The SunRotor SR-2 is a compact 2-inch submersible helical-rotor (progressive-cavity) solar pump designed for small-diameter wells and sand-point installations where suction pumps can’t reach. Its positive-displacement rotor/stator geometry produces pressure at low RPM, so the SR-2 starts moving water early in the morning, keeps pumping late in the afternoon, and maintains steady flow even as head increases.

The SR-2 pairs with a matched DC controller to accept power directly from PV, battery, or a combination, and it’s field-serviceable—built so wear components can be replaced without tossing the whole unit. With a wide usable input-voltage window, stainless construction, and a slim 2-inch OD that fits casings others can’t, the SR-2 is a go-to choice for livestock tanks, off-grid cabins, and remote water points where reliability, easy repair, and high lift from modest array sizes matter.

Product Details

• 2-inch submersible form factor fits narrow casings and sand-point wells beyond suction-lift limits.

• Progressive-cavity helical rotor delivers strong head at low RPM for dependable solar performance throughout the day.

• PV/battery flexibility: runs from solar, battery, or hybrid input using the matched SunRotor controller.

• High lift in small packages: capable of significant TDH with usable flows for stock tanks and cabins.

• Serviceable design: single moving part, rebuildable rotor/stator; wear parts are replaceable in the field.

• Rugged build: stainless body, sealed submersible motor section, and conservative thermal protection.

• Installer friendly: standard 3/4" FNPT outlet, slim profile for easy drop-in, and clear wiring to the controller.

Technical Specifications