[Help] Megaflo pressure

[Clive Walker]

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

 

[Billy the Fish]

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]

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]

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.

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

 

[BN9 BHA]

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

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]

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

 

[Bry Nylon]

Oh. Not a striker from the MSL then?

For that reason, I’m out.

 

[Rowdey]

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

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

 

[Clive Walker]

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

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

 

[Rowdey]

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

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]

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

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.