Replacement TRV2 to TRV 4

[6moe66]

Recently purchased the Drayton Wiser smart Controller and TRVS and realise that the threads on my old TRV2 valve do not match the newer style given with the kit so i cannot fit the smart TRV's.

Im going to replace the old TRV2 right angle valves but i notice they show only one way flow whereas the new Drayton TRV 4's show 2 way. I don't know what difference this will make in the system? Please see the attached pictures showing the old ones and the new ones i plan to replace.

Its an Ideal Logic 35+ gas combi btw.

Cheers.

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[ShaunCorbs]

Arrow indicates direction of flow in your set up replace like for like eg head to the top

 

[Scott_D]

Old valves directional. New valves bi directional so should be fine to swap over.

 

[6moe66]

Thanks guys, thought that was the case.