Water Gate A gate used to control the flow of water in a dam overflow. Water Hammer Noise, created by a water surge or rapid flow change of water, in a steam system. When a change of direction is reached, by water being carried along in air, both at the same velocity, it cannot smoothly turn the corner due to its mass. When it strikes the pipe, it makes a hammering noise. Water Heater Device for heating and storing water.
Heat is generated by gas, electric, or steam.
Water-holding Capacity Amount of water able to be retained in an expansion tank or other type of unit. Water Level Surface level of water. Water Mains Large diameter pipes which transport water from the plant or well to the area where it will be used, with individual lines running into the house. Water Meter Measuring device for the flow of water in a structure, usually recorded for billing purposes. Normal pressure is between 50 psi and 60 psi, and should not drop below 30 psi or rise higher than 80 psi.