Plenty River PRC4 Inline Caravan Water Filter Kit – 1 Micron Dual-Stage Carbon Filter for Caravan, RV, Camper Trailer & Motorhome
Compact High-Performance Water Filtration for Caravans, RVs & Off-Grid Living
The Plenty River PRC4 Inline Water Filter Kit is a premium compact water filtration system designed specifically for caravans, RVs, camper trailers, motorhomes, boats and small kitchens.
Designed to connect directly inline between your tap and caravan water tank, the PRC4 provides clean, great-tasting water wherever your travels take you.
Installation takes less than a few minutes thanks to the included standard ½” garden hose fittings, making it the ideal portable filtration solution for caravanning, off-grid camping and remote travel.
Engineered for reliability in harsh outdoor conditions, the PRC4 features a 1-micron dual-stage filtration cartridge manufactured in the USA, helping reduce sediment, chlorine, taste, odour, algae and organic contaminants for safer, better-tasting drinking water.
Whether you're filling your caravan water tank, camper trailer, boat or off-grid cabin system, the PRC4 helps ensure the water you drink is clean, fresh and filtered.
Advanced Multi-Stage Filtration Technology
The PRC4 filter cartridge uses a multi-layer filtration system designed to progressively remove contaminants while maintaining strong water flow.
Stage 1 – Woven Stainless Steel Mesh Screen
Water first passes through a woven stainless steel mesh screen which captures larger particles such as dirt, sand, rust and sediment.
This protective layer helps prevent blockages and extends the lifespan of the filtration media inside the cartridge.
Stage 2 – Granulated Coconut Carbon
Next, water flows through a high-quality granulated coconut shell activated carbon layer.
This stage effectively reduces chlorine, unpleasant taste and odours, improving the flavour and smell of your drinking water.
Stage 3 – Composite Filtration Shell
The final stage passes water through a dense composite filtration shell made from multiple proprietary filtration materials.
This layer slows water flow slightly to increase contact time, improving contaminant reduction and providing deeper filtration for cleaner drinking water.
Designed for Caravan & RV Water Systems
The PRC4 Inline Filter Kit is purpose-built for use with caravan water tank filling systems.
Simply connect the filter between your tap and caravan hose and enjoy filtered water wherever you travel.
Ideal applications include:
• Caravans
• Camper trailers
• Motorhomes
• RVs
• Boats
• Off-grid cabins
• Rainwater collection systems
• Portable camping setups
Key Features
✔ 1 Micron Filtration – captures fine sediment and particles
✔ Dual-Stage Carbon Filtration – improves taste and odour
✔ Reduces chlorine, rust, sediment, algae and organic contaminants
✔ Compact inline design for caravans and RVs
✔ High flow rate up to 20L per minute
✔ Standard ½” garden hose fittings for easy installation
✔ Portable and lightweight – ideal for travel
✔ Made with high-quality USA filter cartridge
Technical Specifications
Model: PRC4
Micron Rating: 1 micron
Filtration Capacity: 11,356 litres
Connection: ½” Garden Hose
Maximum Flow Rate: 0 – 20 litres per minute
Operating Temperature: 2°C – 38°C
Operating Pressure: 200 – 860 kPa
Quick & Easy Installation
Setting up the PRC4 filter takes only minutes.
1. Prepare your hoses
Park your caravan and ensure the water tank inlet is accessible.
Connect your garden hose to the water supply tap.
2. Connect the inlet hose
Attach the hose from the tap to the IN side of the filter (white cap side) using the standard ½” garden hose fitting.
3. Connect the outlet hose
Attach a second hose to the OUT side of the filter.
Connect this hose to your caravan or motorhome water tank inlet.
4. Turn on the water supply
Slowly turn on the tap and allow the filter to fill.
Check all fittings for leaks and tighten if necessary.
5. Flush the filter
Before first use, run water through the filter for 2–3 minutes to remove carbon dust.
Flush until water runs clear.
6. Fill your tank
Once flushed, continue filling your caravan or motorhome tank as normal.
After Use & Storage
• Turn off the water supply
• Release pressure by disconnecting one hose
• Shake out excess water from the filter
• Store in a cool shaded place away from sunlight
• Protect from freezing temperatures
Important Operating Notes
• Use with cold water only (2°C – 38°C)
• Designed for potable water sources only
• Replace cartridge when flow reduces or taste/odour returns
• Filtration performance depends on water quality and operating conditions
Why Choose Plenty River?
Plenty River has been part of the caravan plumbing industry for over 25 years.
With decades of experience supplying caravan water systems, plumbing fittings and filtration solutions, we understand the unique challenges faced by travellers and off-grid adventurers.
Our products are designed specifically for real caravan use — tough conditions, remote travel and unpredictable water sources.
We focus on:
• Reliable filtration technology
• Practical caravan-ready designs
• Easy installation systems
• Long-lasting performance
When you choose Plenty River, you're choosing a brand built by people who know caravan plumbing and understand clean water on the road matters.