How to Install the WK18 Under Sink Water Filter

Shut off the water supply valve, make sure the water has stopped before proceeding to the next step, then remove the faucet hose from water supply.
1. If your water supply valve is 1/2", then you can connect the inlet hose to the water supply directly.
(Tips: If your water supply valve is 3/8", then you need to use the 1/2"-3/8" converter first before you connect inlet hose to the water supply)
1. If your faucet hose is 1/2", you can connect the faucet hose to the outlet port directly.
(Tip: If your faucet hose is 3/8", then you need to use the 1/2"-3/8" converter first before you connect the faucet hose to the outlet port.)