scope:

Description

This standard covers devices designed primarily to supply water to floor drain traps which have infrequent use & in which water evaporation would allow sewer gas to enter the premises. These devices are designed to supply water to a drain trap to provide & maintain its water seal using a supply from a fixture drainline, ballcock, or flushometer valve tailpiece or an electronic primer device. The rate of water flow to the trap shall be permitted to be fixed or adjustable. The devices are of 4 types:

(a)Those installed on waste line tail pieces from fixtures, such as lavatories, sinks & similar fixtures where grease is not normally generated;

(b) Those used in conjunction with ballcock assemblies;

(c) Those which receive flow from flushometer valves; &

(d) Electronics devices which discharge water automatically & are upstream of the air gap or vacuum breaker.