I can’t type Japanese right now. sorry in English...
The National brand washlet i bought comes with a 3-way valve that is fitted
for a "metric" sized "water supply" (where your existing shut off valve is
connected to).
In North America we use the "imperial" measuring system so there was a
problem when i tried to connect the 3-way valve to my imperial sized 1/2
inch shut-off valve’s water supply.
If you have a National brand washlet the 3-way valve that comes with it has
a removable part inside which is fitted to connect to a metric sized
shut-off valve’s water supply. (for installation in Japan) You can remove
that part by pulling off the white cap on one end and pushing the inside
part through the valve till it slides completely out the other side. You
won’t need this part unless your bringing your washlet to Japan or some
countries in Europe.
Instead of connecting the 3-way valve into the shut-off valve’s water
supply, connect one end (the biggest end) to the toilet’s water tank (under
the toilets tank). Then connect the other end with a flexible steel or rubber
hose connector to the shut-off valve which is already connected to your water supply.
Then you connect the last end of the 3-way valve with the hose from your
washlet. That’s it. Fresh Water is now ready to flow to your toilets tank and
your washlet at the same time!
Tips for installing your washlet:
- Make sure you shut off your main water supply first before doing anything.
If your not sure where it is and your in a house, try looking in your basement or near your
water heater/main water tank or your laundry room. You’ll see it connected
to a pipe leading to the rest of the house. Turn the lever clockwise till
it’s fully closed.
- Shut off your toilets water supply (shut-off valve), flush your toilet and
turn on all your water taps (kitchen and bathroom sinks.) to make sure water is
off and leave them open.
- Make sure to use a strip of "Teflon Tape" applied clockwise around the
threading of all your connections before you attach them to avoid leaking
and make sure to fasten all connections tightly with an adjustable wrench.
- After everything is connected turn on your main water supply, and your
toilets water supply and inspect for any drips or leaks coming out of the
connections. Flush your toilet and check again. if nothing is leaking and
your washlet works, YOU DID IT !!! {^o^) good job!
If something doesn’t fit one end to another, try looking for connecting
"adapters" at your local plumbing store.
You can buy the flexible steel or rubber hose connector at any plumbing
store, 6-12 inches should be enough and they are made for attaching toilet
tanks to shut off valves so don’t worry, they just screw on with a wrench.