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A backflow prevention device is used to protect potable water supplies from contamination or pollution due to backflow . In water distribution systems, water is normally maintained at a significant pressure to enable water to flow from the tap, shower, or other fixture. Water pressure may fail or be reduced when a water main bursts, pipes ...
Pennsylvania (/ ˌ p ɛ n s ɪ l ˈ v eɪ n i ə / ⓘ PEN-sil-VAY-nee-ə, lit. ' Penn's forest country '), officially the Commonwealth of Pennsylvania [b] (Pennsylvania Dutch: Pennsylvanie), [7] is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States.
A low-flow fixture is a water saving plumbing fixture designed to achieve water savings by having a lower flow rate of water or a smaller quantity per flush. Some of these low-flow fixtures are faucets, showerheads, and toilets. In the United States a maximum water usage of conventional plumbing fixtures was federally mandated by the Energy ...
Peristaltic pump in motion. A peristaltic pump, also commonly known as a roller pump, is a type of positive displacement pump used for pumping a variety of fluids. The fluid is contained in a flexible tube fitted inside a circular pump casing. Most peristaltic pumps work through rotary motion, though linear peristaltic pumps have also been made.
Hand pump. Animation of a suction hand pump. On the up stroke of the piston the foot valve opens and suction brings water into the pump head. On the following down stroke of the piston the valve on the piston opens up and allows water to flow above the piston. On the successive up stroke of the piston water is pushed out of the outlet.
A flow check is a check valve used in hydronic heating and cooling systems to prevent unwanted passive gravity flow. A flow check is a simple flow lifted gravity closed heavy metal stopper designed for low flow resistance, many decades of continuous service, and to self-clean the fine particulates commonly found in hydronic systems from the ...
A faucet aerator can be classified on the basis of its flow rate and the type of water stream (aerated, non-aerated, spray) it produces. In general, standard-sized aerators are available with female (M22x1) or male threading (M24x1). Bathtub spouts often have a bigger diameter with a male M28x1 thread. The United States uses different thread ...
A submersible pump (or electric submersible pump ( ESP) is a device which has a hermetically sealed motor close-coupled to the pump body. The whole assembly is submerged in the fluid to be pumped. The main advantage of this type of pump is that it prevents pump cavitation, a problem associated with a high elevation difference between the pump ...