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Allan

Allan

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I want to reduce the flow of water going into my combination boiler. At present it's struggling to cope with the 14ltr/hr. The spec says 12ltr/hr. I'm not sure what type of valve will give me the finest adjustment. The pipe is 15mm. Two I've looked at are below but the names gate valve and stopcock make the seem like they are designed to be on or off, not a gradual setting.
Gate Valve 15mm
Stopcock 15mm
I had thought of a pressure valve but want to keep as much pressure, just reduce the flow.
Honeywell Pressure Reducing Valve x
Allan
 
Allan said:
I want to reduce the flow of water going into my combination boiler. At present it's struggling to cope with the 14ltr/hr. The spec says 12ltr/hr. I'm not sure what type of valve will give me the finest adjustment. The pipe is 15mm. Two I've looked at are below but the names gate valve and stopcock make the seem like they are designed to be on or off, not a gradual setting.
Gate Valve 15mm
Stopcock 15mm
I had thought of a pressure valve but want to keep as much pressure, just reduce the flow.
Honeywell Pressure Reducing Valve x

Think you need to find out how things work,,rather than guess it. Sorry, but your post is a bit missing understanding as to how things work.
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Downwest, I'm not sure what "a bit missing understanding as to how things work." means? If you would like any further information please don't hesitate to ask.
Allan
 
RichardS said:
Is this a boat with a combi boiler? :unsure:

Either way, a PRV is what you require. Fit an adjustable one so you can very it to suit.

Richard
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Richard, many thanks, I had hoped putting "home" in the title would avoid misunderstandings. Never mind your comment made me smile.
A pressure relief valve is the last thing I need, it would throw away a fortune in water! The reply after yours seems perfect, reduced flow but maintaining the same pressure for balanced temperature at mixer taps and shower.
Allan
Allan
 
Allan said:
Richard, many thanks, I had hoped putting "home" in the title would avoid misunderstandings. Never mind your comment made me smile.
A pressure relief valve is the last thing I need, it would throw away a fortune in water! The reply after yours seems perfect, reduced flow but maintaining the same pressure for balanced temperature at mixer taps and shower.
Allan
Allan
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Errrrr ...... you do realise that this is Practical Boat Owner? :unsure:

You included a link to a PRV in your own post so I don't understand why you've suddenly re-assigned your own term to "pressure relief valve". :unsure: :unsure:

If you restrict the flow by introducing a restriction you will also reduce the pressure once water is actually flowing so you might as well just fit a variable PRV . :)

Richard
 
RichardS said:
Errrrr ...... you do realise that this is Practical Boat Owner? :unsure:

You included a link to a PRV in your own post so I don't understand why you've suddenly re-assigned your own term to "pressure relief valve". :unsure: :unsure:

If you restrict the flow by introducing a restriction you will also reduce the pressure once water is actually flowing so you might as well just fit a variable PRV . :)

Richard
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Richard, please accept my apologies. I've fitted many pressure relief valves in the past and they have often been referred to as PRVs. I didn't think of the pressure reduction valve as a PRV, although obviously it fits. Entirely my mistake.
I understand the relationship between between flow and pressure, I feel my system will be best served with a restriction to the flow but maintaining a constant pressure may have exactly the same result.
Many thanks again.
Allan
 
Allan said:
Richard, please accept my apologies. I've fitted many pressure relief valves in the past and they have often been referred to as PRVs. I didn't think of the pressure reduction valve as a PRV, although obviously it fits. Entirely my mistake.
I understand the relationship between between flow and pressure, I feel my system will be best served with a restriction to the flow but maintaining a constant pressure may have exactly the same result.
Many thanks again.
Allan
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Sorry Allan, I was trying to figure out what you wanted, as the flow rate sounded low, but Aquaboy seems to have linked to a solution.
 
sailaboutvic said:
a stop cock and a gate valve are mean to shut off the water supply although i cant see no reason why they wouldn't work to reduce the flow .
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Just go to the local plumbers merchant and ask for a 15mm pressure reducing valve. Install it in the mains to the boiler and if it supplies your shower too fit another on the supply to that as well. Stopcocks and gate valves won't help at all with pressure. Most newish shower valves can handle unequal pressures but not all. Good luck
 
steve1963 said:
Why is this question on a forum meant to be dedicated to marine topics?
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I'm terribly sorry if my post offends you. I have, found, as this thread proves, that there are many helpful and nice people on here.
I've ordered both options and hope to fit them later in the week.
Allan
 
Allan said:
I'm terribly sorry if my post offends you. I have, found, as this thread proves, that there are many helpful and nice people on here.
I've ordered both options and hope to fit them later in the week.
Allan
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It doesn't offend me in the slightest. It is just that this forum will become less and less useful unless it stays focused on relevant topics. There are plenty of other forums you could have posted this on. I wasn't the only person to have pointed this out
 
I don't know any other forum where you'd get a sensible answer to a question like this. I'm often guilty of asking non boaties because I know there's a wealth of technical knowledge available here.
PS I don't know why my comment is in capitals.
 
ghostlymoron said:
I don't know any other forum where you'd get a sensible answer to a question like this. I'm often guilty of asking non boaties because I know there's a wealth of technical knowledge available here.
PS I don't know why my comment is in capitals.
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There are plumbing questions just like this every day in The Lounge. They always attract serious answers, often from the same people who are posting on here. ;)

Richard
 
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