Testing mechanism for valve replacement and leak detection on a tank car

A testing mechanism to be utilized when repairing a valve utilized on a tank car, the testing mechanism comprising:

• a pipe plug device configured to inflate and plug a pipe located on a tank car, the pipe plug device including a pipe plug bladder and a pipe plug pressure fitting to inflate the pipe plug bladder against a wall of the pipe, wherein the pipe plug device is used when removing a valve and reinstalling the valve that has been repaired;
• and
• a pressure test device to conduct a leak detect test on the repaired valve after the pipe plug device is removed from the pipe, the pressure test device including a pressure test valve cap and a test valve bladder located on the lower end of the replacement valve, a bladder pressure fitting connected by a hose to the test valve bladder and connected through the pressure test valve cap, the bladder pressure fitting receives a bladder pressure to inflate and deflate the test valve bladder, and a test pressure fitting that receives a test pressure to pressurize the repaired valve to detect a leak in the repaired valve, the test pressure fitting and the bladder pressure fitting located separately on the pressure test valve cap.

A pressure test device to conduct a leak detect test when repairing or replacing a valve utilized on a tank car, the pressure test device comprising:

• a pressure test valve cap;
• a test valve bladder located on the lower end of a replacement valve or a repaired valve;
• a bladder pressure fitting connected by a hose to the test valve bladder and connected through the pressure test valve cap, the bladder pressure fitting receives a bladder pressure to inflate and deflate the test valve bladder within a pipe, and a test pressure fitting that receives a test pressure to pressurize the replacement valve or the repaired valve to detect a leak in the replacement valve or the repaired valve, the test pressure fitting and the bladder pressure fitting located separately on the pressure test valve cap, wherein the test pressure is less than the bladder pressure.