combi vs conventional
"Andy R" wrote in message
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"Christian McArdle" wrote in message
t...
That is true, as it is even worse, they TWO 2-ways valves.
2 port valves are usually much more reliable than 3 port mid position
valves, though.
The so-called reliability is negated by have two of them.
And they don't restrict the flow so much.
Depends on what model you buy. Some restrict it a hell of a lot.
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