RV Fresh Water Systems
Getting clean water from the campground spigot to your tap takes more than a hose. This is the whole fresh-water side of the rig: the drinking-safe hose, the regulator that keeps pedestal pressure from splitting a fitting, filters for taste and sediment, the fill and shutoff hardware, and the 12-volt pump that pressurizes everything when you're off city water. Fix one part at a time, or build the setup from scratch.
225 products
Flair-It Plastic Swivel Adapter | 1/2" PEX & Polybutylene Fitting
Flair-It Poly Coupling | 1/2" x 3/4" Water Line Fitting
Valterra Deluxe Double Hose Shut-Off | Plastic Y-Connector with Dial Valve
Watts AquaLock Push-to-Connect Elbow | 1/2" CTS, Off-White Polysulfone
Sea-Tech Hose Barb Fitting | 1/2" CTS x 1/2" HB, Quick-Connect
Valterra Anti-Siphon Valve, Removable | 1/2 in. NPT, Plastic
Diverter Valve Handle | White, OEM Replacement
Flair-It Plastic Male Adapter | 1/2 in, NPT Thread
Flair-It Plastic Male Adapter | 1/2" NPT Push-Fit Plumbing Fitting
Flair-It Poly Line Plug | 3/8 in, White
JR Products Rubber Dust Plug for City Water Check Valve | Black, Universal Fit
Valterra Blow-Out Plug | White, RV Winterizing Tool for City Water Inlet
Valterra Pistol-Grip Hose Nozzle | Plastic, Orange
Valterra Water Inlet Plug with Strap | 3/4", Black, Dust Cover
BestPEX Brass Elbow Fitting | 3/8" Barb x NPT, Copper Finish
Camco 3/4" Female Dust Cap with Lanyard | White
Valterra 3/4" Hose Cap with Strap | Black, GHT Thread
Valterra 3/8" Barbed Elbow Fitting | 90°, Black
Valterra 3/8" Barbed Tee Fitting | 3-Way Barb Connector
Ecopoly PEX Crimp Coupling | 1/2" Barb x 1/2" Barb, PSU Plastic
Flair-It Polybutylene to PEX Adapter | 3/4 in.
Valterra 1/2" Barb x 3/8" Barb Reducer Coupler
Valterra 3/8" Barbed Hose Connector | Vinyl Tubing Union Fitting, Black
Valterra 90° MPT to Barb Elbow Fitting | 3/8 in MPT x 1/2 in Barb, Black
Valterra Male Barb Adapter | 1/2in MPT x 3/8in Barb
How the RV fresh water system fits together
Two things pressurize the water in an RV: a campground spigot pushing it in from outside, or your own 12-volt pump pulling from the fresh tank when you're boondocking. Both feed the same lines to your faucets, and the parts below keep that water clean, at a safe pressure, and moving. Start with whatever you're replacing.
- Drinking Water Hoses — white and blue potable-rated hoses in coiled and straight lengths, plus the lead-free materials that keep water tasting like water.
- Hose Fittings & Adapters — city water inlets, gravity fills, Y-splitters, shutoffs, and quick-connect barbs to join it all together.
- Pressure Regulators — brass and stainless regulators that cap incoming pressure at a safe 40-60 PSI so a hot pedestal doesn't split a line.
- Water Filters — inline and canister filters with carbon and KDF media to cut chlorine, sediment, and off-tastes.
- Water Pumps — 12-volt demand pumps plus the switches, valves, and silencing kits that keep them running quiet.
This is the supply side only. The drains and holding tanks live under Sewer & Waste, tank treatments under Tank Care & Chemicals, and the fixtures themselves under Faucets, Sinks & Showers.