How can Flashing Damage be contained?

Flashing cannot be eliminated in the valve – if the downstream pressure is less than the vapour pressure then flashing will occur.

To minimise the damage:-

  1. Hard face trim (using hard facing materials such as Stellite, or Tungsten Carbide)
  2. Use more erosion resistant body material
  3. Increase size of valve, thus reducing the velocity
  4. Use angle valve – flow over plug