuum pumps as well.
As materials, gray cast iron, malleable cast iron, bronze, and acid-resistant steel are used.
Suction lift | p2. max. 9 m |
Capacity (Q) | max. 25 m³/h |
Head (H) | max. 360m |
Temperature | max. 250ºC |
Pressure rating | PN 40 |
Multistage self-priming pumps with a magnetic clutch
Norex
Norex-series pumps are similar to AHR-series pumps by construction and properties, a magnetic clutch or the so-called canned motor is added. They are mainly used in chemical industry.
As materials, gray cast steel, malleable cast iron, and acid-resistant steel are used.
Suction lift | p2. max. 9 m |
Capacity (Q) | max. 26 m³/h |
Head (H) | max. 250 m |
Temperature | max. 200ºC |
Pressure rating | PN 25 |