TM 5-4610-218-12
Valves and Draincocks - Continued
Table 2-1.
Normal
Illus-
Symbol
Location
Function
Startup
Type and
Operating
tration
Size
Position
Position
F i g . No.
Partially
Partially
Orifice
Controls
In sludge
CV-17
plug
open
open
flow of
concentra-
valve
coagulated
tor tank.
water to
(short
threaded
wet well
rod).
tank.
1 1/2 in.
Closed
Closed
Controls
FV-18
Raw water
float
water
level
valve.
l e v e l in
alarm as-
wet well
sembly.
tank.
2 in. gate
Closed
Closed
Partially
DV-19
Upper
valve.
drains
drain line
erdlator
from bot-
tank for
tom of erd-
later tank
short
shutdown.
2-6
