York MPADC Manuel D’Utilisation

NOTE: The Water Guardian Drinking Water Appliance is easy to install on most standard faucets.

And, it includes a feature that makes it easy to switch from filtered to unfiltered water. 

Step 4 Remove the aerator or screen from the end of your faucet. The water at your sink should 

be turned off.

Step 5 Attach the Diverter Valve directly to the faucet spout. If the threads of the Diverter Valve 

don't match the threads of your faucet,  use one of the adapters provided with your unit.

a. Faucets with Outside Threads:  For most faucets with outside threads, the diverter 

valve can be attached directly to the faucet.   However, if the Diverter Valve is smaller 

than your faucet, attach the adapter with inside threads directly to your faucet and then 

attach the Diverter Valve to the adapter.

b. Faucets with Inside Threads:  If your faucet has threads on the inside, attach one of the two adapters with out-

side threads (choose the appropriate size for your faucet) directly to your faucet and then attach the Diverter 

Valve to the adapter.

c. Faucets with No Threads:  If your faucet has no threads, you will need to contact your independent dealer.
d. Faucets with Odd Sized Threads:  If your faucet does not fit any of the adapters provided with your unit, please 

contact your independent dealer.

e.  Faucets requiring more clearance for the connection, such as sprayer hose faucets, would use a long adapter 

(MC257). See Step 5.e. on next page for installation instructions. 

Existing
Faucet

Unfiltered
(tap) Water
Spout

Filtered
Water Spout

4

NOTE: The Water Guardian comes with a diverter valve and hose that connects the
drinking water system to your faucet.

Step 3 To connect the hose to the housing base, insert the tubing on the end of the 

hose into the inlet and outlet ports.
a.  Insert the larger hose into the bottom port (Inlet connector) by slowly 

pushing the stem straight into the connector as far as it will go.  Give a 
second push to confirm that the stem is fully inserted.

b. Insert the smaller hose into the top port (Outlet connector) by slowly 

pushing the stem straight into the connector as far as it will go.  Give a 
second push to confirm that the stem is fully inserted.

Small hose

Outlet

Inlet

Large hose

bypass
lever

Diverter Valve

Swivel
Attachment 
Ring

MC108

MC107

MC106

MC257