1. Thesenotlolo sa valveho bonolo ho kenya le ho sebetsa, 'me ho bonolo ho e sebelisa.E entsoe ka ho khetheha ho tloha lipoleiti tsa tšepe tse sa hloekang tsa boemo ba indasteri le lisebelisoa tse tala tsa polyester.

2. E tšoarellang.Sebopeho se setle sa ho koala leino la shark e tšoeu,

3. Letlapa la valve ea heke le kopane haholoanyane ebile le tiile.

4. Ka mesebetsi e feletseng, e ka notlela li-valve tsa heke tsa litlhaloso tse tloaelehileng le mehlala ka li-angles tse oblique.

5. Moralo o bonolo oa moralo oa letsoho, ntlha ea tšireletso e ka ntlafatsoa ka mokhoa o nepahetseng haholoanyane.

6. Ka ho hanyetsa mocheso o motle, ho hanyetsa kutu le ho hanyetsa ho qhibiliha, e ka sebelisoa libakeng tse sa tšoaneng tsa tlhaho tse feteletseng.

Tšebeliso ea mantlha ea lihlahisoa tsa senotlolo sa li-valve: 1.Li-valve tsa butterflye sebelisoang litsing tsa oli e tala, limela tsa lik'hemik'hale le lipeipi tsa tlhahiso ea indasteri.

2. E sebelisoa bakeng sa tšireletso li-valve tsa serurubele tsa tsamaiso ea lipeipi mafapheng a 'muso joalo ka boenjiniere ba ho boloka metsi, boenjiniere ba matla a motlakase, le boenjiniere ba masepala.

3. E sebelisetsoa ho sireletsa tšireletso ea li-valve tsa serurubele tsamaisong ea liphaephe tse kholo le tse mahareng tse kang indasteri ea meriana, indasteri ea pampiri, tšepe, lino tse tahang, joalo-joalo.

4. Li-valve tsa lirurubele tse sebelisoang tlhokomelong ea polokeho ea liphaephe tse kang indasteri ea kaho, libaka tsa bolulo tsa litšebeletso tsa khoebo, ho kenya lipeipi tsa matlo a matlo le ho khabisa ka hare.

5. E sebetsa litsamaisong tse ling tsohle tsa liphaephe, joalo ka li-valve tsa serurubele le lisebelisoa tsa tšireletso.