Solar Pressure Pumps

Las bombas de presión solares suministran agua a grifos y duchas con energía fotovoltaica, trabajando a 12/24 V CC desde baterías o regulación adecuada. Ofrecen presión estable con bajo consumo y tamaño compacto, ideales para vivienda aislada, náutica y camper.

Elige esta colección cuando busques autonomía off-grid, funcionamiento silencioso y mantenimiento sencillo. Recomendamos añadir filtro de entrada y calderín para reducir ciclos y alargar la vida del presostato. Disponemos de marcas como Shurflo y accesorios compatibles.

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What are solar pressure pumps?

They are compact pumps (usually diaphragm type) that maintain pressure in the internal network using solar energy. They operate at 12/24 V DC powered by batteries charged with photovoltaic panels and suitable regulator/inverter, providing typical flow rates of 2–19 l/min and pressures of 30–100 PSI. They are suitable for off-grid homes, boats, and motorhomes, and are complemented with filters and pressure tanks for greater comfort.

Advantages and limitations

  • Low consumption and high efficiency in off-grid systems.
  • Self-priming, compact size, and easy maintenance.
  • Limitations: not designed for large continuous flow rates or for lifting from deep wells (for that, see submersible pumps).

Applications

  • Off-grid home: supply to taps, shower, and appliances via intermediate tank.
  • Marine and camper: stable pressure with low noise.
  • Remote stations and light irrigation huts.

How to choose

  • Flow rate (l/min) according to simultaneous points: 6–10 l/min for 1–2 points; 12–19 l/min for 2–3 points.
  • Pressure (PSI/bar) compatible with your network and accessories.
  • Voltage: 12 V (small systems) or 24 V (lower current and longer cable runs). See the 12V and 24V collections.
  • Comfort: add a pressure tank to reduce cycles and water hammer; add an inlet filter to protect the diaphragm.

Indicative specifications

Working voltage 12/24 V DC
Typical flow rate 2.1–18.9 l/min
Service pressure 30–100 PSI (≈2–6.9 bar)
Self-priming Yes (depending on model and suction height)
Control Integrated pressure switch/press-control
Recommended accessories 50 µm filter, Ibaiondo pressure tank 20–100 L, check valve

Best practices

  • Size wiring and fuse according to current (special attention at 12 V to minimize voltage drop).
  • Install a filter before the pump and purge the line at first start-up.
  • Adjust the cut-off pressure if the model allows; periodically check seals and connections.

Comparisons and related accessories

If you have a 230 V grid or inverter, consider AC pressure pumps. For more detail by voltage, visit 12V and 24V. Complete the installation with accessories (pressure tanks, filters, protections) and, for maintenance, spare parts at spare parts. Return to the overview at Pressure Pumps or to Water Pumps.

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