Iimveliso
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I-Diameter Enkulu yoMbane yeeValuvu zebhabhathane zeFlange
Umsebenzi wevalve yebhabhathane yombane uza kusetyenziswa njengevalve yokusika, ivalve yokulawula kunye nevalve yokukhangela kwinkqubo yombhobho. Ikwafanelekile kwezinye iimeko ezifuna ukulawulwa kokuhamba. Yiyunithi yokubulawa okubalulekileyo kwintsimi yolawulo oluzenzekelayo lweshishini.
