The Reliable 12V Diaphragm Water Pump for Off-Grid Pressure
Delivering 17L/min at 40 PSI. The quiet, self-priming solution for your caravan, boat, or garden irrigation system.
Free UK Delivery
Next-day dispatch from our UK warehouse
2-Year UK Warranty
Full manufacturer warranty with UK support
30-Day Free Returns
No questions asked, prepaid return label
Automatic Self-Priming
Built-in pressure switch for hands-free, safe operation
Happy Customers
Avg Rating (381+ reviews)
Satisfaction Rate
Loved Across Britain
DC Autom
£63.32 inc. VAT (£52.77 ex. VAT)
Also £75.99 on Amazon — You save £12.67
A versatile, quiet-running 12V self-priming water pump delivering a steady 17 litres per minute at 40 PSI. Perfect for caravans, marine washdowns, and off-grid irrigation.
Installation Guide
- Mount the Pump: Secure the pump in a dry, ventilated area using the anti-vibration rubber feet. Do not over-tighten the screws to allow the rubber to absorb noise.
- Connect Plumbing: Attach 1/2" flexible hosing to the inlet and outlet barbs, securing them tightly with jubilee clips to prevent air leaks.
- Wire the Power: Connect the pump to a fused 12V DC power source (e.g., a leisure battery) ensuring correct polarity (red to positive, black to negative).
- Prime and Test: Open your tap or nozzle, turn on the power, and allow the pump to self-prime. Once water flows smoothly, close the tap to verify the automatic pressure switch turns the pump off.
Trusted by UK Caravan & Boat Owners
Customer Reviews
Bought this as a boat freshwater pump for our narrowboat. The self-priming works perfectly right out of the box, and the pressure is fantastic for washing down the deck. Much quieter than our old unit.
An excellent caravan water pressure pump. Upgraded our old 7L/min pump to this 17L/min beast and the difference in the shower is night and day. Highly recommend for any motorhome owner.
I use this as a garden irrigation booster pump on my off-grid smallholding. It runs effortlessly off a solar-charged 12V battery and provides steady pressure to all my raised beds.
Great 40 psi diaphragm pump, delivers exactly the flow promised. My only minor gripe is that the power lead tails could be a bit longer for easier wiring, but it was simple enough to extend them.
I was looking to buy 12v diaphragm water pump online and compared this to a Shurflo. Honestly, for the price, this is incredible value. The automatic shut-off is instant and it feels very solidly built.
Using this in my mobile valeting van. The 17 lpm flow is brilliant for filling buckets quickly and running my low-pressure rinse hose. Good piece of kit, does exactly what I need.
Frequently Asked Questions
Founded with a passion for off-grid living and mobile travel, DC Autom was created to solve a common frustration: weak, unreliable water pressure in caravans, boats, and remote gardens. We understand that when you're away from the mains, you still expect your taps, showers, and washdown hoses to perform flawlessly.
Our flagship 12V diaphragm pumps are engineered for the demanding UK environment. By focusing on essential features like automatic pressure switches, self-priming capabilities, and thermal overload protection, we deliver a product that rivals the biggest names in the industry-without the premium price tag. We believe that upgrading your mobile water system should be straightforward, safe, and highly effective.
Operating from our UK warehouse, we pride ourselves on exceptional customer support and fast dispatch times. Whether you are a weekend motorhome enthusiast, a dedicated narrowboat owner, or a professional mobile valeter, DC Autom is committed to keeping your water flowing smoothly, quietly, and reliably.
Why UK Customers Love Us
Our products are designed and supported in the UK, ensuring superior quality and fast tracked delivery from our British warehouse. We offer free UK delivery on all orders, eco-friendly packaging to reduce carbon footprint, and warm, direct customer service. Every order is backed by a generous 30-day returns policy under the UK Consumer Rights Act 2015 — you are always protected.
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