Solar Screw Pump for Deep Wells | DSS 120

solar screw pump with progressive cavity rotor, full length view

Overview

A screw pump moves water with a rotating helical rotor inside a rubber stator, not with an impeller. That changes what it can handle: it keeps working in low-yield boreholes, it tolerates sand better than a centrifugal stage, and it produces steady flow at high head from very little power. The trade is flow — 1.2 to 1.7 m³/h, not 30. This is the pump for a 3-inch well that gives a trickle, not for a 30 m³/h irrigation block.

Key Features

Works where centrifugal pumps stall — Positive displacement keeps lifting in low-yield wells instead of losing prime.

Tolerates sand — The rotor/stator pair handles light sand loads better than close-clearance impellers.

Head to 109 m on 500 W — High head from very low power, which keeps the panel count and cost down.

Fits 2-inch and 3-inch wells — Narrow body for old or small-diameter boreholes that a 4-inch pump will not enter.

Steady flow, not peak flow — Output stays close to rated across the head range, which suits drip systems.

Technical Specifications

Model	Power	DC input	Max flow	Max head	Outlet
2DSS1.2-56-24-120	120 W	24 V	1.2 m³/h	56 m	0.75"
3DSS1.2-77-36-210	210 W	36 V	1.2 m³/h	77 m	0.75"
3DSS1.7-109-48-500	500 W	48 V	1.7 m³/h	109 m	0.75"
3DSS2-150-48-750	750 W	48 V	2.0 m³/h	150 m	0.75"
3DSS2.2-180-72-1100	1,100 W	72 V	2.2 m³/h	180 m	0.75"

Model code: first digit = well size (2″ or 3″), DSS = screw pump, then max flow (m³/h) – max head (m) – DC voltage – motor power (W). Specifications may be updated by the plant — confirm current values with us before ordering.

Applications

Deep narrow boreholes; low-yield wells where a centrifugal pump cycles on and off; drip irrigation from a small source; livestock watering points; household supply in areas with low groundwater recharge.

Get a Quote

Tell us the model or the duty you need — flow, head, well diameter and destination — and we cost it with the plant and reply with one FOB number. Single-unit orders welcome.

WhatsApp Us Email Us

Frequently Asked Questions

Why is the flow so much lower than the other solar pumps?

Because it is a positive-displacement pump, not a centrifugal one. It trades flow for head and for tolerance of sand and low yield. If you need volume, look at the DSC or DPC series; if you need water from a weak, deep, narrow well, this is the one that works.

Will it fit my existing borehole?

It is made in 2-inch and 3-inch body sizes. Measure your well casing inside diameter before ordering — a 4-inch pump physically will not go into a 3-inch well, which is the most common ordering mistake we see.

What happens if the well runs dry?

The controller should cut the pump on dry-run protection. Confirm this at order time — we specify the controller configuration with the plant for each order.