ball rotation in the fully open or closed position. Over rotation of the valve ball has been an industry problem due to inadequate stem stop contact area. The dual contact points.... The M & M CANISTER GUARD's valve body cross section at the stem hole allows it to return to the industry standard 6-3/8 O.D. with significantly improved strength at this critical... of the most important deficiencies of all other known kelly valves, that of improved ability to close under significant flow and to easily operate under high balanced pressure...

Inside BOP Valves (IBOPs) M International About M%M Services Products Product Documentation Quality & Resources Locations Home News Employee Login Site Map Search Site FAQsBall... ValvesInside BOP Valves (IBOPs)SubsSwivels Inside BOP Valves (IBOPs) M&M offers two variations of "dart type inside blow-out preventers (IBOPs). The traditional style is two-piece... and manufactured to meet any industry standard as applicable.Two-Piece Inside Blow-Out Preventers M&M's two-piece IBOP is manufactured of the finest materials and are well known...