Noisy TRV

[scotty plumber]

What's the point in it being bi directional if you have to fit it in the right direction?

You fit them any direction you want, it has an adjustable arrow which you can adjust simply with two fingers,if you don't adjust the arrow correctly they can make a noise as it is a danfoss valve ( very common ) i am suggesting this as a possible solution

 

[aido]

Others, such as
presetting versions and special ‘radiator’ valves, are also obtainable.

Bi-directional valve bodies are claimed to allow flow in both directions, removing any

possibility of incorrect installation. Before these were introduced, valves fitted the wrong

way round often caused system noise through water hammer. These older flowdependent

valves carried arrows on their castings indicating the correct flow direction to

avoid the risk of water hammer.

Danfoss Revolver.
Unfortunately, even the new specially designed bi-directional valves

produced by numerous manufacturers have been found to occasionally give rise to

system noise. Danfoss intensive research found that it was physically impossible to

produce a bi-directional valve of this type that would eliminate noise every time under

every set of conditions.

Looks like you can fit them any direction.

 

[SimonJohns]

Apologies Scott for thinking you were an idiot. I'm obv the idiot

 

[scotty plumber]

Apologies Scott for thinking you were an idiot. I'm obv the idiot

Do not worry

 

[Billy Bob Bob]

Apologies Scott for thinking you were an idiot. I'm obv the idiot

no ones the idiot simon you live and learn,thats what this forums about we can all give a bit from what we know

 

[WaterTight]

I've only ever fitted cheap-as-chips TRV's so have never come across this Danfoss arrow mallarcky. Good to know.

 

[scotty plumber]

On the back of the box it has several examples on which way the arrow should be pointing

 

[WaterTight]

It comes in a box? Ritzy!

 

[scotty plumber]

It comes in a box? Ritzy!

( cardboard box ) very posh!

 

[johnnyplumb]

always buy danfoss trv's myself. here's a tip for anyone who does'nt already know. always buy the 8/10mm trv's even if you need 15mm as they are both the same price . you get a 8mm & a 10mm reducer for free this way. you only have to add an olive for the 15mm valve.