[Help] Megaflo pressure

Clive Walker

Stand Or Fall

Jul 5, 2011

3,167

Brighton

• Oct 23, 2021

• #1

Anyone know how to increase the pressure on a megaflo? Cannot find anything simple on Google.

 

B

Billy the Fish

Technocrat

Oct 18, 2005

17,500

Haywards Heath

• Oct 23, 2021

• #2

Obviously one of the plumbing lads will give you the real answer, but I thought in unvented you were only as good as your mains pressure?

 

BN9 BHA

DOCKERS

NSC Patron

Jul 14, 2013

21,561

Newhaven

• Oct 23, 2021

• #3

In-line strainer / pressure reducing valve could be blocked or needs replacement.

On the older versions they rusted up inside after while causing the water to be slow.

 

Clive Walker

Stand Or Fall

Jul 5, 2011

3,167

Brighton

• Oct 23, 2021

• Thread starter
• #4

bn9 bha said:

View attachment 141509

In-line strainer / pressure reducing valve could be blocked or needs replacement.

On the older versions they rusted up inside after while causing the water to be slow.

Click to expand...

Is there not a valve you twist to just increase the pressure?

 

BN9 BHA

DOCKERS

NSC Patron

Jul 14, 2013

21,561

Newhaven

• Oct 23, 2021

• #5

Clive Walker said:

Is there not a valve you twist to just increase the pressure?

Click to expand...

You can increase the pressure but you usually do this by removing a cap and turning with an Allen key on some valves. Some units have a gauge to tell you the pressure ( not to be confused with the pressure gauge for the heating )

I will add unvented hot water systems should only be maintained and installed by a plumber with the correct qualifications. Definitely not a DIY job.

 

Brok

😐

Dec 26, 2011

4,345

• Oct 23, 2021

• #6

Obviously a 5 minute job, and probably not even that...

 

Bry Nylon

Test your smoke alarm

Helpful Moderator

Jul 21, 2003

19,857

Playing snooker

• Oct 23, 2021

• #7

Oh. Not a striker from the MSL then?

For that reason, I’m out.

 

R

Rowdey

Well-known member

Jul 7, 2003

2,537

Herne Hill

• Oct 23, 2021

• #8

Clive Walker said:

Is there not a valve you twist to just increase the pressure?

Click to expand...

Juts to be clear, do you mean the pressure from the hot tap, or boiler system pressure..?

 

Clive Walker

Stand Or Fall

Jul 5, 2011

3,167

Brighton

• Oct 23, 2021

• Thread starter
• #9

Rowdey said:

Juts to be clear, do you mean the pressure from the hot tap, or boiler system pressure..?

Click to expand...

The gauge on the mega flow is on 0 and I know it should be 1.5

 

R

Rowdey

Well-known member

Jul 7, 2003

2,537

Herne Hill

• Oct 23, 2021

• #10

Clive Walker said:

The gauge on the mega flow is on 0 and I know it should be 1.5

Click to expand...

Post a pic up, but 99% that's system pressure, not Domestic Hot Water (DHW) pressure - there will a a braided hose with one/two valves either side of it close by - open the valves so gauge rises and reads 1.5bar - No more..!
Vent rads at top of house, and re-top up pressure to 1.5bar

 

Clive Walker

Stand Or Fall

Jul 5, 2011

3,167

Brighton

• Oct 23, 2021

• Thread starter
• #11

Rowdey said:

Post a pic up, but 99% that's system pressure, not Domestic Hot Water (DHW) pressure - there will a a braided hose with one/two valves either side of it close by - open the valves so gauge rises and reads 1.5bar - No more..!
Vent rads at top of house, and re-top up pressure to 1.5bar

Click to expand...

Can’t upload a pic at the mo.

That hose is unattached at one end and I can only see a blue tap at the fixed end.