Chotsekera chitetezo cha ma valve, chomwe chimadziwikanso kuti LOTO valve lock, ndi chimodzi mwazotseka zotetezera mafakitale.Cholinga chake ndikuwonetsetsa kuti valavu ikhoza kutsekedwa kwathunthu kapena kutsegulidwa pamalo otetezeka.Kutsekedwa kwa valve kungathe kuteteza bwino mavuto a chitetezo omwe amayamba chifukwa cha misoperation ya ogwira nawo ntchito.Kugwiritsiridwa ntchito kwa loko yotetezera ma valve, makamaka kupititsa patsogolo chitetezo cha valavu, makamaka mu fakitale yamabizinesi kumalo ano, kugwiritsa ntchito LOTO lock lock kungathe kutsimikizira ntchito zopangira.