Flint & Walling CPH Convertible - Manuel (Page 4)

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INSTALLING PIPING IN WELL
Shallow Well Application - Where Suction Lift Is
Less Than 25 Feet
1. On single pipe installations (Fig. 1) attach foot
valve to the end of the suction pipe and set in
the well, making certain the valve is below the
water level. The foot valve should at least five
(5) feet from the bottom of the well to prevent
sand from being drawn into the system.
2. When connecting a drive point (Fig. 2) a
check valve must be used in the suction line
in place of a foot valve. For easy priming
connect the check valve as close to the well
as possible.
3. All piping from the well to the pump should
slope slightly upward with no sagging.
Support suction pipe between water source
and pump. Unions in the suction line near the
pump and well will aid in servicing. Be sure to
leave enough room so that wrenches can be
used easily.
IL1187
Water Level
25 ft.
Max
Suction
Lift
3/4 or 1 in.
Discharge Pipe
1-1/4 in.
Suction
Pipe
Discharge
to Home
Pipe
Support
Foot Valve
1
IL1188
3/4 or 1 in.
Discharge Pipe
1-1/4 in.
Suction
Pipe
Discharge
to Home
Check
Valve
2
Deep Well (Double Pipe System)
Where water level is greater than 25 feet and
inside diameter of well is four (4) inches or larger
(Fig. 1).
1. Attach the foot valve to the ejector using a
galvanized steel or plastic nipple. Add enough
1 in. pressure pipe and 1-1/4 in suction pipe
to submerge ejector 10 to 15’ below pumping
water level, making certain foot valve is at
least five (5) feet from bottom of well. If
pressure pipe and suction pipe of the same
diameter are used, be sure to identify them
clearly so that they will be connected to the
proper tappings of the pump.
If a known well leak exists, replace nipple with
21 feet of 1” tail pipe between the ejector and
the foot valve. This will provide a continuous
source of water for the pumping system.
2. Check pipe and foot valve for leaks by filling
pipes with water. A continuous loss of water
indicates a leak in the piping, foot valve or
unions, and must be corrected.
3. If no leaks are found, proceed to WELL TO
PUMP CONNECTION (SUCTION PIPE).
For long offset distances, see chart below for
proper pipe size.
4. All piping from the well to the pump should
slope slightly upward with no sagging. Support
suction pipe between water source and pump.
Unions in the suction line near the pump and
well will aid in servicing. Be sure to leave
enough room so that wrenches can be used
easily.
INSTALLING PIPING IN WELL (CONTINUED)
IL1184
Water
Level
Suction
Lift
3/4 or 1 in.
Discharge
Pipe
Suction
Pipe See
Table B
Discharge
to Home
Pipe
Support
Foot Valve
Pressure
Pipe See
Table B
4 in. ID Well
Ejector
1
Pipe Sizes Required For Offset Piping For
Deep Well Ejector Installation - Table B
Total Suction
Pipe Length
1/2 HP Suct 1/2 HP
Press
3/4 HP Suct 3/4 HP
Press
1 HP Suct 1 HP Press
0-25’ 1-1/4” 1” 1-1/4” 1” 1-1/4” 1”
25-50’ 1-1/4” 1-1/4” 1-1/2” 1-1/4” 1-1/2” 1-1/4”
50-75’ 1-1/4” 1-1/4” 1-1/2” 1-1/2” 1-1/2” 1-1/2”
75-100’ 1-1/2” 1-1/4” 1-1/2” 1-1/2” 2” 1-1/2”
100-150’ 1-1/2” 1-1/2” 2” 1-1/2” 2” 2”