Profile: Mcm Oil Tools produces manifolds, gate & check valves and chokes & control panels. We concentrate on control consoles and OEM parts. Our check valves are designed for production and drilling applications. Our hydraulic drilling chokes are manufactured to API 6A specifications. Our control consoles features gauge displays for choke position, rig air, hydraulic, standpipe and choke manifold pressures. Our choke speed adjustment valve controls the opening and closing speed of the hydraulically actuated choke.