Anti-flooding valves,non-fecal sewage: Temperature resistance (NT VVS 054)

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  • Report #: NT VVS 054
  • Approved: February 1987
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This NORDTEST method may be used to test whether an anti-flooding valve for non-fecal sewage is resistant to the temperatures which may occur in the sewer system and to establish whether the antiflooding valve tightend up in case of impounded, polluted water.