3-way valve: mixing or diverting?
3-way valve: mixing or diverting?
(OP)
Hi,
When coosing a 3-way valve, how can we decide between mixing or diverting valves? What are the reasons to choose each one. Wich applications are they mos suitable for?
Thanks!
When coosing a 3-way valve, how can we decide between mixing or diverting valves? What are the reasons to choose each one. Wich applications are they mos suitable for?
Thanks!





RE: 3-way valve: mixing or diverting?
Ted
RE: 3-way valve: mixing or diverting?
RE: 3-way valve: mixing or diverting?
When we talked to Fisher their first comment was 'why would you want to use 3 way valves?'
RE: 3-way valve: mixing or diverting?
If this is for a heat exchanger application (as I understand from your other thread) then 3 way valve is a kind of dead duck. I replaced many three way valves (or blinded one port) with two way valves. Don't let your pump gulp more energy when it is not required.
RE: 3-way valve: mixing or diverting?
I'm more calm now that i eared from you that there is no special reason to choose between both. For what i understood, it depends on the application and if it's possible is better to choose a 2 way valve.
Thanks! If there is any more arguments that you think that might be interesting, please reply again!
RE: 3-way valve: mixing or diverting?
The 3-way valve eliminates the requirement for a liquid safety valve (if this would be an expensive solution).
RE: 3-way valve: mixing or diverting?
Ok. I understand that id depends on the aplication, and for example if we have the kind of situations exposed by "Scotsinst", we definatly must use 3-way valves.
But, still i have a question regarding this issue of the 2 or 3-way valves, also exposed im my other thread: when using a 2-way valve, there are changes in the flow rate, and consequently in the fricton losses. This induces some kind of dynamic behaviour in the system with implications on the pump.
My question is: how is the pump dimensioned in this case?
Thanks