scope:

Description

The water treatment systems covered in this LEC shall be self-regeneration anion exchange systems designed to reduce nitrate from drinking water. The systems shall use anion exchange media that prevents nitrate dumping. Depending on the influent water quality, anion exchange systems, if not regenerated correctly, can dump or increase the amount of nitrate in the drinking water if other anions such as sulfates are exchanged by the resin. Non-regenerating residential water treatment systems designed to reduce nitrates shall be tested to NSF/ANSI 53.

Connections

Pipe threads and other connections shall conform to the applicable standards.

• Tapered pipe threads shall comply with ASME B1.20.1.

• Dry seal pipe threads shall comply with ASME B1.20.3.

• Compression assemblies shall comply with SAE J512.

• Soldered connections shall comply with ASME B16.18 or ASME B16.22.

• Push fit connections shall comply with ASSE 1061.

• Press connections shall comply with ASME B16.51.

Size Range

POE anion exchange systems shall be equal to or greater than ¾" inlet connections with a media volume of equal to or greater than ½ cubic feet of anion exchange resin.

Flow Range

≥ 4.0 gpm (15.1 lpm).

Temperature Range

34 - 100 °F (1 - 38 °C).

Pressure Range

20 - 125 psig (138 - 862 kPa).