2-Stage RV Ultrafiltration System for Bacteria, Sediment, & Chlorine

4 GPM Ultrafiltration RV Water Filter System – Microscopic filtration (0.02 micron) removes microplastics, bacteria, viruses, sediment, and other tiny particulates. Makes non-potable water potable. Flushable membrane has extra long filter life (3 – 5 years) - no other filters to replace.

The Premiere ultrafiltration RV water filter system (PS-500-RV) provides clean, filtered water for your entire RV, camper, or motorhome. It installs in-line before water enters your RV. It has a 0.02 micron ultrafiltration (UF) membrane that removes particulates and solids like microplastics, bacteria, viruses, protozoa, sediment, and other particles on a microscopic level. The 5 micron activated carbon block finishing filter removes chemicals like chlorine, benzene, radon, trihalomethane compounds, pesticides, and other man-made chemicals to improve the taste and odor of your water.

Ultrafiltration operates smoothly at low pressure; no pump or electricity required. This system produces water on demand with an outstanding flow rate of up to 4 gallons per minute. Enjoy peace of mind that this system will provide ultrafine filtration when you’re in places with unknown water quality (as some campsites and water sources may be).

Innovative feature lets you easily backflush (clean) the UF membrane when it gets filled with contaminants…you can’t do this with other filters or membranes which need to be replaced when clogged. Replace the UF membrane once every 3 – 5 years, and replace the carbon filter once per year.

Maintains naturally occurring minerals for health and taste.

Stage 1: Ultrafiltration Membrane (0.02 Micron)

• Powerful Filtration: Removes microplastics, bacteria, viruses, cysts, algae, sediment, lead particulates, and more down to 0.02 microns.
• Flushable Design: Simply turn the valve to clean the membrane and extend its life up to 5 years.
• Environmentally Friendly: No chemicals or wastewater—saves water and reduces waste.
• Durable & Reliable: Delivers constant water quality at up to 8 GPM without electricity.

Stage 2: Carbon Filter (Choose standard or with scale inhibitor - select above the add to cart button).

• Chemical Reduction: Removes chlorine, chloramine, VOCs, pesticides, and other contaminants.
• Scale Protection (optional): Prevents limescale buildup and corrosion using Siliphos® technology.
• Improved Taste & Odor: Coconut shell carbon enhances water taste and removes odors.
• Eco-Friendly: Made from renewable, high-hardness coconut shell carbon for efficient filtration.

Key Benefits

• Cost-Effective: Long filter life saves time and money—replace carbon annually and membrane every 3-5 years.
• Easy Maintenance: Flush the UF membrane with a simple valve operation in seconds.
• On-Demand Filtration: Works without electricity or pumps, providing clean water anytime.
• RV-Friendly: Perfect for RVs, campers, trailers, and tiny homes.

Enjoy safe, clean, and fresh-tasting water wherever you go with this advanced and efficient ultrafiltration system!

• Size: 20″ W X 14″ H X 11″ D
• Flow rate: up to 4 gallons per minute (depends on your incoming water pressure)
• This system has 3 ports that require connection: inlet, outlet, and membrane backflush. For the flush port (membrane backflush), this system should be installed near a drain, bucket, or waste water outlet to send the backflush water
• Plumbing connection size: 1″

Special notes:

1. Total dissolved solids (TDS): This product is NOT recommended for water with a high total dissolved solids (TDS) level (i.e.,over 500 ppm), or if you wish to reduce/remove TDS. The ultrafiltration process preserves healthful minerals (minerals make up TDS). If you have a TDS level above 500 ppm or wish to reduce/remove your TDS level, please keep in mind that only reverse osmosis or deionization will reduce and remove TDS in water. Read about total dissolved solids.
2. Taste: If you want to achieve “tasteless” water that is free from minerals and TDS, (i.e., how some bottled water tastes – or doesn’t taste, rather) you will want to consider reverse osmosis because ultrafiltration preserves healthful minerals and doesn't reduce or remove TDS, which can contribute to how your water will taste.
3. Membrane life may vary based on water quality, water usage, flow rate, inlet line pressure, how well it's been maintained and flushed, etc. which may require more frequent replacement.
4. Flow rate may vary depending on water pressure, water temperature, local water conditions, and how full the membrane is.
5. Additional parts may be need: Since plumbing configurations can vary, you may need to supply additional parts/adaptors in order to connect this system to your plumbing.
6. Water softeners: Install the PS-500-RV before any water softeners that use sodium (salt). This is because some water softeners make hard water “soft” by replacing the calcium and magnesium with sodium. These high levels of sodium break down the membrane so therefore this system should be installed before any softener.
7. Clean water pressure storage tank: You may want to consider a pressure storage tank which installs on the outlet side of the system. A pressure storage tank stores clean water to flush the membrane with filtered water; without a pressure storage tank the membrane is flushed with unfiltered water which could shorten the membrane lifespan. A pressure storage tank is highly recommended if you have colloidal issues and/or high turbidity (high NTU or SDI level). A pressure storage tank is not included (we don’t sell them), and they’re available at most plumbing or well water supply stores (get a 10 or more gallon one). If you already have a pressure storage tank that you plan to use, please ensure it has previously only been used as a clean water pressure storage tank and that it is completely clean and sterilized.

The ultrafiltration membrane should be flushed on a regular basis to ensure longest membrane life. To flush the membrane, simply turn the valve and leave open for up to 15 seconds to fully flush the membrane. A small amount of water will be expelled while the valve is open – it may be helpful to have a tub or bucket to capture this water.

How often you flush the membrane will depend on your water conditions and water usage. Flush the ultrafiltration membrane at least once per month; some users may find they need to flush it a few times a month, weekly, or even daily.

In general, you will know it is time to flush the membrane when there is a consistent, noticeable drop in water pressure. At minimum, it still should be flushed at least once per month even if you do not notice any drop in water pressure.

The ultrafiltration membrane (PS-500-MEM) should be replaced once every 3 – 5 years.