unvented cylinder pressure vessel

[BigBurner]

After wildly bucking around like a crazed horse, BB is finally crawling towards the idea of fault-finding.

To the point my boy, to the point.

 

[gas4you]

Getting dangerous again waterways. Instucting where only G3 should be involved, you incompetent pensioner

 

[nairb999]

Can someone please advise whether this is a pressure reducing valve after the main tap and drain. It has the letter Y on the body and the pressure gauge. It is presently at 1.5 bar. Is it adjustable - there is a screw on top of the unit.

Untitled

• nairb999
• 19 Jan 2009
• 1

 

[Water Systems]

Can someone please advise whether this is a pressure reducing valve after the main tap and drain. It has the letter Y on the body and the pressure gauge. It is presently at 1.5 bar. Is it adjustable - there is a screw on top of the unit.

Untitled

• nairb999
• 19 Jan 2009
• 1

That is a pressure reducing valve. Test the pressure after the valve, and as been said you have to test various bit of pipe before and after the valve. Replace the stopco ck with a full bore co*ck.

 

[gas4you]

Go back to respite BigBurnerwaterdrivel.

Your incompetent input is not wanted on here.

You again just make yourself a bigger laughing stock posting under different alias's

 

[Softus]

That is a pressure reducing valve.

You're quite wrong.

It's a pressure limiting device.

 

[nairb999]

That is a pressure reducing valve.

You're quite wrong.

It's a pressure limiting device.

I have turned the screw clockwise a full turn and the pressure gauge is now 1.9 - it was 1.6. The flow rate has increased to 10.6 l/m from 8.5.

Is this OK? Can I increase pressure further or should I reset to original

 

[Water Systems]

Look at the label on the cylinder. What is the maximum pressure? Unvented cylinders can usually take around 3.5 bar. Turn up the pressure reducing valve to 3 bar and see what happens. It may be that the setting was far too low.

 

[nairb999]

Look at the label on the cylinder. What is the maximum pressure? Unvented cylinders can usually take around 3.5 bar. Turn up the pressure reducing valve to 3 bar and see what happens. It may be that the setting was far too low.

The manual says "Max working head 10.3 bar" and the opening pressure on thd T&P valve is 7.0 bar, so I presume I can go ahead!

 

[nairb999]

Look at the label on the cylinder. What is the maximum pressure? Unvented cylinders can usually take around 3.5 bar. Turn up the pressure reducing valve to 3 bar and see what happens. It may be that the setting was far too low.

The manual says "Max working head 10.3 bar" and the opening pressure on thd T&P valve is 7.0 bar, so I presume I can go ahead!

Before I go ahead could someone please comment

 

[gas4you]

Usually the most common setting for this valve is 3-3.5 Bar, regardless of how high your incoming pressure is.

The 7 Bar cold PRV will blow for safety if the incoming main exceeds 7 Bar.

If you have over 3.5 Bar then you should get excellent results, as this valve will reduce all the mains down to 3.5 Bar, so if extra taps are turned on the valve will open further to maintain the 3.5 Bar it is set to.

This is called a balanced supply.

 

[nairb999]

Usually the most common setting for this valve is 3-3.5 Bar, regardless of how high your incoming pressure is.

The 7 Bar cold PRV will blow for safety if the incoming main exceeds 7 Bar.

If you have over 3.5 Bar then you should get excellent results, as this valve will reduce all the mains down to 3.5 Bar, so if extra taps are turned on the valve will open further to maintain the 3.5 Bar it is set to.

This is called a balanced supply.

Thankyou gas4you. I have taken a more cautious route and set at 2.5 bar. This has improved the situation greatly.