Safety items are a very important part of our continued well being, something simple like a vacuum breaker install at your home to protect your water supply is a must. A backflow device installed in your business is also a must we have many water protection devices that keep us healthier a sewage back water valve will keep unwanted sewage from entering your home and contaminating your environment. At your work place a eyewash system will help in an emergency when unforeseen debris enters your eye a consistent temperature in water used to wash your self will assist in purification. Even the right filter system in your home or business will improve your life a working pressure regulator will protect your home and business. Bottom Line. You are the reason these things should be in place and maintained. There are so many safety devices such as the expansion tank that you should make sure they are in place anywhere you are just like a safety belt.