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water 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.

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  1. P

    Water pressure from gas boiler

    Hi, everyone! I live on the sixth floor of an apartment block. The water pressure used to be quite low but, a couple of years ago, the building had some work done to the water system and I had good water pressure in both the hot and cold taps. However, a few months ago, the water pressure in...
  2. G

    Camray 5 combi 90A loosing water pressure

    I have a 14 year old Camray 5 90A boiler in my kitchen. Im finding I need to top up the water side every week by almost 1 bar. I checked the air side of the expansion tank after I released any water pressure with the pressure release valve before I started it up 3 weeks ago and it had only...
  3. M

    Water Pressure for Kitchen Taps

    We bought a kitchen tap (Grohe Ambi Contemporary 2 handle sink mixer) some time ago, stupidly without checking water pressure. Return deadline has well passed. The instructions say minimum water pressure of 0.4 Bar is required and that operation with unpressured storage heaters is not possible...
  4. R

    Water Pressure Help

    Hi, I have just renovated my house and the plumber has been round to finish of the bathrooms, in the ensuite I've had a thermostatic shower and when i tried it the water hardly makes it out the end. I have a hot water tank in the loft (not a combo boiler system) and the shower hasn't got a...
  5. S

    Double check valves and high water pressure

    Came across a few Double check valves failing recently. Washing machine no water errors and outside tap with long hose connected same no water. Remove hose and open tap water flows ok. Re-connect hose ...no water. No blockage, no kink. Replaced washing machine valve to one without check valve...
  6. P

    Loss of water pressure in my bath after installing a mixer tap

    Hi all, I have just installed a new mixer tap to my bath and seem to have done something wrong as after about 20 seconds the water pressure drops off, I have a low pressure system with a regular boiler and have pressure everywhere else in the hose. Any advice would be very much appreciated
    • Paul Mutton
    • Thread
    • after bath installing mixer mixer tap pressure tap water water pressure
    • Replies: 14
    • Forum: Plumbing Jobs | The Job-board
  7. C

    sudden water pressure change

    When I opened the cold water faucet in the kitchen this morning there was a sudden burst of water and air. The initial burst was so strong that water went everywhere in the kitchen, really like a mini-explosion, followed by more bursts and gurgles. This has happened about 3, 4 times in the past...
  8. D

    Unstable water pressure

    Hi, I have no plumbing experience and a small problem - I have been hoping you could share your thoughts and let me know what you think is the best solution. I have a garage/shed/whatever you want to call it, which has equipment inside, which relies on steady pressure of water to work properly...
  9. M

    Low water pressure at electric shower.

    Had an electric shower problem, turned out to be low mains water pressure coming in to shower. Kitchen tap water pressure is fine, bathroom cold tap water pressure seems low but better than the shower. Haven't yet confirmed if bathroom cold taps are mains or tank fed. All pipes are boxed in...
  10. S

    Water Pressure Advice

    Hi all, Water mains aren't really my thing, I'm a bit out of my comfort zone and am looking for a bit of advice.I have a customer who is planning to convert to a unvented system as part of a house refurbishment and loft conversion. House will be a 3 storey, 5 bed 3 bathroom with 5 occupants (3...
  11. P

    Water pressure testing

    Hi guys, hope your enjoying the weekend. I have been asked by a client to carry out a water pressure, flow test etc in preparation for a new system and bathrooms etc so they can spec it. Do any of you know where to get a template for making the report with disclaimers etc. Thanks
  12. T

    Hose and water pressure on bathroom faucet

    Can someone advice me about water pressure in the pipes. I connected hose to bathroom lever handle faucet and at the end is garden sprinkle gun. When I turn on the faucet and pressure equalize in the hose I noticed leaking in the faucet head. Somebody told me that big pressure can make...
  13. N

    vokera linea 24 boiler High water pressure problem Help please

    My boiler is over pressurising, and venting out of the PRV outside (Continually dropping) I have replaced the PRV and checked the expansion vessel that needed topping up. I did notice that when I had toped up the Expansion vessel that the water gauge when up to the pressure that I had put into...
  14. R

    Unvented hot water pressure loss

    Hello Got a flat I rent that's lost pressure to hot water. Hopefully it's a blocked strainer! It's in Slough if anyone is interested? Cheers Rct
  15. C

    Glow Worm Flexicom lose water pressure and more...cost?

    I have Glow Worm Flexicom which seems to have a few issues. It keeps losing water pressure over few weeks, and until a few days ago was making a loud bang noise when switching hot water/ central heating. I have one of those water tank systems. I called a gas engineer who has a quick look and...
    • Cristina
    • Thread
    • central engineer flexicom glow glow worm glow-worm noise pressure water water pressure worm
    • Replies: 25
    • Forum: Plumbing Jobs | The Job-board
  16. P

    Low water pressure from bath taps

    I have a Worcester Greenstar 24i Junior combi gas boiler and 6 radiators. The water pressure to the downstairs taps is high as is the pressure from the shower. However, the pressure from the bath taps is so low it takes a good 15 to 20 minutes to half fill the bath. I have a mixer tap to the...
    • pameho
    • Thread
    • bath bath taps low water pressure pressure tap taps water water pressure
    • Replies: 5
    • Forum: Plumbing Jobs | The Job-board
  17. U

    Increasing Hot Water pressure (Shower)

    Hi Guys would somebody be kind enough to advise what the best way is to increase the hot water pressure from the shower please? we have a conventional boiler setup. Many Thanks
    • Unregistered
    • Thread
    • answers hot hot water hot water pressure pressure receive shower supplies water water pressure
    • Replies: 5
    • Forum: Plumbing Jobs | The Job-board
  18. C

    Tap advice - good water pressure

    Hi, we have really good water pressure where we live. But that in turn has left us with very noisy taps in the bathrooms. At the moment we have Blade Mono Mini Mixer taps from the Bathstore. They have aerators but our water certainly isn't aerated. The taps are noisy no matter how little/a lot...
  19. U

    Very high cold water pressure and very low hot water pressure!!

    Hi everyone, ive just moved into a place and the cold water pressure both upstairs and downstairs is immense to the point where the pipes bang and the hot water pressure upstairs is virtually non existent but fine downstairs. My question is, can I buy a pump to increase the pressure of the hot...
    • Unregistered
    • Thread
    • cold cold water downstairs high hot hot water hot water pressure pressure question upstairs water water pressure
    • Replies: 1
    • Forum: Plumbing Jobs | The Job-board
  20. GlennieT

    Worcester Greenstar 25i combi boiler and water pressure

    Hi this my first posting and I hope someone can help!? My elderly parents' water/heating/immersion system kept going wrong and they had to keep getting up in the loft to reset things. Anyway, I didn't want them getting into the roof at their age so I arranged a quote from their gas/electricity...
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