Ukukhethwa kwezinto eziphathekayo kunye neempawu zokusebenza kweevalve zensimbi ezingenasici
ivalve yensimbi engenasici luhlobo lwevalve eyenziwe ngezinto zetsimbi, ngenxa yokumelana nokugqwesa kwayo, amandla aphezulu obushushu kunye nokumelana ne-oxidation, esetyenziswa kakhulu kwi-petroleum, imichiza, isinyithi, ukwakhiwa kunye namanye amashishini. Th...
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