Description
The 36 V solar water pump is Flocea’s professional entry-level model — and the most affordable solar booster set on the market for domestic use and light agricultural work. With a flow of 3,000 litres per hour and a head of 35 m, it waters a garden, fills a tank, supplies an off-grid home or waters a small flock, running on nothing but sunlight. No electrician needed; a 600 W solar array to be allowed for separately; no electricity bill.
Recommended solar array: 600 W (not included). Total head: 35 m. Maximum suction lift: 8 m.
Full technical specification
| Parameter | Value |
|---|---|
| Maximum flow (Q max) | 3,000 L/h |
| Total head (H max) | 35 m |
| Maximum suction lift | 8 m |
| Supply voltage | 36 V DC |
| Motor power | 0.4 kW / 0.54 hp |
| Recommended array power | 600 W |
| Motor type | Brushless permanent-magnet synchronous DC |
| Pump shaft | 304 S/S stainless steel |
| Inlet / outlet size | 1″ × 1″ (DN 25) |
| Electrical protection | IP65 (fully sealed) |
| Temperature range | -15°C to +60°C |
| MPPT controller | Built in |
| Display | Integrated LED status display |
| Dry-running protection | Automatic shutdown + restart after 30 min |
| Warranty | 2 years |
| Solar panel | Not included |
💡 Solar booster set: paired with a 24 or 50 litre pressure vessel, this pump works as a complete solar booster set — it starts automatically when a tap is opened, stops when it is closed, and holds a constant pressure throughout the system. No mains wiring, and a two-hour installation.
What is it designed for?
Solar booster set — home and garden
Pressurised water supply for a cabin, a country house or a garden tap, drawn from a pillow tank or a well. Up to 35 m of head: enough for every everyday domestic use.
Vegetable-garden watering and light irrigation
Feeding a drip line or sprinklers over 500 to 1,500 m² of growing area. Ideal for market gardeners selling direct, or anyone with a large productive garden.
Tank filling and water transfer
Pumping from a pond, a watercourse or a shallow well into a pillow tank for storage. A 5 m³ tank filled in under two hours in good sunshine.
Watering small livestock
Feeding troughs for 20 to 50 head (sheep, goats, poultry) in places with no mains supply. Completely self-sufficient, even on upland grazing or in remote countryside.
📍 Example configuration — solar booster set in an off-grid house: an off-grid holiday cottage supplies its bathrooms from a 3,000 L pillow tank set in the crawl space. The 36 V pump, paired with a 50 L vessel, holds a steady 2.5 bar throughout the system. The panels (2 × 300 Wp) run the pump during the day and refill the tank. At night the stored reserve takes over. Electricity cost attributable to pumping: £0.
Using the 36 V as a solar booster set
Un solar booster set is simply a solar pump paired with a pressurised diaphragm vessel. The principle: the pump fills the vessel under pressure, then stops. When you open a tap, water comes out of the vessel without the pump starting. The pump only restarts once the pressure drops below an adjustable threshold.
This has two major benefits: constant pressure throughout the system, and far fewer motor starts — which significantly extends the pump’s life. The 36 V is sized to feed a 24 to 50 litre vessel, enough for a house, a holiday let or a reasonably sized farm building.
⚠️ Suction limit: like every surface pump, the 36 V will lift water from up to 8 m at most. For a well or borehole deeper than 8 m, a submersible pump is required. If you are unsure about your installation, contact our team — free sizing.
Installation in 4 steps
No electrician and no cable trench required. Allow two to three hours for a complete installation in booster-set configuration.
- Orient the solar array (not included): facing south, tilted 30–35°, clear of shade. Recommended power: 600 W (e.g. 2 × 300 Wp panels). Maximum array-to-pump distance: 10 m using 4 mm² DC cable.
- Wire up the MPPT controller : connect the array’s DC cable to the box built into the pump, observing polarity (+ and -).
- Fit the suction hose : DN 25 (1″), length ≤ 12 m, with a foot valve at the source. Never reduce the diameter on the suction side.
- Connect the discharge to the tank, the pressure vessel or the distribution system. For booster-set use, fit the vessel between the pump and the system, with a pressure switch set to 2–3 bar.
💡 First priming: before the very first start, fill the pump body by hand through the filler plug. After that first step, the foot valve keeps it primed automatically on every restart.
Where this model sits in the range
The 36 V is the entry model for domestic needs and light agricultural work. If you need more than 3,000 L/h, or a head above 35 m, look at the larger models:
| Model | Max flow | Max head | Array | Typical use |
|---|---|---|---|---|
| 36 V solar pump | 3,000 L/h | 35 m | 600 W | Booster set, garden, small livestock |
| 48 V centrifugal pump | 5,000 L/h | 30 m | 700 W | Market gardening, off-grid home |
| 72 V centrifugal pump | 25,000 L/h | 18 m | 900–1,200 W | Agricultural irrigation, livestock |
| 96 V centrifugal pump | 25,000 L/h | 24 m | 1,800 W | Intensive agriculture |
To choose between a surface model and a submersible pump, or to work out your head, see our complete guide to solar water pumps.
Frequently asked questions about the 36 V solar pump
Can this pump work as a solar booster set?
Yes, that is one of its main uses. To run it as a solar water booster set, pair the pump with a pressurised diaphragm vessel (24 or 50 litres) and a pressure switch set between 1.5 and 3 bar. The pump charges the vessel, which then feeds the system without the pump starting every time a tap is opened. This arrangement gives constant pressure and extends motor life.
Which solar array should be used with the 36 V pump?
The pump runs in 36 V DC. The recommended power is 600 W — that is, two 300 Wp panels wired in series. You can go up to 800 W without risk to the built-in MPPT controller. Below 600 W the pump will run at reduced flow.
What is the difference between the 36 V and the 48 V?
The two models have comparable head (35 m against 30 m), but the 48 V delivers nearly twice the flow: 5,000 L/h against 3,000 L/h for the 36 V. The 36 V is the right choice for domestic use or a small garden. The 48V comes into its own as soon as you need more than 3,000 L/h, or the installation calls for more power (market gardening, a pool, a household with high consumption).
Does this pump work in cloudy weather?
Yes, but at reduced flow. Under overcast skies the array produces 15 to 30% of its rated power, and flow drops to 500–900 L/h. For continuous use regardless of the weather, store the water in a buffer tank during the sunny hours.
Can it be used on a 10-metre well?
No. The maximum suction lift is 8 metres. Beyond that the pump cannot prime. For a well deeper than 8 m, a solar submersible pump is required. Contact our team for sizing to suit.
How much water can the 36 V pump in a day?
In the UK, reckon on 4 to 6 hours of useful sunshine in summer, less in the north. At 3,000 L/h flat out, that comes to 12,000 to 18,000 litres a day in the best conditions. In spring, autumn or hazy weather, divide those figures by two or three. For night-time use, a buffer tank or a battery bank is needed.
Is an electrician needed for the installation?
No. The wiring is limited to the DC cable between the array and the pump — low-voltage direct current, with no connection to the 230 V mains and no electrical certification. The hydraulic side (suction pipe, foot valve, discharge connection) is standard. Allow two to three hours for the whole installation.
The 36 V solar pump — a compact solar booster set — in brief:
- 3,000 L/h — the right flow for a garden, an off-grid home and small livestock
- 35 m head — covers every domestic use and a solar booster set up to two storeys
- 600 W array — a light installation; two standard panels are enough
- A turnkey solar booster set with pressure vessel — constant pressure with no needless starting
- Brushless motor with stainless parts — 10 to 15 years of life, minimal upkeep
- To pair with a Flocea pillow tank for complete water autonomy
Not sure about your set-up? Contact our technical team — reply within 24 hours, free sizing.
