A container treatment machine with a tank and spaced-apart valve housings, wherein a pressure-resistant delivery pipe having a curved section is provided between the tank and each valve housing directly or via an intermediate flow regulator, the delivery pipe being composed, at least in its curved section, of a hard plastic which is pressure- and temperature-resistant, and is acid- and alkali-resistant and permissible for foodstuffs, in particular polytetrafluoroethylene (PTFE or Teflon).