November 2025 — Prom-nasos.com.ua

Gear pumps are positive displacement pumps that offer a number of significant advantages: they can pump high-viscosity products; they have the ability for “dry priming,” meaning they do not require pre-filling of the working chamber; the pumping process is smooth, with a stable laminar flow; the possibility of reverse operation; easy and precise flow regulation using frequency converters or mechanical gearboxes and variators. Despite these excellent features, there are of course certain precautions that must be taken into account when operating a gear pump: The liquids being pumped must have lubricating properties (fats, glycerin, oil, motor lubricant, etc.). A gear pump must not be used to pump, for example, water, gasoline, solvent, or liquids containing solid particles. This can lead to the gears jamming and the motor windings burning out. The liquid should not contain hard abrasive or chemically active substances that can damage the working components — in particular the gears and the pump chamber. The design of a gear pump is based on minimal but sufficient clearances between the gears and the mating parts, which ensures high hydraulic efficiency and the advantages mentioned above; The pipeline or the pump itself must be equipped with a safety valve or bypass to prevent damage in case the valve on the discharge line is accidentally closed. The photos below show a typical example of gear pump operation in which sugar syrup containing undissolved sugar crystals was pumped. The photos clearly show wear on the cover, the end face of the gear, and the gear teeth caused by the mechanical impact of solid particles. Conclusion — before operation, read the user manual, remember the important points described there, and follow the instructions — this will significantly extend the service life of your pump.

WQK series pumps are specially designed for pumping sewage, drainage, and industrial wastewater containing impurities. The design includes: a specially designed impeller with a cutting edge that easily handles solid and long-fibred inclusions; high wear resistance thanks to durable materials used for the pump body and impeller; easy installation — the pump can be mounted either stationary or in mobile systems; the delivery set includes a 90° flanged elbow for a hose, complete with a clamp and fastening hardware. The WQK 35-10-3 model is suitable for medium-volume tasks: pumping sewage, technical liquids, or rainwater. Where it is used: Municipal utilities — sewage systems of private houses and multi-storey buildings. Industrial facilities — pumping technological wastewater and dirty water. Agriculture — field drainage, pond drainage, water intake from open reservoirs. Construction — removal of groundwater and rainwater on construction sites. Operating notes and recommendations Before starting, the pump must be fully submerged in water to avoid “dry running”. It is recommended to install an overload protection relay, as the motor may overheat if the impeller becomes jammed. For long service life, periodically check the condition of the cutting mechanism and seals. If the pump is used in a system with a high content of solid particles, it is advisable to install filter grates before the intake. WQK 35-10-3 is a drainage pump designed for those who need a reliable solution for handling dirty water. It combines durability, easy maintenance, and versatility of use. This unit is a good investment both for private households and industrial applications, as it allows quick and trouble-free water removal. You can order this pump or select a model according to your needs via this link .