How to Make a Suction Pump?

Answer

The suction pump required depends on its application. Do you need this to extract air, water, or blackheads? 
A pump consists of a cylinder and a valve attached to the handle. You can make one from scratch using PVC pipe and basic supplies from a plumbing store. If you don't mind recycling, however, you can convert a bicycle pump: www.instructables.com
Q&A Related to "How to Make a Suction Pump"
1. Unscrew the top cylinder portion of your bicycle pump so that the pump handle comes all the way out. Locate the piston disk, a small cup with a lip on the end of the pump. 2. Unscrew
http://www.ehow.com/how_7947782_make-handheld-suct...
In order to get suction cups to stick I have always licked them. I know it sounds odd but just wetting them didn't work so I lick them or lick my finger and wet them and they stick.
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Have your airstone in a higher place in the water column. Deep tanks put much more water pressure on pumps, and if your tank is over 18 inches deep, you should get a pump for twice
http://answers.yahoo.com/question/index?qid=201207...
first of all the term NPSH should be clear.It is pressure which should be available at the eye of the pump impeller,so as to avoid vaporisation of liquid. Second which arises ,how
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1 Additional Answer
You can make your own suction pump using coffee jars, a bicycle pump, 3-inch diameter piping, and rubber valves and stoppers. By installing the lifts on shelves of different heights, you can control the amount of water being pumped.
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The suction pump required depends on its application. Do you need this to extract air, water, or blackheads? 
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