35 Ill. Adm. Code 604.735
Chlorinator Piping
Section 604.735 Chlorinator Piping
a) Cross-Connection
Protection
1) The
chlorinator piping must be designed to prevent contamination of the treated
water.
2) For
all systems required to disinfect under Section 604.700, piping must be
arranged to prevent backflow or back-siphonage between multiple points of
chlorine application.
3) The
water supply to each eductor must have a separate shutoff valve.
b) Pipe Material
1) The
pipes carrying elemental liquid or dry gaseous chlorine under pressure must be
Schedule 80 seamless steel tubing or other materials recommended by The
Chlorine Institute in Pamphlet 6, Piping Systems for Dry Chlorine, incorporated
by reference in 35 Ill. Adm. Code 601.115. These pipes must not be PVC.
2) Rubber,
PVC, polyethylene (PE), or other materials recommended by The Chlorine
Institute must be used for chlorine solution piping and fittings.
3) Nylon
products are not acceptable for any part of the chlorine solution piping
system.