the horizontal distance to the drain, then use that
measurement to cut a short length of PVC pipe.
2j. Slide this pipe into the elbow horizontally.
2k. Slide one last 90° PVC elbow (slip × slip) onto
the open end of the horizontal pipe to complete
the faucet.
3. INSTALL THE DRAIN
The drain we used (Figure
J
) separates into
upper and lower pieces so that the dishpan “sits”
between the two.
3a. Find the upper drain piece that will go through
the sink basin, place that portion in the center of
your dishpan, and trace its circumference onto the
bottom of the dishpan.
3b. Use the handsaw or Dremel to cut along the
traced line.
3c. Insert the upper part of the drain through the
hole (Figure
K
), then screw on the lower part on
the underside of the dishpan (Figure
L
).
3d. Slide the 2" ABS 90° elbow (Figure
M
) into the
opening at the bottom of the drain, underneath the
sink basin.
4. INSTALL THE PLUMBING
In our model, the plumbing exits at the front of the
greywater bin. It’s very important that the ¾" in-
line check valve sits in a horizontal position. Your
PVC piping also needs to go low enough in the bin
to avoid touching the sink basin, drain, and elbow.
Assuming your model will mirror ours, install
plumbing as follows.
4a. Measure from the top of the sink basin to the
lowest part of the 2" ABS 90° elbow.
4b. Add 1" to 2" to this measurement, and cut a
piece of ¾" PVC pipe. Insert that piece into the PVC
reducer that’s screwed into the bulkhead on the
underside of the lid.
4c. Slide a ¾" 90° PVC elbow (slip × slip) onto
the end of the PVC pipe. The open side of this
elbow should be facing the direction in which the
plumbing will exit the unit.
4d. On the front of your bin (Figure
N
) where the
plumbing will exit, use your measurement from
step 4b to measure from the top of the bin, down
toward the ground. Place a mark with a marker.
4e. Tip the bin on its side and drill a ½" hole at
your mark.
TIP: To prevent the bin from moving when drilling,
position the bin so that the opening is facing you, and
use one foot to step on the inside of the bin.
4f. Install the remaining ½" bulkhead into the hole.
Wrap a few layers of PTFE tape around the threads
of the remaining two PVC male reducers and screw
one into either side of the bulkhead.
4g. Cut a 3" length of PVC pipe and slide it into PVC
reducer on the inside of the bin.
4h. Slide the ¾" in-line check valve (Figure
O
)
onto this pipe.
IMPORTANT: There’s an arrow on the in-line
check valve; make sure this arrow is facing the faucet.
The purpose of the valve is to prevent backflow of
water inside the unit. If you install it backward it will
prevent water from entering the bin properly and
coming out of the faucet.
4i. Measure from the center of the check valve to
the curved portion of the elbow from step 4c.
4j. Using that measurement, cut another ¾"
PVC pipe.
4k. Slide one end of this pipe into the check valve,
and the other end into the elbow from step 4c. This
completes the plumbing inside the greywater bin.
N O
Adam Vera, Sam Reardon, Javier de León, Colton Coty
65
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M74_062-7_HandWasher_F1.indd 65M74_062-7_HandWasher_F1.indd 65 7/19/20 12:38 PM7/19/20 12:38 PM
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