Valves are the basic gatekeeper of flow control in any piping system. When they are open, they allow flow to pass through them; when they are closed, they prevent flow from passing through them. Fittings connect two or more pipe segments so that the system can move fluids and gases, whether it’s water or fuel, water or oil, or water or oxygen.
Many people who have a sloping plot of land wonder if building on it is possible and what problems they have to face. Is it necessary to level the ground?
