The Berkey Water Level sight glass spigot was created in response to a need on all stainless steel Berkey water filters. A common problem on all gravity filters is overflow of the lower chamber. If too much water is added to the upper chamber, and the lower chamber gets too full, the water in the lower chamber will overflow where the lower and upper chambers meet.
Because the stainless steel models are not see thru like the Berkey Light, there is no way to see how much water is in the lower purified water chamber, so in order to know when unfiltered water should be added to the top chamber, the top chamber had to be tipped or removed to see the water level in the lower chamber. This is an annoyance and sometimes leads to spilling water.
The Berkey Water Level sight glass spigot reveals the level of the water in the lower chamber. By being able to see the water in the lower chamber, water can be added to the upper chamber without risk of overflow. Generally, when the sight glass has 2 inches of water in it, it is safe to refill the upper chamber.
We have tested the water level spigot on all of the Berkey stainless steel gravity filters over a five year period with no problems. Many people have asked for this feature and we have found that this spigot to be an exceptional add on. You will learn how much water to add to your system to make best use of this spigot. This spigot is a third party product and is not manufactured by Berkey.
How to install The Berkey Water Level sight glass spigot
Unlike standard Berkey spigots that come with two washers and a nut, the water level sight glass spigot comes with a single washer and nut. When the sight glass spigot arrives, remove the nut and leave the washer on. Place the sight glass spigot through the spigot hole in the lower chamber of the Berkey. Now tip the sight glass spigot on its side to the left so that the water level tube is horizontal. Reach into the lower chamber and place the nut on the spigot threads. Hand tighten. Once the nut has been hand tightened, continue holding the nut, and with your other hand, hold the spigot and the bottom 2 inches of the sight glass tube and rotate the tube to a vertical upright position. Installing the water level spigot in this way applies an ideal amount of torque on the spigot washer to insure there will be no leaks.
Finally, where the sight glass spigot meets the top of the spigot, you will find a nut and o-ring assembly. This assembly insures that the glass tube and protective metal protector are securely attached to the spigot. Check to insure that this connection is hand tightened to reduce the risk of leaking from the connection. You are no ready to use your Berkey water filter with your newly installed Berkey water level view sight glass spigot.