water and waste water systems chapter 5

Backflow preventer

A valve used to prevent water from flowing from one sub system to another - for example, to prevent water standing in a hose from entering the buildings water system.

Deduct meter

A device that submeter water that is used by a property, but does not flow into the sewer system ( for example, water used in cooling towers,irrigation systems,and swimming pools)so that this water can be deducted from the sewage disposal bill.

Directly fired water heater

the most commonly found type of water heater in which a fuel is burned, and heat is transferred to the water. For all fuel sources, but electricity, a source of combustion air is required; the combustion gas are set up to fuel. A directly fired water heater may have integral or separate storage tank.

Grease separators.

A device used to capture grease in waste water before it enters the sewer systems. Also called a grease trap.

Heat pump water heater. (HPWH).

A water heater that extract heat from the air with a space and the outside air and or a water source and using a refrigeration cycle and transfers, it to the water being heated.

Indirectly fired water heater.

A water heater in which team enters a coil or heat exchanger that transfers heat from the steam to the water

potability

Suitability for drinking.

Riser

A grouping of rooms in sets of two by floors and vertically within the guest room’s blocked that share piping for the supply of potable water and removable of waste.

Sanitary sewer systems.

A system that removes waste products from a facility that carries them to a sewage treatment facility

storm sewer system

A system for the disposal of rainwater ; the system makes sure that rainwater flows directly to some discharge location where the water enters a river, lake, or other draining system.

Trap

a water filled section of pipe that keeps sewer gases and odors from entering the building.

Water softening

The removal of calcium, magnesium, and iron from the water supply.