Whats the "normal" domestic water pressure? The pressure in my house has gone up to 4.75bar (used to be about 3bar I think a couple of years ago), I'm told it might be because the water board has just laid some big new pipes less than a mile away. Do I need a PRV because we've been getting plenty of water hammer recently.
Need a pressure reducing valve?
- Thread starter AndyDavis
- Start date
Do I need to fit one though?
When the boiler was fitted 2 years ago I remember something in the literature about it working fine up to 3bar, not sure what happens its more. If the pressure can be up to 6 bar how do boilers, showers, etc. survive?
When the boiler was fitted 2 years ago I remember something in the literature about it working fine up to 3bar, not sure what happens its more. If the pressure can be up to 6 bar how do boilers, showers, etc. survive?
Perhaps the most vulnerable item (with the lowest stated max working pressure) is a water softener. I have seen the top come off one of these due to excessive pressure (about 6 Bar).
If your local pressure is high, it may well go higher at night also. If YOU think it might be an issue, why not fit a pressure-reducing valve? They only cost £20 or so.
If your local pressure is high, it may well go higher at night also. If YOU think it might be an issue, why not fit a pressure-reducing valve? They only cost £20 or so.
Most boilers etc have a 10 bar limit, however damage can occur due to sudden pressure changes especially if there is air in the pipework.
Be aware there are two types of pressure reducing valve.
The cheap ones maintain the pressure downstream only whilst the water is flowing, the expensive ones stop the pressure downstream rising above the preset limit even when there is no flow.
Go for the expensive type especially if you have push fit plumbing.
Fit a decent Y strainer before the valve and screw in a pressure gauge (most PRV's have a 1/4 port) so you can check the operating pressure from time to time.
Be aware there are two types of pressure reducing valve.
The cheap ones maintain the pressure downstream only whilst the water is flowing, the expensive ones stop the pressure downstream rising above the preset limit even when there is no flow.
Go for the expensive type especially if you have push fit plumbing.
Fit a decent Y strainer before the valve and screw in a pressure gauge (most PRV's have a 1/4 port) so you can check the operating pressure from time to time.
Try www.bes.ltd.uk
DIYnot Local
Staff member
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local
