yotijar RV Inlet Accessory Inlet Water Cap for Camper Marine Trailer Black.RV inlet built in water stop to prevent backflow after water is stopped, sealed water supply to reduce pollution, and supply.diameter 90mm; water pipe diameter: 20.2mm; installation screw hole spacing 85mm; screw hole diameter 5mm.The standard hose connector has a diameter of 20.2mm and can be connected to most hoses on the market.RV city inlet is suitable for refitting vehicles, tool vehicles, campers, RVs, , yachts and other places that require stable pressure to add water or add water in cities.Select the location to open a 90mm diameter round hole, and install it on the wall.RV Inlet Camper Inlet Filler Cap. Trailer RV City Inlet with Check Gate. RV City Water Inlet with Check Gate Leakproof. Inlet Replacement Easy To Install. Motorhome Inlet Water Cap Camping Marine Parts.