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Overview
Replacement DC water pump for solar fountain and pond systems. The same pump that powers the PowerBee Sunspray SE 1000 — sold as a standalone replacement to give a tired fountain a brand new heart.
Which Sunspray SE 1000 do you have? This pump fits Sunspray SE 1000 fountains supplied from March 2024 onwards. If your fountain was bought before March 2024, you need the older variant — see our SE 1000 Spare Pump (pre-March 2024). To check: lift the original pump out of the water and read the model number on its spec label — this listing fits pumps marked BP401215D; the earlier variant is marked BP401209D.
Replacement pump only. Pump and 2 m cable supplied — fountain nozzles, extension tubes, solar panel and battery are not included. Reuse your existing fittings.
Wide 12-18 V DC input — works with any compatible solar setup
Long-life brushless motor — no brushes to wear out
Dry-run protection saves the motor if water levels drop
Adjustable flow control to fine-tune fountain height
IP68 fully submersible for permanent in-pond use
Direct drop-in replacement for the Sunspray SE 1000 pump
A reliable replacement DC water pump designed for solar-powered pond pumps, water features, and fountain systems. With a 900 L/H flow rate and 3.0 m maximum head height at 18 V, this pump delivers strong circulation for medium-sized garden displays. Built-in dry-run protection safeguards the motor if water levels drop, and the wide 12-18 V input range makes it compatible with most solar fountain power systems.
900 L/H Flow @ 18V3.0 m Max Head12-18 V DC InputDry Run ProtectionIP68 Submersible2-Year Warranty
Replacement Pump — What You Get
This listing is for the BP401215D pump unit and its 2-metre power cable only. It is designed as a like-for-like replacement for the pump used in the PowerBee Sunspray SE 1000 Professional Solar Fountain, or for any compatible 12-18 V solar fountain system where the original pump has worn out or failed.
What's in the box: 1 × BP401215D DC water pump with attached 2.0 m DC power cable.
Not included: Solar panel, battery box, fountain nozzles, extension tubes, hose, fittings — these stay with your existing fountain. If you need a complete kit instead, see our Sunspray SE 1000 Professional Solar Fountain listing.
Key Features
Engineered for performance and durability, the BP401215D is the same pump unit found in our Sunspray SE 1000 Professional Solar Pump kit. Now available as a standalone replacement.
Powerful Performance
900 L/H max flow @ 18 V
3.0 m max head @ 18 V
Wide 12-18 V DC input range
Adjustable flow control
Built for Reliability
Dry-run protection (D-type)
Brushless motor — long service life
Maintenance-free operation
IP68 fully submersible
Practical Design
Compact 105 × 68 × 72.5 mm body
2.0 m power cable
DC barrel connector
UK stock — fast dispatch
Performance — 12 V vs 18 V Operation
The BP401215D is designed to run across the full 12-18 V DC range, so the same pump can be used with 12 V battery systems or 18 V solar setups. Output scales with voltage: at 12 V you get a gentler 680 L/H and 1.7 m of head — ideal for smaller displays, battery-only operation, or low-light conditions. At 18 V you get the full 900 L/H and 3.0 m of head — ideal for full-size fountain displays, direct solar in good sun, and taller features.
For full numerical performance data see the Specifications tab.
Compatibility
This is the same pump unit used in the PowerBee Sunspray SE 1000 Professional Solar Pump kit, so it is a direct drop-in replacement for any system already using the BP401215D. It will also work as a replacement in any third-party fountain system that takes a 12-18 V DC input pump with a barrel-style power connector. Re-use your existing fountain nozzles, extension tubes and power source.
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This pump is supplied as a like-for-like replacement. In most cases you can drop it into your existing solar fountain housing and reuse the original nozzles, tubes and power source. Allow about 15 minutes for the swap.
Before You Start
Disconnect the existing pump from its power source (solar panel, battery box, or transformer)
Have a small Phillips screwdriver to hand if your existing fountain housing uses screws
Check the inside of your pond or reservoir is reasonably clean — dirt or grit will reduce the lifespan of the new pump
Confirm your power source delivers between 12 V and 18 V DC with a barrel connector — anything outside this range or AC will damage the pump
Step 1: Remove the Old Pump
Lift the old pump out of the water and disconnect its DC plug from your power source
If the pump is held in a fountain housing or reservoir clip, release it carefully
Unscrew or pull off the existing fountain extension tube / nozzle assembly from the outlet on top of the old pump — keep these aside, you will reuse them
Step 2: Fit Your Existing Nozzles to the New Pump
The BP401215D has a standard barbed outlet on top — push your existing extension tube or nozzle base firmly onto it
If you use the bell / mushroom / single-jet nozzles from a Sunspray SE 1000 kit, they fit directly with no adapter needed
Make sure the joint is firm — a loose nozzle will reduce fountain height
Step 3: Position the Pump in Water
Place the pump fully submerged in your pond, reservoir, or fountain bowl
The pump must always be deep enough that the inlet vents on the sides of the body are completely below the water line
If you have a reservoir grid or stand, sit the pump on it to keep the inlet above any silt at the bottom
Route the 2 m DC cable up and out of the water through the same exit your old pump used
Step 4: Connect to Your Power Source
Plug the DC barrel connector into the matching socket on your solar panel, battery box, or DC transformer
The pump will start immediately if the supply is live — there is no on/off switch on the pump itself, control is at the source
For solar systems, the pump will start as soon as the panel is generating enough voltage (typically full sunlight on a 20 W or larger panel)
Step 5: Test and Adjust the Flow
Watch the fountain run for a few minutes and check it is steady, not surging
Use the flow control dial on the pump body to fine-tune the spray height — clockwise to reduce, anti-clockwise to increase
If the dry-run protection cuts in, the pump has detected no water flow — check the inlet is not blocked and the pump is fully submerged
Routine Maintenance
Every 2-4 weeks in summer: lift the pump out and rinse the inlet vents and impeller chamber under a tap to remove silt and algae. This is the single biggest factor in pump lifespan.
Monthly: check the cable for damage and the connector for corrosion
Winter: in freezing conditions, remove the pump from the pond and store indoors — water freezing inside the pump body can crack the housing
Important Notes
Never run the pump out of water for more than a few seconds — even with dry-run protection, prolonged dry running can damage the seal
Only use a 12-18 V DC supply with the correct polarity — reversing polarity or applying AC will damage the motor
The pump cannot be opened for repair — it is a sealed unit. If it fails within the warranty period, contact PowerBee for replacement
For technical support call PowerBee on 07782 223103 or email support@powerbee.co.uk
The BP401215D is a low-voltage DC pump built for solar fountain and pond circulation systems. Unlike a mains pump it doesn't need 230 V — it runs directly off any 12-18 V DC supply, making it ideal for solar panels, battery systems, or low-voltage transformers. Here's how each part of the pump works together to give reliable, long service.
1. Brushless DC Motor
Inside the sealed pump body, a brushless DC motor spins the impeller. Brushless motors have no carbon brushes to wear out, so the only moving part exposed to wear is the impeller bearing — which is why these pumps typically last several seasons in continuous operation.
Brushless designs are also more efficient than brushed motors, drawing less current per litre pumped — important when running directly from a solar panel where every watt counts.
2. Wide 12-18 V Voltage Range
The BP401215D accepts any DC supply between 12 V and 18 V. Output scales smoothly with voltage — at 12 V you get 680 L/H and 1.7 m of head, at 18 V you get the full 900 L/H and 3.0 m of head.
This wide range matters for solar systems: when the sun is bright the panel produces closer to 18 V, so the fountain runs at full power. When light dips, voltage drops and the pump simply runs slower instead of stalling. There is no on/off threshold — the pump keeps water moving across the full voltage range.
3. Dry Run Protection (D-type)
The biggest killer of submersible pumps is being run without water. The motor relies on the surrounding water for cooling, and the impeller relies on water for lubrication of the bearing. Run a normal pump dry and the bearing burns out within minutes.
The BP401215D has a built-in dry-run sensor that detects when the pump is no longer moving water (because the pond level dropped, the inlet got blocked, or it was lifted out of water). When that happens the controller cuts power to the motor automatically and tries again periodically. As soon as water returns, normal operation resumes.
4. Adjustable Flow Control
A flow restrictor on the pump body lets you dial the output up or down without changing the input voltage. This is how you fine-tune fountain spray height — turn it down for a gentle bubbling effect, turn it up for a tall jet.
Flow control is mechanical, not electronic, so it doesn't waste power. Restricting the flow doesn't increase electrical load on the motor or damage it.
5. IP68 Fully Submersible Construction
The pump body and all electrical connections inside it are sealed to IP68 standard, meaning the pump can be permanently submerged. There is no minimum depth — as long as the inlet is fully under water and the cable gland is intact, the pump can sit at the bottom of a pond or in a shallow water-feature reservoir.
The 2.0 m DC cable exits the body through a sealed gland and is rated for continuous immersion.
Performance at a Glance
Input
Max Flow
Max Head
Power Draw
12 V DC
680 L/H
1.7 m
5.2 W
18 V DC
900 L/H
3.0 m
12 W
In Summary
The BP401215D combines a long-life brushless motor, dry-run protection, IP68 sealing, and a wide 12-18 V input range into a single compact pump. It's the pump unit that powers the PowerBee Sunspray SE 1000 Professional Solar Fountain — sold here as a standalone replacement for customers whose original pump has reached end-of-life.
