motorised valves

[eagleeye]

can anyone tell me what the flow rate difference is between a 22mm and 28mm 2 port honeywell zone valve

 

[solutions]

This should tell you what you want to know including flow rates etc.
https://www.google.co.uk/url?sa=t&s...Ntv4LhI96cfJWH06w&sig2=NK7UmO7gA2CQBXndsiPLNQ
Fyi 11 secs of google searching found this.

 

[solutions]

Incase you need assistance interperating the graph on the above honeywell pdf. This should help
Link
https://www.google.co.uk/url?sa=t&s...DBaEBh9k0asm7wJeg&sig2=QYbH01hGQEO_JAF9Ji8vJw
Definition of cv and kv
The flow coefficient - Cv - and the flow factor - Kv - are commonly used to specify the capacity of control valves.

Flow Coefficient - Cv
It is often convenient to express the capacities and flow characteristics of control valves in terms of the

Flow Coefficient - Cv
The flow coefficient - Cv - is based on the imperial units system and is defined as:

the flow of water through a valve at 60 oF in US gallon/minute at a pressure drop of 1 lb/in2
The flow coefficient is commonly used in the U.S.

Flow Factor - Kv
The metric equivalent of the flow coefficient - Cv - is based on the SI-system and is called the

Flow Factor - Kv
The flow factor - Kv - is defined as

the flow of water with temperature ranging 5 - 30 oC through a valve in cubic meters per hour (m3/h) with a pressure drop of 1 bar
The flow factor is commonly used outside U.S.

 

[missplumb]

clear as mud:banghead:

 

[happyflyer]

This should tell you what you want to know including flow rates etc.
https://www.google.co.uk/url?sa=t&s...Ntv4LhI96cfJWH06w&sig2=NK7UmO7gA2CQBXndsiPLNQ
Fyi 11 secs of google searching found this.

Took me 12 secs so what, I am getting past it, wear my fingers out hey

 

[solutions]

Took me 12 secs so what, I am getting past it, wear my fingers out hey

The internet has the information. That doesnt always mean it will be easy to find or once you have found it that you will understand it. In this instance it was easy to find. The Understanding has yet to be seen.

 

[happyflyer]

The internet has the information. That doesnt always mean it will be easy to find or once you have found it that you will understand it. In this instance it was easy to find. The Understanding has yet to be seen.

pretty easy to understand too solutions