TRVs - their Purpose and Function

[Best]

Sorry if this appears to be a simplistic question, but not as easy to answer perhaps as we think.
It is to settle an argument.

As the title says, - what are TRVs supposed to do in all respects and what way do they operate?

 

[Welder]

By sensing room temperature they open or close to keep the room at the temp set. They generally operate like a conventional ball valve in so far as they let less water through the closer they get to set point.

They generally use a wax capsule which expands. The winding you do moves it closer/farther.

 

[Harvest Fields]

To regulate the temp in a specific room by opening and closing dependant on set tempreture.

 

[Welder]

To regulate the temp in a specific room by opening and closing dependant on set tempreture.

There's an echo on here

 

[Harvest Fields]

There's an echo on here

Just confirming mate

 

[Best]

Well that is basically how I would describe TRVs, but I have been told I am wrong, so you are also both wrong if we believe what I am being told.

Apparently they are -
A Proportional control adjusting the flow through a radiator so it is producing exact amount of heat.
They are designed (allegedly) to be full open when room temperature is one degree below set temperature and closed when room is one degree above.
They operate as balancing valves and shouldn’t operate as on/off valves.

So what do you reckon?
I did say it wasn’t as easy as it appears.

 

[Welder]

Well that is basically how I would describe TRVs, but I have been told I am wrong, so you are also both wrong if we believe what I am being told.

Apparently they are -
A Proportional control adjusting the flow through a radiator so it is producing exact amount of heat.
They are designed (allegedly) to be full open when room temperature is one degree below set temperature and closed when room is one degree above.
They operate as balancing valves and shouldn’t operate as on/off valves.

So what do you reckon?
I did say it wasn’t as easy as it appears.

I'd say that was put together by someone without experience of the real world. Of course they are proportional - so is the ball valve description of mine.

Show me any space that performs as designed on the drawing board and I'll share my non existent fortune

Out of idle curiosity, what else does one call the reduction of flow to zero if it's not 'off'?

Academic or sales BS

 

[Best]

Possibly an engineer/academic type, rather than a plumber I suspect.

 

[Harvest Fields]

Possibly an engineer/academic type, rather than a plumber I suspect.

That’s why I’m just a boiler man

 

[Harvest Fields]

Well that is basically how I would describe TRVs, but I have been told I am wrong, so you are also both wrong if we believe what I am being told.

Apparently they are -
A Proportional control adjusting the flow through a radiator so it is producing exact amount of heat.
They are designed (allegedly) to be full open when room temperature is one degree below set temperature and closed when room is one degree above.
They operate as balancing valves and shouldn’t operate as on/off valves.

So what do you reckon?
I did say it wasn’t as easy as it appears.

Explain that to the customer??? Think I’ll stick to what I said above.

 

[ShaunCorbs]

Depends on the valve the new imi valve have flow setters in the trvs so I'm guessing someone's been on a course ?

 

[Welder]

Even when the IMIs shut they are OFF
If it is, then I'll talk to Neil the MD to find out more...

 

[Harvest Fields]

Even when the IMIs shut they are OFF
If it is, then I'll talk to Neil the MD to find out more...

Let us know

 

[Welder]

Let us know

Meant if its an IMI person I'll talk to him. if not I wont
Just thinking tho. If you's interested in one of their courses I can highly recommend them