Pali mitundu yambiri ndi mitundu yovuta ya mavavu, makamaka kuphatikizapo ma valve a zipata, ma valve a globe, ma valve othamanga, ma valve a butterfly, mavavu a pulagi, ma valve a mpira, ma valve amagetsi, ma valve a diaphragm, ma valve cheke, ma valve otetezera, ma valve ochepetsera mphamvu, misampha ya nthunzi ndi mwadzidzidzi. ma valve otseka, etc. , ...
Werengani zambiri