Zida zoperekera madzi nthawi zonse zimagwiritsa ntchito madzi a pneumatic. Imagwiritsa ntchito thanki yotsekedwa ndipo imagwiritsa ntchito{1}kuthamanga kwambiri kwa gasi ndi madzi mu thanki kuti madzi azitha kupezeka. Njira yeniyeni yogwiritsira ntchito ndi yakuti pampu yamadzi imakankhira madzi mu thanki kudzera mu valve yowunikira, kukakamiza mpweya mkati mwa thanki ndikuwonjezera mphamvu pang'onopang'ono. Kupanikizika kukafika pamlingo wina wapamwamba, choyezera chamagetsi chamagetsi chimangoyimitsa mpope kudzera mu kabati yolamulira. Kuthamanga kwa madzi mkati mwa zipangizo kumaposa mphamvu ya kunja kwa intaneti, ndipo madzi amaperekedwa kumadzi opangira madzi. Pamene mulingo wamadzi mu thanki ukutsikira ndipo kuthamanga kwa gasi mkati mwa thanki kumachepa mpaka kutsika pang'ono, choyezera chamagetsi cholumikizira magetsi chimayambiranso mpope kudzera mu kabati yowongolera. Izi zimabwerezabwereza, kuonetsetsa kuti madzi akupezeka mosalekeza. Ngati gasi mu thanki ndi wosakwanira, valavu yowonjezera mpweya imangowonjezera.
