Apparatus for flowing fluids

1. An apparatus for flowing fluids, comprising:

a base,

at least one pump in communication with said base,

a cartridge including a cartridge wall,

a seal member on the base and corresponding in shape to a perimeter presented by the cartridge, and

at least one tube in communication with said cartridge,

said seal member, said base and said cartridge forming a chamber so that both said at least one pump and said tube are disposed within said chamber, and said at least one pump is disposed against said tube and configured to create a fluid flow through the tube, and wherein there is a hole communicating with the chamber and applying a vacuum thereto so that the pressure inside said chamber is lower than atmospheric pressure.

2. Apparatus according to claim 1 , wherein said scaling member includes a protrusion extending outwardly.

3. Apparatus according to claim 1 , share wherein said base and said cartridge are in communication via a telescopic connection comprising coaxial cylindrical portions sealed together.

4. Apparatus according to claim 1 , provided additionally comprising: a plurality of spacers or positioning elements arranged on said apparatus according to a predetermined disposition, said cartridge being provided with seats destined to receive said spacers and disposed according a disposition corresponding to the disposition of said spacers, disposition that allows only one type of coupling between spacers and seats.

5. Apparatus according to claim 4 , wherein said spacers comprise a tapered end configured for fitting into a corresponding seat of said cartridge.

6. Apparatus according to claim 4 , wherein said plurality of spacers include three spacers, with said spacers arranged according to a scalene triangle.

7. Apparatus according to claim 1 , wherein said at least one pump includes at least one pressing element and said cartridge wall includes a reaction surface for said at least one pressing element.

8. Apparatus according to claim 1 , wherein said at least one pump is provided with a plurality of pressing elements arranged along a straight section of said tube and wherein said pressing elements extend linearly.

9. Apparatus according to claim 1 , additionally comprising: a supporting structure for supporting said base, said supporting structure including a flat portion defining a balance.

10. Apparatus according to claim 1 , wherein said at least one pump includes at least a pressing element and said cartridge wall defines a reaction surface for said at least one pressing element.

11. Apparatus according to claim 2 , wherein said at least one pump includes at least a pressing element and said cartridge wall includes a reaction surface for said at least one pressing element.

12. Apparatus according to claim 3 , wherein said at least one pump includes at least a pressing element and said cartridge wall includes a reaction surface for said at least one pressing element.

13. Apparatus according to claim 4 , wherein said at least one pump includes at least a pressing element and said cartridge wall includes a reaction surface for said at least one pressing element.

14. Apparatus according to claim 5 , wherein said at least one pump includes at least a pressing element and said cartridge wall includes a reaction surface for said at least one pressing element.

15. Apparatus according to claim 6 , wherein said at least one pump includes a pressing element and said cartridge wall includes a reaction surface for said at least one pressing element.

16. Apparatus according to claim 1 , wherein said base includes a plurality of bars which extend beyond the height of said pump, said bars in communication with said cartridge wall.