Shurflo Trail King Pressurised Water Pump – 12V & 24V Options

The Shurflo Trail King pressurised water pump provides a reliable freshwater supply for campervans, motorhomes, caravans, boats and off-grid water systems.

Its automatic pressure switch starts the shurflo pump when a tap or shower is opened and switches it off once the outlet is closed and the system reaches the pump’s shut-off pressure. This delivers convenient, domestic-style running water without requiring a manual pump switch each time water is needed.

Choose from five voltage, flow-rate and pressure options to suit your installation:

• 12V – 7L/min – 20 PSI
• 12V – 7L/min – 30 PSI
• 12V – 10.6L/min – 30 PSI
• 12V – 10.6L/min – 45 PSI
• 24V – 10.6L/min – 30 PSI

Which Shurflo Trail King Pump Should I Choose?

12V 7L/min 20 PSI

A good choice for compact campervans and simple water systems supplying one or two outlets. Its lower pressure is suitable for basic taps and systems where a gentler flow is preferred.

12V 7L/min 30 PSI

Provides the same compact 7L/min flow rate with stronger water pressure. This option is well suited to campervans, caravans and motorhomes with a kitchen tap, washbasin or occasional shower.

12V 10.6L/min 30 PSI

The increased flow rate makes this pump better suited to larger water systems or installations where more than one outlet may be used. It provides a useful balance between water flow and moderate pressure.

12V 10.6L/min 45 PSI

The highest-pressure 12V option in this listing. It is intended for larger systems requiring stronger delivery or improved shower performance.

Before choosing the 45 PSI model, check the maximum permitted pressure of your water heater, taps, filter housings, pipework and other plumbing components. A pressure-reducing valve may be required where connected equipment has a lower pressure rating.

24V 10.6L/min 30 PSI

Designed for motorhomes, boats, commercial vehicles and off-grid installations operating from a 24V electrical system. It provides the higher 10.6L/min flow rate while maintaining a moderate 30 PSI pressure.

Automatic Pressure-Controlled Operation

These Shurflo pumps use an integral pressure switch to control operation automatically. Opening an outlet reduces the system pressure and starts the pump. Closing the outlet allows pressure to build until the pump switches off.

A multi-diaphragm design helps produce consistent water delivery, while rubber mounting feet help reduce vibration transmitted into the vehicle or installation surface.

For the best performance, fit a suitable Shurflo inlet filter between the freshwater tank and pump. This helps prevent debris from entering the pump and affecting the valves or diaphragm.

Explore our complete collection of Shurflo water pumps and accessories.

Connections and Plumbing

These pumps can be incorporated into flexible hose systems or rigid campervan plumbing using suitable adapters.

For a professional push-fit installation, browse our range of John Guest 12mm pipe and fittings, including hot and cold water pipe, elbows, tees, valves and threaded adapters.

An accumulator tank may also be installed to:

• Smooth the water flow
• Reduce rapid pump cycling
• Help reduce noise and vibration
• Provide a small reserve of pressurised water
• Improve performance at low flow rates

Browse our wider water tanks and plumbing range for tanks, filters, pipework, fittings and installation accessories.

Key Features

• Automatic demand-operated water pump
• Integral pressure switch
• Choice of 12V water pump or 24V models
• Flow rates of 7L/min or approximately 10.6L/min
• Pressure options of 20, 30 or 45 PSI
• Multi-diaphragm pumping design
• Self-priming operation
• Can tolerate running dry for limited periods
• Integral motor overload protection
• Rubber mounting feet help reduce vibration
• Suitable for freshwater systems
• Ideal for campervans, caravans, motorhomes, boats and off-grid installations

Variant Comparison

Important Installation Information

• Select the pump voltage that matches your electrical system.
• Install a correctly rated fuse close to the electrical supply.
• Use appropriately sized cable to minimise voltage drop.
• Fit a pump inlet filter between the water tank and pump.
• Mount the pump in a dry, ventilated and accessible position.
• Use flexible hose close to the pump to help reduce transmitted noise.
• Do not connect the pump directly to mains electricity.
• Check that all plumbing components can withstand the selected pump pressure.
• Do not use these freshwater pumps for fuel, oils, chemicals or flammable liquids.

Product Information

• Brand: Shurflo
• Range: Trail King
• Product type: Automatic pressurised freshwater pump
• Voltage options: 12V or 24V DC
• Flow-rate options: 7L/min or approximately 10.6L/min
• Pressure options: 20 PSI, 30 PSI or 45 PSI
• Operation: Automatic pressure switch
• Application: Freshwater systems