Large - 12v 10ltr 30psi Pre-Mounted Water Pump & 12mm Plumbing Kit
Large - 12v 10ltr 30psi Pre-Mounted Water Pump & 12mm Plumbing Kit
Couldn't load pickup availability
Our 12mm Campervan Plumbing Kit with Pre-Mounted 10L 30 PSI Pump & Accumulator has been carefully put together to provide a reliable starting point for installing a complete pressurised fresh water system in a campervan, motorhome or van conversion.
The kit combines a 10 litre per minute, 30 PSI 12V quad diaphragm water pump and accumulator, conveniently pre-mounted together on a board, with quality John Guest 12mm semi-rigid pipe, push-fit fittings, isolation valves and installation accessories.
We have selected the components based on our extensive experience selling water system products, concentrating on the fittings and quantities most commonly required when putting together a campervan plumbing system.
Quality John Guest 12mm Plumbing
The plumbing side of the kit is based around John Guest 12mm OD semi-rigid pipe and push-fit fittings.
Push-fit plumbing makes installation straightforward without requiring specialist tools. The supplied pipe inserts are fitted into the ends of the semi-rigid pipe before connecting to the push-fit fittings, while the red and blue collet locking clips provide additional security once the system has been assembled.
Separate red and blue pipe is supplied to make it easy to identify hot and cold water circuits throughout the installation.
Pre-Mounted 10L 30 PSI Quad Diaphragm Pump & Accumulator
At the heart of the kit is a 10L/min 30 PSI 12V quad diaphragm water pump and accumulator assembly, supplied pre-mounted together on a board for a neat and convenient installation.
The quad diaphragm pump design provides strong and consistent water delivery, making it ideal for supplying taps, showers and other suitable water outlets in campervans, motorhomes and van conversions.
The pump features automatic pressure-controlled operation. When a tap or shower is opened, the resulting pressure drop activates the pump automatically. Once the outlet is closed and the system reaches the required pressure, the pump switches off again.
The accumulator is installed on the outlet side of the pump and helps maintain a smoother and more consistent water supply. It also helps reduce rapid pump cycling when smaller amounts of water are being used.
Having the pump and accumulator already mounted together saves installation time and provides a tidy, organised base for the main components of your fresh water system.
Pump Specification
- Flow Rate: 10 litres per minute
- Pressure: 30 PSI
- Voltage: 12V
- Quad diaphragm pump design
- Pump & accumulator supplied pre-mounted
- Automatic pressure-controlled operation
- Accumulator helps reduce pump cycling and pressure fluctuations
- Designed to provide smooth and consistent water delivery
What's Included
Along with the pre-mounted 10L 30 PSI quad diaphragm pump and accumulator assembly, the kit includes:
- 4 x John Guest 12mm Isolation Valves
- 15 x John Guest 12mm Equal Elbows
- 1 x John Guest 12mm 3-Way Divider "Y" Piece
- 1 x John Guest Non-Return Valve
- 3 x John Guest 12mm Equal Tees
- 4 x John Guest 12mm to ½" BSP Male Adaptors – ideal for connecting compatible taps and showers
- 1 x Pipe Cutter – ideal for making clean, square cuts in the red and blue semi-rigid pipe
- 30 x Red Collet Locking Clips
- 30 x Blue Collet Locking Clips
- 60 x John Guest 12mm Pipe Inserts
- 40 x Black 12mm Pipe Securing Clips
- 15 metres John Guest 12mm Semi-Rigid Pipe – Blue / Cold
-
15 metres John Guest 12mm Semi-Rigid Pipe – Red / Hot
Why Choose a Complete Plumbing Kit?
Putting together a campervan water system individually can mean working out pipe sizes, fitting types and how many of each component you are likely to need.
Our kit provides a convenient starting point using compatible 12mm plumbing components, with the added benefit of a pre-mounted 10L 30 PSI quad diaphragm pump and accumulator assembly.
This gives you the core components required for a pressurised fresh water installation while still providing the flexibility to adapt the system to the individual layout of your vehicle.
The kit is suitable for a wide variety of campervan and motorhome conversions and can easily be expanded with additional John Guest 12mm fittings where required.
Please Note
Every van conversion is different and the exact number and type of fittings required will depend on the layout of your water system, tank position, appliances and number of outlets.
This kit has been designed to provide the core components commonly required for an installation, but additional fittings or pipework may be required for some conversions.
Share
Frequently Asked Questions
The right kit will depend mainly on the size of your conversion, the length of your pipe runs and the number of water outlets you intend to install.
A smaller camper with a simple sink installation will generally require fewer fittings and less pipework, while a larger campervan or motorhome with a kitchen sink, shower, washbasin, toilet and hot water system is likely to require one of the larger kits.
Our kits increase in size by providing additional pipework, elbows, tees, isolation valves, pipe inserts and installation accessories. If you're unsure, it is often useful to sketch out your proposed plumbing layout and count the approximate number of fittings and metres of pipe required.
L/min means litres per minute and describes the maximum flow rate of the pump.
A higher L/min rating means the pump is capable of delivering a greater volume of water. This can be useful in larger installations, particularly where a shower is fitted or more than one water outlet may be used.
PSI refers to the water pressure produced by the pump.
It is important to choose a pump pressure that is compatible with the equipment installed in your water system. Always check the maximum recommended pressure for components such as your water heater before selecting a pump.
An accumulator is fitted on the outlet side of the water pump and stores a small amount of pressurised water.
This helps provide smoother water delivery and can reduce rapid pump cycling when a tap is only partially opened or a small amount of water is being used.
The water pump is normally installed between the fresh water tank and the rest of the pressurised water system.
A typical arrangement is:
Fresh Water Tank → Filter/Strainer → Water Pump → Accumulator → Hot & Cold Water System
Always follow the installation instructions supplied with your chosen pump and other water system components.
Yes. The supplied John Guest pipe inserts should be fitted into the ends of the semi-rigid pipe before connecting it to the appropriate push-fit fitting.
They support the pipe at the connection and form part of the correct installation of the system.
The locking clips fit behind the collet on compatible John Guest push-fit fittings and help prevent the collet from being accidentally depressed and the pipe being released.
Red and blue clips are included so they can also be used to identify the hot and cold sides of the water system.
Isolation valves allow individual parts of the water system to be shut off without necessarily draining or disabling the complete installation.
Depending on your plumbing layout, they can be particularly useful around components such as water heaters, taps, showers or other appliances that may need to be isolated for servicing or maintenance.
A non-return valve allows water to travel in one direction while helping to prevent it from flowing backwards through the pipework.
Where it should be positioned will depend on the design of your individual water system.
The kits contain the core 12mm pipework, fittings and pump/accumulator components commonly required when building a campervan water system.
Every conversion is different, however, and additional fittings may be required depending on your fresh water tank, water heater, taps, shower, toilet and overall plumbing layout.
Can't find the answer you're looking for?
Give our technical team a call on 01271 611015 (Option 2) and we'll be happy to help.