QMP502 is a 1/4” Compression Diverter Valve that connects to your kitchen faucet.
diverter valve allows you to switch between the tap water from your
faucet and filtered water from the unit. The tubing attaches snuggly to
the compression connection and diverts the water to the filtration unit
when you pull the pin out. Simply push the pin back in to return to
regular tap water.