Xylem GOULDS REDJACKET Série Directives D'installation, D'utilisation Et D'entretien page 10

Section 7 Pressure Tanks
and Piping
Standard Pressure Tank
When a pump is used with a standard pressure tank, it must
be connected to the tank using standard fittings. A rubber
isolator hose should be connected between the pump and
the tank to reduce noise and vibration transmission. Set
the tank on bricks to avoid condensation beneath the tank.
Install a union and a gate valve between the pump and tank
for servicing. Install an air volume control in the tank tapping
and connect ¼" tubing to the pump. (Figure 12.)
AIR VOLUME CONTROL
GATE VALVE
ISOLATOR HOSE
AIR VOLUME
UNION
CONTROL
CONNECTION
STANDARD PRESSURE TANK
TO SYSTEM
SHUT-OFF
VALVE
DRAIN
10
STD. GALVANIZED
PRESSURE TANK
FIGURE 12
RELIEF
VALVE
CENTRIPRO
TANK
SUCTION
PIPE
PUMP STAND
FIGURE 14
Replacing a Standard Tank With a
Pre-Charged Air Tank
Many times a defective steel tank must be replaced with a
pre-charged air tank to provide effective system protection.
Figure 13 should be followed for correct connection to the
system.
Because a pre-charged air tank is precharged with air, it will
always occupy less space than a standard tank for similar
amounts of pressurized water. Be sure to plug the air port on
a jet pump, as it is no longer necessary to supply air to the
tank.
Adjusting Pre-Charged Tank To
System Requirements
Pre-charged tanks are shipped with a standard precharge of
38 PSI. The precharge should be adjusted according to the
installation instructions packed with the tank.
"T" MANUAL
REGULATING
VALVE
DRIVE PIPE
VALVE
SUCTION
PIPE
TO SYSTEM
PRESSURE
SWITCH
PUMP STAND
DRAIN
OPTIONAL
LOCATION
FOR PRESSURE
SWITCH
PRE-CHARGED
AIR TANK
GATE VALVE
ISOLATOR
UNION
HOSE SERVICE
LINE
PRE-CHARGED AIR TANK
FIGURE 13
SHUT-OFF VALVE
SUCTION PIPE
CENTRIPRO
UNION
FIGURE 15
TANK