Kutsekera kwa ma valve a mpira kumatseka mapaipi osiyanasiyana pogwira chogwiriracho pamalo OZIMA.Chida chathu chaching'ono chotsekera valavu mpira chidzatseka ma diameter a chitoliro kuchokera ku 1/2' mpaka 3'.Chotsekera chathu chachikulu chachitetezo cha valavu cha mpira chimatseka chitoliro chake kuchokera pa 2' mpaka 8'.Zipangizo zamakono zimasiyananso malinga ndi ntchito.Palinso zitsulo zotsekera valavu yachitsulo, koma zimatha kutsekedwa.