Kohler C3-225 K-4736T-0 Installation Manual page 7

G 1/2 Hose
6.
NOTE! For those newly installed G 1/2 hose, before the inlet
hose connected to T-valve, must flush for several seconds to clean
the inner side of the pipe, in order to remove the dirt and debris etc.
Kohler Co. 7 1103349-T01-B