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The SDX High Flow Safety Drain
TM
installed in a concrete
shell utilizes a small cutout in the concrete to form the
sump which is sometimes made of plastic or fiberglass.
This concrete sump provides superior shell strength by
eliminating the large hole associated with plastic sumps.
The water seal is formed against the suction pipe in the
same way a water tight seal is formed with return pipes.
The concrete cutout is typically eleven inches (11") wide,
by two (2) inches deep, with a finger size cutout around
the pipe to allow room for a watertight seal.
(Fig. 4)
Rebar Steel (Fig. 6)
Concrete reinforcing steel should be kept 3" away from
all pipe and fittings.
Concrete Shell Sump (Fig. 4)
Form a concrete sump around each suction pipe.
Concrete Shell Preparation (Fig. 5)
Prior to installing the interior finish, cut each SDX riser
pipe approximately 1" behind the concrete shell's
surface.
Note:
Suction Safety Standards require that main drain
grates used to cover concrete sumps, must have the
suction pipe cut at least 1½ times the pipe diameter
behind the drain cover. This is to allow room for even
water flow through all drain cover holes. This is not
necessary with the SDX drain because the Patent
Pending design provides uniform suction regardless of
pipe location. However, if the pipe is too close to the
surface, it may restrict water flow to the pump, reducing
hydraulic efficiency, but this does not pose a suction
safety hazard.
1
1
”
(t
yp
)
2” Deep (typ)
Finger Size
Cutout
Fig. 4
1” Deep (typ)
Fig. 5
SDX CONCRETE INSTALLATION
