Self Priming Pump
November 2nd, 2009 Filed under: Uncategorized — Advertising Author
A Self Priming Pump is a pump which has been specifically designed to allow the pump to re-prime itself when under lift conditions.
These types of pumps are extremely efficient because they eliminate the need for ejector and vacuum pumps and also foot valves, which may become clogged and in turn may become impractical to use for remote or prolonged operation.
The pump is designed to self-prime and it is important to understand how this is achieved. By definition a self priming pump is a pump which can clear its passages of air if it becomes air bound and continue delivery of the pumpage without outside attention.
This is achieved by retaining a charge of liquid sufficient to prime the pump within the casing. When the pump is started a rotating impeller creates a partial vacuum ; air from a suction pipe is drawn into this vacuum and is mixed into the liquid drawn from the priming chamber. The resulting air-liquid mixture is then pumped into an air separation chamber which is in the casing. Here the air is separated from the liquid and the air is expelled out through a discharge pipe, whilst the liquid returns to the priming chamber. This action repeats itself until the air from the suction piping is expelled and replaced by pumpage and the priming has been completed.
Self priming pumps are used in many different industries and have a wide variety of applications.
Some of these industries can and use can include:
� Wastewater
� Food processing
� Automotive
� Steel
� Quarry & mining
� Petrochemical
Pumps are used to move liquids, slurries and fluids such as gases. A pump achieves this by displacing a volume by mechanical or physical action. Pumps do not create pressure, they displace fluids by causing a flow.
There are five major groups of pumps and these are;
� Direct lift
� Displacement
� Velocity
� Gravity
� Buoyancy
The efficiency of a pump is very important and pumps should be tested on a regular basis.
If you are in need of this service check out our product pages, they contain many companies that specialise in this. John Cheesman writes about Self Priming Pump. Visit the Businessmagnet product page for details and suppliers of Self Priming Pump.
