FlexiDriveTM, is a remote valve operating system from Smith Flow Control (SFC) and is designed for valves that are positioned in inaccessible locations or unsuitable for operation with conventional actuators. FlexiDrive is a 316 stainless steel, mechanical cable-drive system which can operate valves at distances up to 60m from the operating station and is capable of accommodating bends exceeding a total of 500o. Its mechanical design provides a versatile and cost-effective alternative to actuators for valves positioned in hazardous locations or maintenance intensive, cumbersome rod linkages. The system can be routed through bulkheads and walls, positioned above or below the operator’s working location and can be adapted to work even on submerged equipment. In addition, FlexiDrive can operate in temperatures from -30oC up to 175oC and is manufactured to IP65 as standard, although higher ratings are available to special order. The FlexiDrive system is an assembly consisting of two stations connected by a unique patented linear drive cable. One station is supplied with an adaptation kit that mounts directly onto the host valve input shaft, the other is positioned and secured at a convenient location where the operator can most efficiently and safely operate the valve. This operating station is available as standard on a 1:1 gearing ratio; maximum torque output from the operating station is 225 Nm which can increase to 500Nm with 4:1 gearing. The operating station also incorporates a valve position indicator which provides a dial reading of the actual (distant) valve position.
