Forum Discussion
Old-Biscuit
Oct 06, 2013Explorer III
3 valve system

One type of 2 valve system....cold water inlet valve (bottom) is a 2 position valve

Another type of 2 valve system.....hot & cold valves are 2 position valves

Now if you are actually talking about a 'water filter'......then 1 valve is inlet, 1 valve is outlet and the other valve is 'filter bypass' so that cold water can still flow with filter bypassed to replace/clean/repair etc(Close inlet/outlet & Open bypass)

One type of 2 valve system....cold water inlet valve (bottom) is a 2 position valve

Another type of 2 valve system.....hot & cold valves are 2 position valves

Now if you are actually talking about a 'water filter'......then 1 valve is inlet, 1 valve is outlet and the other valve is 'filter bypass' so that cold water can still flow with filter bypassed to replace/clean/repair etc(Close inlet/outlet & Open bypass)
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