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pressure
Pressure (symbol: p or P) is the force applied perpendicular to the surface of an object per unit area over which that force is distributed.: 445 Gauge pressure (also spelled gage pressure) is the pressure relative to the ambient pressure.
Various units are used to express pressure. Some of these derive from a unit of force divided by a unit of area; the SI unit of pressure, the pascal (Pa), for example, is one newton per square metre (N/m2); similarly, the pound-force per square inch (psi) is the traditional unit of pressure in the imperial and U.S. customary systems. Pressure may also be expressed in terms of standard atmospheric pressure; the atmosphere (atm) is equal to this pressure, and the torr is defined as 1⁄760 of this. Manometric units such as the centimetre of water, millimetre of mercury, and inch of mercury are used to express pressures in terms of the height of column of a particular fluid in a manometer.
Can central heating / gas engineer expert help me with below issue.
During winter time only, I have been having issue with low pressure or pressure dropping with unvented hot water cylinder system.
During summer time there is no usage of central heating so the pressure at unvented system is not...
Hi everyone,
Gas combi Boiler
Mains fed in all taps and shower
How do I balance the water pressure in all faucets in my flat. Every tap/water faucet is mains fed but the cold water is really strong in every tap that if I open the tap fully it flies out like a fountain but the hot water is not...
Hi,
Looking to see if anyone can give some advice please.
My Baxi boiler has been losing pressure and I am having to top it up approx. every 4 hours from 0-1.5 bar each time. This has been going on a week now.
I have also started to notice small drips running down my condensate pipe...
Hello, hoping someone can advise me. My boiler stopped working - no hot water or central heating. Called out a company who came and assessed the problem as being that the hot water element in the immersion tank needed replacing. (I don't know exactly what it is called as the company has still...
Johnno1966
Thread
checking
element
hot
hot water
pressure
water
without
Hello, hoping someone can advise me. My boiler stopped working - no hot water or central heating. Called out a company who came and assessed the problem as being that the hot water element in the immersion tank needed replacing. (I don't know exactly what it is called as the company has still...
Johnno1966
Thread
checked
cylinder
hot
hot water
hot water cylinder
pressure
repair
time
water
Hi, all. I have a leak problem behind the washing machine. It's a pipe that is leaking directly into a drain. It used to drip but now is leaking a steady stream without stopping.
Seems to be coming from water heater but I cannot tell. It is cold water. When I turn off the main water supply, it...
Hello,
I'm trying to top up the pressure on my Greenstar 30i ERP but the blue keyless filling lever won't move. It doesn't feel stiff, it feels as if it has been locked some how. Do I have to do something to get it to move?
If anyone has any suggestions I would be very grateful.
Thanks...
Hi all.
So I have an OSO Super SXD 180 immersion heater and it is pouring a huge amount of water out of the cold water pressure relief valve regardless of whether the tank is heating or not. We're talking litres a minute currently. I have replaced the valve which changed nothing. I have...
Hi everyone,
Just wanted some confirmation regarding a PRV fitted to the mains supply in my building. All 6 flats in the building are now connected to the mains water feed supply and the water tanks in the attic have been disconnected (each flat has a combi gas boiler).
I can see there are 2...
Hi, I have a hot water cylinder which feeds 3 outlets (kitchen sink, basin in bathroom & bathtap) which has never had very good pressure (probably because of the set-up) but last year got so feeble that a guy suggested fitting a pump alongside the cylinder. This can work fine but then all of a...
Hello,
First post, be gentle! Anyway, here's my issue. I have a Roca The Gap D-Trit close-couple toilet with integrated macerator in my secondary bathroom. In all it's a great solution for a problem location for a bathroom. However, the cistern has a typical european style side inlet pipe, and...
I have an 8 year old Potterton HE Gold combi boiler losing pressure.
I have isolated the central heating to leave just water heating and it is fine. As soon as the central heating is introduced the pressure drops to zero within an hour. I have had floor boards etc up but cannot find a leak...
I live most of the year on a tiny Caribbean island with no mains water. I collect rain in a 25,000 gallon cistern which is then pumped to the taps. But the house is build against a hill top.
My water system is as illustrated below enabling the domestic water and garden irrigation to be served...
I've just put a second tap out in the garden and ran that 1/2" pressure water pvc to do it. Down from the first one, underground, up to the second.
The up and down runs exposed to the weather all the time.
Is that going to be alright or I should clad them or paint them or something, protect...
I have an Ariston combi e on lpg, the gas pressure drops from a lovely 37mb to 0 the second gas valve opens and fan starts to run, usually would drop to around 35mb on comparable systems. Any ideas what could cause that?
I suspected a blockage in the regulator so changed that and attached the...
Hello, I need some help.
Problem: my jet pump fluctuates between 15-35psi and will not build any pressure higher than that. There is a swooshing or surging sound that continually occurs.
Location: it pulls water from a lake to supply the house. Lift is 40ft distance from foot valve to pump...
Hi everyone just checking if this is right regarding water pressure and combi boiler pressure:
Do hot and cold water always vary in pressure such as the following?
Cold water from tap filled 1 litre jug in 2 seconds
Hot water from tap filled 1 litre jug in 5 seconds
Gas combi boiler pressure...
Hello, looking for advice on this please, general direction of where to look. We have an unvented Megaflo and the pressure and temperature is perfect in every other shower and tap except this one. Think it's a Mira Select BIV but the name has rubbed off. Any pointers as to where I should start...
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