Flow Control Lock Mandrel Model No: CT-LM LOCK MANDREL of COT® is a device capable of holding pressure differentials from above or below when set at any depth in a corresponding Landing Nipple Profile of matching size & type. Features & Benefits Faster slickline service because of the retractable keys Operator control of locating, landing, and locking in the selected nipple Any number of the identical nipples can be run with selective nipples Smooth installation Reduces time in the well with slickline Seals on the locking mandrel protected from damage Running/pulling with no interference Keys provide positive location in nipple Applications Gauge hangers for bottom hole pressure/temperature surveys Positive locator for straddle systems Plugging under pressure Almost unlimited locations for setting and locking subsurface flow controls Notice: JavaScript is required for this content.