aol and photobucket aren't talking tonight so i can't upload the pictures. i have a classic valve with a serial number in the 15,000's, its the one i mentioned in the other thread about trying to make one valve out of two, when i went to unscrew the power tube tip the hole tube unscrewed out of the end of the valve. the flange the tube is attached to is threaded and so is the inside of the valve. was this common on the early valves? what i thought was red permatex was a thin red o ring that had torn into which is probably why this valve was leaking. its also the one someone drilled and tapped for a 1/8 npt something into the chamber just below the threads for the tube assembly.