The function of theft prevention of Model FDKY65-21 theft prevention wellhead equipment is achieved by adding theft prevention valves and lock to the side outlets beside wellhead cross. Theft prevention lock is installed in the side outlet bore under the condition of normal production. When workover operation is needed, users have to unlock and dismantle the theft prevention lock at first.

For some workover operation, testing tool must be connected to the side outlet by thread connection before unlock the theft prevention valve. But for some other workover operation such as well washing, users do not need to connect the testing tool.
Both the valves and polished rod stuffing box have theft prevention function, open and close operation must be performed by special-used wrenches.

Technical Specifications