The RV city water inlet is an easy way to provide pressurized water into your RV unit. The RV city water inlet on the outside of the RV makes it possible to hook up to an outside source, such as a campground or residential faucet using a hose, and have pressurized water running on the inside.
To hook up to the RV city water inlet you must first remove the outside cap and get a hose that is designed for drinking water. A specialized RV drinking water hose is drinking water safe and made of materials approved by the National Sanitation Association, which contains no toxins rubber or lead. Attach the hose to the unit directly or you can use an elbow connector to make it easier to get connected and disconnected to the RV city water inlet.
Once connected to the RV city water inlet, pressurized water will come into your unit bypassing the water pump. This provides pressurized water to faucets, showers and toilets. On newer models with an enclosed service center, you can also fill the freshwater tank by switching the valve inside near the tank.
Be careful of the pressure when connecting to the RV city water inlet, because some campgrounds use wells with a pump and can have high pressure levels. Even outside garden hoses can have high pressure levels. It may be necessary to connect a regulator to the hose before attaching it to the RV unit. This will keep the water pressure coming into your RV around 40 to 60 psi. Another suggestion is to attach a filter to remove any sediment and water contaminants before the water enters the unit.
Having pressurized water coming into your RV will give you the water you need to cook, take showers and use the bathroom. Definitely one of the benefits to connecting to a water source while taking an RV vacation.
Another video from RV Repair Club shows you how to install a quick release adapter to your RV city water inlet to make it easier to connect to water sources.