Lapho umphini bi Ohlangothi liyadingeka olawula phambili flow futhi kuvimbele backflow, NSEN metal ohlezi bi Ohlangothi butterfly valve kukhona inketho yakho. Lapho ukubekwa uphawu kwabangu okhetha kwensimbi ngokugcwele isakhiwo sensimbi, kulolu chungechunge anesizotha isicelo Amandla Hlela, Sokushisisa, Iwoyela negesi umkhakha. Siyakwamukela uxhumane nathi ukuze uthole ikhathalogi noma ngezifiso valve-phrojekthi yakho.