Below are photos of our new barn spigot and outdoor hydrant. They both have special qualities that anybody using them needs to know about and here's a note to explain how they work and how to properly operate them.
The faucet/spigot in the aisle of the barn has a "frostless" shut-off handle (the green handle shown below). The handle operates a valve which is located deep inside the wall. This keeps the valve from freezing. When you turn the faucet off, the water that was in the pipe will drip for about thirty seconds. You might think the faucet is not fully shut off and be tempted to turn the handle tighter to stop the dripping. DO NOT TURN THE HANDLE TIGHTER TO STOP DRIPPING. To avoid damage to the valve, please only turn the handle as far as needed to shut off the forceful stream. The handle is marked with a small piece of white tape which should be positioned at the top when the spigot is fully shut off. You will notice that the water will stop dripping after about thirty seconds. We usually have a small bucket located under the spigot to catch this small amount.
The outdoor hydrant (with the orange handle pictured below) also has a "frostless" feature. When the handle is shut off (in the down position), the water in the top eight feet of pipe drains out into an underground gravel pit. Therefore, to prevent freezing in the winter, you must disconnect the hose when you shut this hydrant off. Also, whenever the hose is in the big water tank, or any water tank, the hose must be disconnected when shutting off the hydrant so water doesn't siphon back out and fill the underground pit.