Katup senar pengeboran mungkasi cairan saka mili munggah senar pengeboran asring yen pengeboran kicks karo dicokot saka ngisor. LANDRILL bisa nyedhiyani kualitas premium Full opening safety valve (FOSV), Kelly valve, Nang blowout preventer (IBOP), Drop-in katup mriksa , Klep ngambang.