Performance Requirements for Trap Seal Primer – Drainage Types and Electric Design Types
ANSI Approved: April 2023
Trap seal primers are primarily designed to supply water to floor drain traps that have infrequent use and in which water evaporation would allow sewer gas to enter the premises. The trap seal primers covered by this standard are designed to supply water to a drain trap to provide and maintain its water seal by using a supply from a fixture drain line, fill valve (ballcock), flushometer valve tailpiece or an electric trap seal primer. The rate of water flow to the trap shall be permitted to be fixed or adjustable
A downloadable version of this standard is also available.