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INTRODUCTION
Backwash pipe
A pipe is necessary to take the backwash water from the backwash manifold back to the water source
(comply with your local regulations) or to the closest drainage ditch.
In order not to limit backwash flow rate:
•
The backwash pipe should be no longer than 20 m (65 ft).
•
The pipe diameter should never be smaller than the backwash manifold diameter.
•
If the backwash pipe length is 10 meters (33 ft) or less, it should be of the same diameter as the
backwash manifold.
•
If the backwash pipe is longer than 10 meters (33 ft), it should be of a larger diameter than the
backwash manifold.
•
The pipe should not ascend above the elevation of the flushing manifold outlet.
Tools required for installation
•
No special tools are needed. A standard full installer toolkit is adequate.
•
To connect the control stand to the concrete slab: An electrical hammering drill and a concrete drill bit.
•
To connect grooved couplings: The following wrenches are required:
Grooved coupling size Bolt and nut size
inch
2
3
4
6
•
To connect flanges: The following wrenches are required:
Flange size Bolt and nut size Wrench size
up to 8"
10" to 14"
Flange connection
In most cases, the filtration system manifolds are connected to the main line with flanges.
ATTENTION
When connecting flange pipe connectors, do not forget to place the rubber gasket in place.
6 SANDSTORM
DOUBLE-CHAMBER INSTALLATION MANUAL
™
(mm)
mm
50
M10
80
M12
100
M12
150
M16
5/8"
15/16"
7/8"
1.1/8"
Wrench size
(mm)
17
19
19
24
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