Ibisobanuro bigufi:

1. Bihujwe na valve zose zimodoka kimwe nibice bikonjesha

2. Ifasha mugukuraho cores cores

3. Igizwe na cores enye zingenzi kugirango zisimbuze izakuweho mugihe ukora

4. Reams imbere muri valve

5. Ongera ukande insinga imbere no hanze

Igikoresho cya 4-inzira ya valve igikoresho cyiza cyo gukuraho / gushiraho valve cores; Ongera ukande insanganyamatsiko imbere & hanze; Imbere imbere ya valve; Amapine yerekana urushinge cyangwa gukuramo amabuye mato.