Our online catalog is being updated! Please contact us for current pricing. Qualified "Tom Thumb" Valves Qualified "Tom Thumb" manual valve Qualified "Tom Thumb" valves are available in a wide range of sizes, and with three choices for actuation: manual, pneumatic, and air-to-open/spring-to-close To order Qualified "Tom Thumb" valves, please add the flange type at the end of the valve model number, e.g., TTA-500-H/133 or TTA-500-H/ISO16. Other options should be described, such as "with reed switch position indicators."