Multi-Million/Billionaires Owning Farms
Society & Culture3 mins ago
No best answer has yet been selected by sphinx. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.It can either be a mechanical suction pump, usually a rotary vane or receporicating piston low pressure type.
Or a constant low pressure vacuum device, like a syringe with a weight on the plunger, pulling instead of pushing.
http://narang.com/suction_machines_units/suction_machine s.php
Sorry, we can't find any related questions. Try using the search bar at the top of the page to search for some keywords, or choose a topic and submit your own question.