6 Inch Deep Well Submersible Pumps: Choosing a 150QJ

Which 150QJ suits which job?

The 150QJ fits wells of 150 mm and up and is the workhorse size for irrigation and village supply. The flow size you need decides most of the choice:

• 150QJ5 and 150QJ10: small yield, deep water. Heads reach 300 m
• 150QJ20 and 150QJ25: the middle of the range, with the widest choice of heads (26 to 163 m and 24 to 152 m)
• 150QJ32: 32 m³/h for heads up to 108 m
• 150QJ50: 50 m³/h for shallow lifts, from 6 to 72 m

Why are there so many 150QJ20 models?

Each extra stage adds about 6.5 m of head to a 150QJ20. Building the pump with 4 to 25 stages gives 22 models, from 26 m to 163 m, so you can buy the head you need instead of a much bigger pump throttled back.

What changes as the head rises?

Motor power and cable size. A 150QJ20-26/4 needs 3 kW and a 3×4 mm² cable. A 150QJ20-163/25 needs 15 kW and a 3×10 mm² cable. The outlet stays at 50 mm for flows up to 20 m³/h, 65 mm at 25 and 32 m³/h, and 80 mm at 50 m³/h.

See the full 150QJ list in our selection table.