2 port valves or 3 ports valve ??

[Big al]

Hi guys
Is it better to have two 2 port valves or one 3 port valve to control the flow to either dhw or underfloor heating ? Cheers

 

[SimonG]

Prefer 2 ports

 

[Big al]

Prefer 2 ports

Ok thanks Simon , any particular reason ?

 

[ShaunCorbs]

2 ports least then if one fails you don’t loose both eg if hot water fails you have heating etc

 

[SimonG]

Ok thanks Simon , any particular reason ?

It's what I'm most used to and it works so I stay with it.

 

[Big al]

It's what I'm most used to and it works so I stay with it.

As good a reason as any , ok Simon on the system already it has a flow obviously from hear pump to cyclinder , before cyclinder it t' s off one side to heating , other to dhw, on the dhw side into the cyclinder it already has a 2 port fitted to stop gravity circulation when heat pump is off , can I use this to do both jobs ? Stop gravity circulation and control dhw ?if I can all I have to do is put a 2 port on the heating side ??

 

[Big al]

2 ports least then if one fails you don’t loose both eg if hot water fails you have heating etc

Thanks Shaun, 2 votes for 2 ports can you see my reply I sent to Steve and give your opinion also please

 

[ShaunCorbs]

If it’s the flow to the heat coil then yes only need one more

 

[Big al]

If it’s the flow to the heat coil then yes only need one more

Yep it has the existing 2 port on the heat coil flow, that's brill news , thanks very much , I might be in contact again , trying to finish our new build install, plumber very kindly went bust and decided to go at insulation installation instead