These fatter pipes were made up from the Walthers piping kit and Plastruct tubing. Extending from the two valves pointing forward will be "hoses" made up of either solder or aluminum wire, I intend to experiment with both. I'll simply drill a hole in the flange and 'poxy it in place. Note the extra sample bracket photographed in front of the pipe assembly. The double bend is to get the pipe into the pump house.