The new GQN 50 range completes the GQ family of drainage pumps, in particular alongside the GQS 50 and GQV 50 models which, being equipped with a free-flow or vortex impeller, are instead suitable for dirty water with long-fibre solids.

The main characteristic of the GQN 50 pump is that it has a two-channel impeller that allows the passage of solids up to a diameter of 50 mm. The union of this element with the production regulations of the GQ pump family makes the new range a very interesting technical development for the drainage pump sector.

A single-channel impeller, like that of the GMC 50, needs a very strong structure to support vibrations. Thanks to the optimal balance guaranteed by the two-channel impeller, the GQN models instead have a slim structure, so they are also economically more advantageous.

The other strong points are the same as those of the GQ drainage pumps:

• double mechanical seal on the shaft with oil chamber in between, for safe motor-water separation and to stop the pump from running dry accidentally;
• dry winding with triple impregnation for better resistance to humidity;
• air valve that allows the air to exit around the impeller, and which guarantees safe pump priming even after long periods of inactivity;
• impeller and pump body with an epoxy-based electropainted coating for better protection against rust;
• motor, available both single phase and three-phase, equipped with a built-in capacitor that can be inspected, with thermal protection and built-in float switch.

The G2ISO 228 delivery port of the new GQN range faces upwards, so the models can be installed in small wells without requiring a pump bend for the pump.