How to fix Pipes clanging under trailer?

dw trailer, just had the pee trap blown out to get rid of smell.

  4 answers
  • Julio Russi Julio Russi on Jun 16, 2018
    Foam , also comes in spry can .

  • Robyn Garner Robyn Garner on Jun 16, 2018
    Sounds like an air lock.

  • Mar33482700 Mar33482700 on Jun 16, 2018
    the reason pipes clang is because they weren't strapped down: as water moves through the pipes it causes friction which makes the pipes vibrate giving a banging sound. try getting them strapped down

  • Jewellmartin Jewellmartin on Jun 16, 2018
    Obviously, something is loose. And it may not be the sewage line. Get under there and check any water, gas, a/c and other pipes and hoses you have. Secure anything that is loose with wire or big U-clamps so nothing with be jolted out of place by travel. Enjoy your life. ☺️