50QW15-15-1.5 Submersible Sewage Pump Specs & Dimensions

If you are looking for a small but reliable submersible sewage pump for residential or light commercial drainage, the 50QW15-15-1.5 is worth a close look. In this post, we go through the actual performance parameters, installation drawing dimensions, and common application scenarios — based on the factory drawing we have on file.

What Does the Model Number 50QW15-15-1.5 Mean?

Pump model names in the QW series follow a simple pattern. For the 50QW15-15-1.5:

• 50 — discharge diameter, 50 mm (2 inch)
• QW — submersible sewage pump (w-q = submersible, QW series)
• 15 — rated flow, 15 m³/h
• 15 — rated head, 15 m
• 1.5 — motor power, 1.5 kW

Performance Parameters

Parameter	Value
Flow rate (Q)	15 m³/h
Head (H)	15 m
Motor power	1.5 kW
Speed	2900 r/min
Discharge size	DN50 (2 inch)
Voltage	380V / 50Hz, 3-phase

Installation Dimensions (from Factory Drawing)

The drawing below shows the overall outline and flange dimensions of the 50QW15-15-1.5. Key measurements:

• Overall length: 340 mm
• Overall height: 600 mm
• Pump base width: 215 mm
• Flange outer diameter: Ø140 mm
• Flange bolt circle: Ø110 mm, 4 × Ø14 mm bolt holes
• Discharge bore: Ø50 mm

Installation outline drawing of 50QW15-15-1.5 submersible sewage pump

Typical Applications

This size of pump is commonly used for:

• Basement and underground garage drainage
• Sewage lifting in small residential buildings
• Pumping wastewater from hotel or restaurant kitchens (with grinder/chopper option)
• Construction site dewatering
• Farm and irrigation drainage

Warranty and Spare Parts

We supply this pump with a 12-month warranty (wear parts excepted). Common spare parts — mechanical seal, impeller, O-rings and gaskets — are kept in stock and available for immediate shipment.