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high pressure

In science and engineering the study of high pressure examines its effects on materials and the design and construction of devices, such as a diamond anvil cell, which can create high pressure. By high pressure is usually meant pressures of thousands (kilobars) or millions (megabars) of times atmospheric pressure (about 1 bar or 100,000 Pa).

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  1. S

    Valliant EcoTech High Pressure

    Hello. I am a homeowner and have a Valliant EcoTech 835 (2017). Serviced every year and worked like a treat until about a few months ago when I notified the pressure reading was too high (> 3 bar). My plumber came and did a regular service and told me the boiler is in tip top condition. The...
  2. MichaelO

    Water supply line pressure: one too low, one too high

    Two connected houses in our 70s condo development, everyone served by one water meter at the road. 833 has 40 lbs of pressure while attached house 835 has over 100 lbs. -- no problems in either house or immediately outside -- and no pressure relief valves or shutoffs. Plumber traced the...
  3. L

    Oxypic causing high pressure?

    Hi all! We had low pressure in our Potterton boiler (gas) and the guy who serviced it recommended to try Oxypic. We did that last weekend and re-filled the water making sure it was turned off. However the water has started to increase and now it’s in the red (too high pressure). Any idea what’s...
  4. P

    Hot water high pressure problem

    Hi. I have a hot water high pressure problem that my heating engineer (and other engineers that he has spoken to) cannot fix. I’m hoping someone on the forum can explain what is happening and how to resolve it. My hot water system uses an air bubble at the top of the hot water tank for...
  5. Orchid_2022

    High Pressure Commercial Toilet

    I am looking for suggestions /advice on getting a commercial high pressure toilets that does the job in one flush. Does anyone have any toilets they can recommend?
  6. L

    How can i turn my standard gravity loft fed system

    Trying to get a high pressure shower running off a gravity fed system
  7. I

    Commercial high pressure system, will hep couplings be stong enought?

    I am having to work on a concealed shower but there is no service valve and so I am having to isolate from a large mixing valve which is linked to several other showers. I am going to add a service valve to make it easier for future maintenance but the pipe connected to the shower is 15mm...
    • Illuminate
    • Thread
    • america commercial couplings high high pressure pressure system usa
    • Replies: 9
    • Forum: USA
  8. V

    I Balanced My System But Now Have High Pressure

    Hi everyone this is my first post - I have no idea what I'm doing with plumbing and heating - have had some success by reading forums etc but now I'm stuck. I live in a townhouse with 3 floors. Never had much heat in radiators on my ground or 3rd floor. So I rebalanced the system. (Put all...
    • Vinylrecords
    • Thread
    • america balanced high high pressure pressure system usa
    • Replies: 2
    • Forum: USA
  9. A

    Greenstar 4000 combi consistently high pressure

    I am a not an expert and worried about a boiler installation for my mum. She is 91 and lives on her own (vulnerable adult with dementia). I had a new boiler installed (Worcester Greenstar 4000 30kW Combi) end of August as she needs a reliable boiler. I visit my mum every 2/3 weeks (I live in...
  10. R

    Boiler pressure gets too high & cuts out with heating but hot water is fine!

    Hi! I have a 9 year old Baxi combi boiler. When I turn the central heating on, the boiler pressure is getting so high that it keeps cutting out completely. It's absolutely fine when I run any hot water though. Does anybody know what the problem is likely to be please? Thank you
    • Rose13201
    • Thread
    • baxi boiler boiler central heating system high high pressure hot hot water pressure water
    • Replies: 1
    • Forum: Gas Engineers Forum
  11. C

    Mains high pressure

    Has anyone come across extremely mains high pressure in a domestic property ?..? I used 2 gauges one at 6 bar and other at 10 bar both were off scale when static. I was shocked at the readings. Have since fitted PRV. Just seeing if people have experienced the same.
    • Clint B
    • Thread
    • america high high pressure mains pressure usa
    • Replies: 6
    • Forum: USA
  12. G

    Rayburn oil pump high pressure side

    Hi, I’m after a little help with a dilemma concerning my Rayburn 460k... i Know a little bit about the oil burner and oil etc, but the problem is that I need to replace the small diameter pipe from the oil pump to the back of the manifold. I’ve tried all my normal avenues and can’t find anyone...
  13. Y

    High pressure into the boiler

    Hi All, We have issue with our "viessmann vitodens 200" (16 year old already), about a month ago display was blinking with message "F E" and the whole system was off. After resetting the system it get back to normal work, but then we notice that there is a high pressure on the gouge around 2.5...
  14. C

    Pressure in heating system keeps creeping up

    We have a 2 year old Valiant EcoTec 832 Combi boiler which was running our CH and hot water. We recently had some UFH installed and the boiler moved to our new extension. Over the past weeks the pressure in the heating system keeps creeping up. It goes from approx 1.5 to 3.2 bar overnight. If...
    • Chillidog
    • Thread
    • america central heating system heating heating system high pressure keeps pressure system ufh usa
    • Replies: 12
    • Forum: USA
  15. D

    Noisy Ceramic Taps under high pressure.

    Hi all, i have an unvented cylinder with balanced cold feeds. The cloakroom basin monoblock tap is under 3bar of balanced pressure. As the basin is very small ive had to turn down the isolation valves to stop water flooding. Obviously this has made the taps very loud at night. Is there a way of...
  16. W

    High pressure solvent welded plastic pipe

    Is I believe what this is. Posted a pic of some a while back and think Shaun identified it thus. Want to change the inlet and float valve the pipework pictured feeds. I know in both instances I could change washer but want to have a plan B and C. Am I likely to find that my fibre washers, hep...
  17. P

    High pressure problem fixed or not?

    Hi all, sorry in advance for the long post, but I'm trying to get all the info in: I have recently been having a problem where when the heating is turned off the pressure gauge sits and stays at 1 bar, the hot water comes through taps/shower etc. as normal. But as soon as the heating is turned...
  18. W

    Shower cartridge for "high pressure" or "combi boilers"

    3 options for a cart I need (haven't taken it out to examine.) Low pressure, high pressure or combi. They've got a combi, so presumably I'd go for the latter option but what system are they calling high pressure? I thought a combi was 'high' pressure, so to speak. Is Unvented 'higher' pressure...
  19. C

    High pressure on highflow 400

    Hi i currently have a worchester highflow 400 rsf combi. The past 6 weeks the overflow pipe been dripping water, I've checked the water pressure and this was up to 3 bar. I've had the expansion tank replaced twice (first one was faulty) but the pressure is still high. ive changed the heat...
  20. S

    High pressure in heating system and constantly filling

    Hello, Around 3-4 weeks ago I noticed the TPV overflow pipe at the back of the house was dripping and the system pressure had increased to 3 bar. I bled the radiators (no trapped air) and then ran off some water from a downstairs radiator. Initially this did the trick and the pressure dropped...
    • Si_99
    • Thread
    • constantly filling heating heating system high high pressure mains pressure problem system water
    • Replies: 15
    • Forum: Plumbing Jobs | The Job-board
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