Kusankha mavavu agulugufe pamtundu wina uliwonse wa ma valve owongolera, monga mavavu a mpira, ma valve otsina, ma valve a thupi, ma globe ma valve, ma valve a piston, ndi ma angle body valves, ali ndi maubwino angapo. 1.Mavavu a butterfly ndi osavuta komanso othamanga kutsegula. Kuzungulira kwa 90 ° kwa chogwirira ntchito ...
Werengani zambiri