A convenient open-closed valve prevents waste. This eliminates the all too familiar gurgling, bubbling, gushing and wet shoes experienced when trying to fill a fresh water holding tank with a regular hose. Believe it or not, some campgrounds have water pressures so high it can burst a hose or even the plumbing in the camper. An easy remedy is to always carry and use a pressure regulator. They come in several styles but the illustration is the easiest to use.
Pressure is preset at a safe level and it just screws in between faucet and the hose.
A water hose can really influence the taste of your drinking water. The hose with the missing metal connector slips into the tapered rubber section of the Water Thief for a tight fit. It won't wedge tight enough to prevent leaking, so you will have to hold it tight with your hands. If you plan on leaving your hose hooked to the park water supply, a Y- connector is invaluable. Not only does it allow your neighbor to easily get water without disconnecting your hose, but it also allows you access to wash your hands or fill the pets bowl without disconnecting the hose.