SunRotor SRDI-36 Deep-Well AC/DC Solar Pump - Helical Rotor
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Description
Built for extreme lift applications, the SRDI-36 is SunRotor’s deep-well, positive-displacement submersible that reaches water others can’t.
Its helical-rotor (progressive-cavity) design generates high pressure at low RPM, giving early-morning starts, late-day run time, and steady flow as head increases—ideal for remote homesteads, ranch tanks, and wildlife water points where uptime matters.
An integrated controller inside the pump body accepts wide-range DC or single-phase AC, reducing wiring complexity and maximizing conversion efficiency. Stainless construction, a 4-inch-casing fit, and field-serviceable internals make it a durable, long-life choice for very deep wells.
Product Details
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Deepest lift in the line: Delivers about 3 GPM down to 900 ft TDH with proper arraying—built for serious depth.
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Dual-source power: Runs from 60–370 VDC PV input or single-phase AC, thanks to the integrated controller.
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Positive-displacement hydraulics: Progressive-cavity rotor/stator provides consistent flow as head rises and resists silt/air intrusion better than centrifugal designs.
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Serviceable & robust: Replaceable helical rotor; pump head and motor are rebuildable; brushless DC motor; integrated low-water cutoff. Installer friendly: 1" FNPT outlet, 3.9" OD to fit 4" casings, submersion limit 400 ft, and accessories like float/pressure switch kits available.
Technical Specifications
| Category | Specification |
|---|---|
| Pump type | Helical-rotor (progressive-cavity) submersible |
| Max depth / flow | Up to 900 ft TDH at ~3 GPM (array dependent) |
| Power input | 60–370 VDC PV or single-phase AC (via integrated controller) |
| Recommended PV power | ~250–840 W (see performance curves) |
| Outlet connection | 1" FNPT |
| Submersion limit | 400 ft below static water level |
| Diameter / height | ≈3.9 in OD (fits 4" casing) • ≈51.25 in tall |
| Weight | ≈29.5 lb (13.4 kg) |
| Construction | Stainless body; water-jacketed submersible motor; brushless DC |
| Protections | Integrated low-water cutoff |
| Serviceability | Field-replaceable helical rotor; pump head & motor rebuildable |
Figures summarized from the manufacturer’s SRDI-36 product page and spec sheet.
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Our goal is for every customer to be totally satisfied with their purchase. If this isn't the case, let us know and we'll do our best to work with you to make it right.
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Manufacturing
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