| http://www.w3.org/ns/prov#value | - Thus, a conventional pump comprises the suction bell connected with a reservoir, such as a bottle, and with a source of negative pressure for causing a sufficient but not overly strong and preferably easily controllable suction; typically, such suction is defined by the ambient atmospheric pressure minus the negative pressure or "suction pressure of, say, 0.01 to 0.3 bar.
|
