Thepa ea phepelo ea metsi e seng mpe ke mofuta oa lisebelisoa tsa phepelo ea metsi tse hatelletsoeng ka kotloloho, tse hokahaneng ka kotloloho le marang-rang a phepelo ea metsi a masepala ke setsi sa phepelo ea metsi se hatelletsoeng, 'me se fana ka metsi ka tatellano ho latela khatello e setseng ea marang-rang a lipeipi tsa masepala ho netefatsa hore khatello ea marang-rang ea lipeipi tsa masepala ha e tlase ho ts'ireletso e behiloeng (e ka ba 0 khatello ea khatello e lekanyelitsoeng, mme ha e le ka tlase ho 0).
Ntho ea mantlha ea marang-rang a marang-rang a khatello e phahameng (ha ho khatello e mpe) lisebelisoa tsa phepelo ea metsi ke mokhoa oa ho thibela khatello e mpe nakong ea ts'ebetso ea sistimi ea phepelo ea metsi e hatelletsoeng, ho felisa phello ea ts'ebetso ea yuniti ho marang-rang a lipeipi tsa masepala, le ho fumana phepelo ea metsi e bolokehileng, e tšepahalang, e tsitsitseng le e tsoelang pele molemong oa ho netefatsa hore ts'ebeliso ea metsi ea basebelisi ba haufi ha e amehe.
Thepa ea phepelo ea metsi e se nang khatello e mpe e boetse e tsejoa e le sesebelisoa sa phepelo ea metsi sa pipe network superimposed pressure superimposed. Haholo-holo ho na le lisebelisoa tsa phepelo ea metsi tsa mofuta oa tanka tse se nang khatello e mpe le mofuta oa lebokose la lisebelisoa tsa phepelo ea metsi tse se nang khatello e mpe 'marakeng.
Sesebediswa sa phepelo ya metsi se nang le kgatello e sa tsitsang se hoketswe ka kotloloho le marangrang a dipeipi tsa masepala, mme se fana ka metsi ka tatellano ho latela kgatello e setseng ya marangrang a dipeipi tsa masepala.
(1) Phepelo e feto-fetohang ea phepelo ea metsi ka khatello e sa fetoheng: ha molumo oa phepelo ea metsi oa marang-rang a lipeipi tsa masepala o le kholo ho feta ts'ebeliso ea metsi ea mosebelisi, tanka e sa khaotseng ea mofuta oa khatello e mpe ea lisebelisoa tsa phepelo ea metsi e fana ka metsi ka maqhubu a feto-fetohang le khatello e sa fetoheng. Ka nako ena, metsi a mangata a hatelitsoeng a bolokiloe ka tanka ea ho phalla kamehla.
(2) Ho felisoa ha khatello e mpe: ha khatello ea ho hokahanya pakeng tsa marang-rang a liphaephe tsa masepala le tanka ea metsi e tsitsitseng e theoha ka lebaka la keketseho ea metsi a sebelisoang ke basebelisi, ha khatello e theoha ka tlas'a khatello e lekanyelitsoeng ea 0, khatello e mpe e tla thehoa ka tanka ea phallo e tsitsitseng, valve e kenang ea "vacuum suppressor" e tla buleha, 'me sepakapaka se tla kena ka tanka e tsitsitseng ea phallo. Ka nako ena, tanka ea ho phalla e tsitsitseng e lekana le tanka ea metsi e bulehileng e nang le metsi a sa lefelloeng. Khatello e tšoana le sepakapaka, 'me khatello e mpe e felisoa. Ha boemo ba metsi bo theohela ho boleng bo behiloeng, molaoli oa boemo ba mokelikeli o fetisetsa letšoao la taolo tsamaisong ea taolo ea khabinete ea ho fetola phetoho ho laola mochine o hatellang ho emisa ho sebetsa le mosebedisi ho emisa phepelo ea metsi; Ha tšebeliso ea metsi ea mosebedisi e fokotseha, boemo ba metsi ka tanka ea phallo e tsitsitseng boa phahama, 'me khase e ntšoa ho valve ea ho ntša metsi ea vacuum suppressor. Ka mor'a hore khatello e khutlele ho tloaelehileng, mochine oa khatello o tla qala hape ka bohona ho tsosolosa phepelo ea metsi.
(3) Ts'ebetso ea ho koala le ho koala metsi: ha marang-rang a lipeipi tsa masepala a khaotsoe, setsi sa khatello e tla khaotsa ho sebetsa tlas'a taolo ea molaoli oa boemo ba mokelikeli. Ka mor'a hore metsi a marang-rang a lipeipi tsa masepala a tsosolosoe .