(Sizes 5" to 5 3/8")

Features:

• Used in drilling operations as an immediate method to regain circulation in the event of a pack off of the bottom hole assembly
• Circulate cuttings out of the hole to prevent additional packing-off of the drill string
• Reliable fatigue resistant design to maintain rupture pressure rating
• Large ID to allow high circulation flow rates and reduced plugging risk
• Disc supplier with over 60 years experience
• Drilling Sub can be manufactured to match drill string connections (DS40, CET43, XT39, XT40, NC38)
• Wide range of pressure ratings available (7,500 psi, 7,000 psi, 6,500 psi, 6,000 psi, 5,000 psi, 4,500 psi etc)