Ama-valve esango lodaka ayisango eliqinile, isiqu esikhuphukayo, ama-valve esango anezimpawu eziqinile, lawa mavalvu aklanywe ngokuhambisana ne-API 6A ejwayelekile. Isetshenziswa kakhulu udaka, usimende. i-fracturing kanye nesevisi yamanzi futhi kulula ukusebenza futhi kulula ukuyinakekela.