Valve ea sefefo ke valve e sa kgutliseng e mofuta oa flap e sebelisetsoang ho ntsha likhoerekhoere ka holim'a leoatle. E hokahantsoe le phaephe ea mobu pheletsong e 'ngoe 'me pheletso e 'ngoe e lehlakoreng la likepe e le hore likhoerekhoere li tsoe ka holim'a leoatle. Kahoo e ka fetoloa feela nakong ea libaka tsa ho omisa.
Ka hare ho flap ea valve ho na le e khomaretsoeng ho boima ba counter, le bloko ea ho notlela. Boloko ea ho notlela ke karolo ea valve e laoloang le ho tsamaisoa ke lebili la letsoho la kantle kapa actuator. Morero oa bloko ea ho notlela ke ho tšoara flap sebakeng seo qetellong se thibelang phallo ea mokelikeli.
Hang ha phallo e qala, mosebelisi o tlameha ho kgetha hore na o bula boloko bo notlellang, kapa o bo boloka bo kwetswe. Haeba boloko bo notlellang bo kwetswe, mokelikeli o tla dula o le kantle ho valve. Haeba boloko bo notlellang bo butswe ke mosebelisi, mokelikeli o ka phalla ka bolokolohi ka lesoba. Kgatello ya mokelikeli e tla lokolla lesoba, e le dumelle ho tsamaya ka hara sehokelo ka lehlakoreng le le leng. Ha phallo e emisa, lesoba le tla kgutlela boemong ba lona bo kwetsweng ka bohona.
Ho sa tsotelehe hore na boloko ba ho notlela bo teng kapa tjhe, haeba phallo e kena ka sehokelong, phallo ya morao e ke ke ya kgona ho kena ka valve ka lebaka la boima bo sa lekanang. Tshebetso ena e tshwana le ya valve ya ho hlahloba moo phallo ya morao e thibelwang e le hore e se ke ya silafatsa sistimi. Ha mohele o theotswe, boloko ba ho notlela bo tla tiisa lesoba hape boemong ba lona bo haufi. Lesoba le tiileng le arola phaephe bakeng sa tlhokomelo haeba ho hlokahala
| Karolo ea Karolo. | Thepa | ||||||
| 1 - 'Mele | Tšepe e Lahliloeng | ||||||
| 2 - Bonete | Tšepe e Lahliloeng | ||||||
| 3 - Thibelo | Koporo | ||||||
| 4 - Sehokelo | Koporo | ||||||
| 5 - Nate | Tšepe, | ||||||

Valve ea sefefo ke valve e sa kgutliseng ya mofuta wa fap e sebediswang ho ntsha dikgwerekgwere ka hodima lewatle, e hokahantswe le phaephe ya metsi pheletsong e nngwe mme pheletso e nngwe e lehlakoreng la dikepe e le hore dikgwerekgwere di fete. Kahoo e ka ntjhafatswa feela nakong ya ho omisa di-drydock.
Ka hare ho lesoba la valve ho na le moo le hoketsweng ho boima ba khaontara, le boloko bo notlelang. Boloko bo notlelang ke karolo ea valve e laoloang le ho tsamaisoa ke lebili la letsoho la kantle kapa actuator. Morero oa boloko bo notlelang ke ho tšoara lesoba sebakeng seo qetellong se thibelang phallo ea mokelikeli.
Hang ha o qala, o lokela ho kgetha hore na o bula boloko ba ho notlela, kapa o bo boloke bo kwetswe. Haeba boloko ba ho notlela bo kwetswe, motlakase o tla dula o le kantle ho valve, haeba boloko ba ho notlela bo butswe ke opereishene, motlakase o ka phalla ka bolokolohi ka hara lesoba. Kgatelelo ya motlakase e tla lokolla lesoba, e le dumelle ho tsamaya ka hara lesoba ka lehlakoreng le le leng. Ha phallo e emisa, lesoba le tla kgutlela boemong ba lona bo kwetsweng ka bohona.
Ho sa tsotelehe hore na boloko ba ho notlela bo teng kapa tjhe, haeba boloko bo kena ka sehokelong, boloko ba ka morao bo ke ke ba kgona ho kena ka valveng ka lebaka la boima bo sa lekanang. Tšobotsi ena e tshwana le ya valve ya ho hlahloba moo phallo ya morao e thibelwang hore e se ke ya silafatsa sistimi. Ha mohele o theotswe, boloko ba ho notlela bo tla tiisa boloko hape sebakeng sa bona se kwalletsweng. Lebanta le tiileng le arola phaephe bakeng sa tlhokomelo haeba ho hlokahala.
| DN | n1×Φd1 | Hcd1 | ΦD1 | n2×Φd2 | Hcd2 | ΦD2 | ΦD | L1 | H1 | H2 | ΦR | Kg |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 50 | 4 × 18 | 125 | 165 | 8×18 | 160 | 200 | 70 | 180 | 90 | 260 | 140 | 12 |
| 65 | 4 × 18 | 145 | 185 | 8×18 | 180 | 220 | 85 | 200 | 100 | 270 | 140 | 14 |
| 80 | 8×18 | 160 | 200 | 8×18 | 210 | 250 | 100 | 215 | 108 | 290 | 140 | 20 |
| 100 | 8×18 | 180 | 220 | 8×22 | 240 | 285 | 130 | 250 | 130 | 305 | 140 | 25 |
| 125 | 8×18 | 210 | 250 | 8×22 | 270 | 315 | 158 | 290 | 152 | 330 | 160 | 36 |
| 150 | 8×22 | 240 | 285 | 8×22 | 295 | 340 | 190 | 330 | 176 | 260 | 160 | 43 |
| 200 | 8×22 | 295 | 340 | 12×22 | 350 | 395 | 240 | 425 | 180 | 350 | 160 | 72 |