Cheki vharuvhu yakagadzirwa uye inogadzirwa zvizere zvinoenderana nezvinodiwa zve API 6A 《Equipment Specifications yeWellhead uye Muti weKisimusi》, inokwanisa kushandiswa nekuchinjana nemichina inopindirana kumba nekune dzimwe nyika inoenderana neAPI 6A Standard. Iyo yepakati inotora sulfide-resistance simbi uye inokwanisa kushandiswa muH2S mamiriro, muviri wevharuvhu wakagadzirwa nealloy simbi yekuumba nekuita kwakanaka. Mhando mbiri dzeCheck mavharuvhu anopihwa nelandrill: Swing type uye Lift mhando.