Some Information about Plumbing and Plumbing tools
A chemigation valve is an apparatus designed to protect water supplies from agricultural chemicals used during chemigation, the application of chemicals such as fertilizers and pesticides through irrigation water. Most chemigation valves consist of a spring-loaded check valve, a low pressure drain, an air and vacuum relief valve, and an injection port for introducing the chemicals downstream of the check valve. Many chemigation valves also have a 4 inch inspection port so that a person can reach inside and feel if the check valve is still functional. Some governments require the use of two chemigation valves installed in series if hazardous chemicals are to be injected.
Some Plumbing DOs and DON'Ts
DO - If you can't put heat in an area where water pipes are, use
an electric heat tape.
DO - If your kitchen sink is located on an outside wall, leave
cupboard doors open in severe cold weather.
DO - Shut off all outside faucets in cold weather if they are
not of the frost proof type.
DO - If you are closing up a home in the wintertime and there
will be no heat in the home, shut off the water supply at the
street or in the basement.