QGD series is a sandproof small size submersible screw pump that is a patented product of our company.

QGD Series of sandproof small size submersible screw pump is mainly consisted of submersible motor, single screw pump and seal, motor is dry type or oil-filling type construction.

The motor is positioned under the pump and submerged in water,so the heat dissipation effect is very good.

The cavity which carring pumped liquid from inlet progresses towards the discharge end.

The motor adopts "O" sealing ring and double end face mechnical seal.Function of seal is reliable and long working life.

Performance table:

Type	size Q-H-KW	Motor power		capacity		Voltage	Max.Dia	Pip.dia
		kw	Hp	m3/h	m	v	mm	inch
QGD	1-50-0.25	0.25	0.35	1	50	220/380	94.5	1
	1.2-50-0.37	0.37	0.5	1.2	50		102	1
	1.8-50-0.50	0.5	0.7	1.8	50			1
	0.8-100-0.50	0.5	0.7	0.8	100			1
	2.5-50-0.55	0.55	0.75	2.5	50		127	11/4
	1.2-100-0.55	0.55	0.75	1.2	100			1
	3.5-50-0.75	0.75	1	3.5	50			11/4
	1.8-100-0.75	0.75	1	1.8	100			1
	1-150-0.75	0.75	1	1.0	150			1

Longfu Brand QGD1-50-0.25 Oil Screw Pumps