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.
Specs & Info