Valavu ya Chipata cha Matope

Ma valve a zipata za matope ndi zipata zolimba, tsinde lokwera, ma valve a zipata okhala ndi zisindikizo zolimba, ma valve awa adapangidwa motsatira muyezo wa API 6A. Amagwiritsidwa ntchito makamaka pa matope, simenti, kusweka ndi ntchito yamadzi ndipo ndi osavuta kugwiritsa ntchito komanso osavuta kusamalira.