{"id":24129,"date":"2025-10-09T07:54:10","date_gmt":"2025-10-09T07:54:10","guid":{"rendered":"https:\/\/vakkimsa.com\/it\/blog\/2026\/07\/22\/5-red-flags-in-helical-pumps-you-cannot-ignore\/"},"modified":"2026-07-22T08:11:32","modified_gmt":"2026-07-22T08:11:32","slug":"5-red-flags-in-helical-pumps-you-cannot-ignore","status":"publish","type":"post","link":"https:\/\/vakkimsa.com\/it\/blog\/2025\/10\/09\/5-red-flags-in-helical-pumps-you-cannot-ignore\/","title":{"rendered":"5 Red Flags in Helical Pumps You Cannot Ignore"},"content":{"rendered":"\n

When working with fluids of varying viscosities, pastes or suspensions -as is common in the food, chemical or water treatment industries- any anomaly<\/strong> in the system can lead to serious consequences<\/strong>.<\/p>\n\n\n\n

\ud835\udddb\ud835\uddf2\ud835\uddf9\ud835\uddf6\ud835\uddf0\ud835\uddee\ud835\uddf9 \ud835\uddfd\ud835\ude02\ud835\uddfa\ud835\uddfd\ud835\ude00 are essential equipment in the various manufacturing processes of many different sectors. They are positive displacement<\/strong> rotary pumps operating by means of a rotor turning inside a stator, moving a constant volume of fluid per revolution<\/strong>, smoothly and without pulsation. <\/strong><\/p>\n\n\n\n

This type of pump is particularly useful for viscous fluids, fluids containing particulates or sensitive to shear<\/strong>. Their flow is reversible and they maintain a nearly constant flow -even under variations in pressure or viscosity. Our pumps can reach high pressures (up to 24\u202fbar)<\/strong> and manage flow rates from 500 to 100,000\u202fL\/h<\/strong> depending on the model, and allow passage of soft<\/strong> solids up to 80\u202fmm or hard<\/strong> solids up to 20\u202fmm, depending on the configuration.<\/p>\n\n\n\n

At Vak Kimsa we manufacture pumps in two main series –industrial and sanitary<\/strong>– which are in high demand within these sectors.<\/p>\n\n\n\n

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VK Helical Pumps – Sanitary IA series<\/figcaption><\/figure>\n\n\n\n

What can happen when they are not properly selected or operated?<\/strong><\/p>\n\n\n\n

The correct selection of a pump, based on a precise definition of the process and on Vak Kimsa’s technical experience in designing pumping solutions, is critical to guarantee the efficiency and durability of the system.<\/p>\n\n\n\n

However, the lack of information or knowledge about operating criteria can generate recurring incidents and operational problems.<\/p>\n\n\n\n

We have selected the five most common symptoms when  something is going wrong with your pump:<\/p>\n\n\n\n

1. Abnormal vibrations and noise<\/strong><\/p>\n\n\n\n

\u201cThe pump produces strange vibrations and noises\u2026\u201d<\/em><\/p>\n\n\n\n

This symptom commonly indicates cavitation<\/strong>, typically caused by an incorrect selection of operating speed in relation to the product and application. If not corrected in time, it can cause internal damage and unexpected downtime.<\/p>\n\n\n\n

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2. Loss of Flow or Pressure<\/strong><\/p>\n\n\n\n

\u201cI\u2019ve noticed a loss of flow or pressure and the pump has barely been running.\u201d<\/em><\/p>\n\n\n\n

This scenario often points to premature wear of the stator, which usually arises when the pump is not well suited to the product or the operating conditions.<\/p>\n\n\n\n

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3. Leaks and a Burnt Smell<\/strong><\/p>\n\n\n\n

\u201cThere is product leakage through the mechanical seal and the stator smells burnt.\u201d<\/em><\/p>\n\n\n\n

This issue suggests the pump has run dry\u2014that is, without fluid\u2014which generates friction and rapid degradation of both the stator and the mechanical seal.<\/p>\n\n\n\n

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4. Problems at High Temperatures<\/strong><\/p>\n\n\n\n

\u201cWhen operating at high temperatures, the pump seizes and won\u2019t start\u2026\u201d<\/em><\/p>\n\n\n\n

This behaviour is often the result of inadequate rotor\u2013stator geometry design, one that cannot tolerate demanding thermal conditions. Poor design can seriously compromise process continuity.<\/p>\n\n\n\n

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5. High Maintenance Costs and Frequent Downtime<\/strong><\/p>\n\n\n\n

\u201cThe costs of maintenance and downtime are becoming increasingly frequent (and expensive).\u201d<\/em><\/p>\n\n\n\n

When this happens, it is usually because the pump was not properly selected for the application or because the materials are incompatible with the fluid being pumped.<\/p>\n\n\n\n

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Solutions<\/strong><\/p>\n<\/blockquote>\n\n\n\n

At Vak Kimsa we have extensive experience in identifying and preventing these process incidents. Through precise technical selection adapted to each application, we ensure:<\/p>\n\n\n\n