one way valve allows water to flow one direction but not the other - prevents greywater flowing backwards into fixtures, or (not shown) prevents sewage contamination to greywater system.
3-way valve
abs pipe
autovent
ball valve
check valve
cleanout
float switch
flow splitter
movable drain
mulch basin
mulch shield
no-hub connector
p-trap
poly tubing
pvc pipe
remote actuator
standpipe
surge tank
toggle switch
valve box
vent
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