Anti-flooding valves, fecal sewage: Temperature resistance (NT VVS 053)

  • Report #: NT VVS 053
  • Approved: February 1987
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  This NORDTEST method may be used to test whether an anti-flooding valve for fecal sewage is resistant to the temperatures which may occur in the sewer system and to establish whether the anti-flooding valve is tightend up in case of impounded, polluted water.