1 / 5
A solar electric water pump operates on a closed-loop principle. Fluid absorbs heat in the collector array and transfers it to a storage tank. The CWP020G/F model operates on 12V or 24V DC with a rated power of 17W or 18W (1±10%). It delivers a maximum flow of 10.5 or 9.5±1 L/min and a maximum head of 6 or 5.5±0.5 m. The U.S. Department of Energy identifies variable-speed operation as the preferred method when flow must track process demand.
A solar powered water pump must match the system's hydraulic and environmental requirements. The CWP020G/F operates in ambient temperatures from -25°C to 55°C and handles media temperatures from -15°C to 100°C, suitable for pure water or antifreeze.
For larger installations, a 48V DC water pump achieves higher head pressure for multi-story systems.
A solar energy water pump in potable water contact must comply with NSF/ANSI 61 for wetted materials and NSF/ANSI 372 for lead content. The IEA Solar Heating and Cooling Programme documents global solar thermal capacity reaching 505 GWth in 2025. With a submersible IP68 rating and Class F (155°C) insulation, the pump ensures reliable operation under demanding conditions.
For related options, refer to the 12V DC water pump series and the brushless DC pump catalog. Additional specifications are available on the solar water heater pump resource page.
| MODEL: CWP020G/F | |||
|
AMBIENT TEMP | -25~55℃ | |
| HUMIDITY | SUBMERSIBLE | ||
| MEDIUM | PURE WATER/ANTIFREEZE | ||
| MEDIUM TEMP | -15~100℃ | ||
| WATERPROOF | IP68 | ||
| CONSTANT/CONTINUOUS PRESSURE | 1.8MPa/0.5MPa | ||
| SPECIFICATION | FEATURE | ||
| RATED VOLTAGE | 12V, 24V DC | COLOR | BLACK |
| RATED CURRENT | 1.42, 0.75(1±10%)A | WEIGHT | 216 g |
| RATED POWER | 17W, 18 (1±10%) W | NOISE | ≦ 40dB@1m |
| MAX FLOW | 10.5, 9.5±1 L/min | LIFETIME | ≧5000H |
| MAX HEAD | 6, 5.5±0.5 m | INSULATION | F (155℃) |
A solar water heater pump operates on DC power from PV panels or batteries. A standard circulation pump requires AC mains power.
Yes. Brushless DC pumps with soft-start circuitry can connect directly to PV panels without a battery or inverter.
Required flow depends on collector area and desired delta-T. The CWP020G/F delivers up to 10.5 L/min.
NSF/ANSI 61 applies to any pump component contacting potable water. Solar water heating loops in direct contact require certified wetted materials.
Air ingress through degraded suction fittings, low collector fluid level, or pump installation above the fluid line. Dry-running protection circuits prevent damage.
