COPPER PETROL PIPES

Shannon News, 30 November 1928, Page 4

COPPER PETROL PIPES

HOW TO ANNEAL THEM. Petrol pipes are .almost invariably made of copper, a metal which lends itself conveniently to this purpose- by reason of its duetability, the ease with which it may be soldered, and the fact, that it is unaffected My petrol or atmospheric condiiioii3. There is only one fault —if fault it may be called — and this is its tendency to harden and crack on being subjected to severe and continuous vibration. This drawback can be overcome very readily by removing the pipe from time to time — once a year in ordinary circumstances j should be ample—and annealing it; | that is, heating it to redness and | plunging it in, quite soft and fit for further use. In parenthesis it may be mentioned that before the annealing process the nipples should be unsoldered and refitted after the pipe has been‘annealed. When resoldering the nipples it is important to make sure that no blobs of solder are left projecting into the bore of tlic pipe, as these will restrict the flow of fuel and may give the owner considerable trouble in detecting the cause of petrol starvation. As a rule it is preferable to fit an expansion coil in the pipe One complete turn is sufficient, and when possible it should be in the vertical J portion of the pipe, a few inches below ; the ta£ in the tank. The coil should . be in a horizontal plane, and should have a continuous fall.