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An open-source ventilator is a disaster-situation ventilator made using a freely licensed (open-source) design, and ideally, freely available components and parts (open-source hardware). Designs, components, and parts may be anywhere from completely reverse-engineered or completely new creations, components may be adaptations of various inexpensive existing products, and special hard-to-find and/or expensive parts may be 3D-printed instead of purchased. As of early 2020, the levels of documentation and testing of open-source ventilators was well below scientific and medical-grade standards.One small, early prototype effort was the Pandemic Ventilator created in 2008 during the resurgence of H5N1 avian influenza that began in 2003, so named "because it is meant to be used as a ventilator of last resort during a possible avian (bird) flu pandemic."

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  1. S

    Air vent question

    Please bear with me as I am not a plumbing expert :o I have an open vented, gravity feed central heating system. The system was power flushed a couple of years ago and a magnetic-trap fitted on the heating output path of the tri-valve. I manually vent a very small amount of the air from the...
    • Satchmo
    • Thread
    • air air vent bleed bleeding blockage central central heating cold cold water heating high loft noise open vented pipe plumber plumbing power question radiators remove tank valve vent water
    • Replies: 1
    • Forum: Plumbing Jobs | The Job-board
  2. T

    potterton suprima 50

    hi, have 2 rads that are cold with one of these boilers, i want to take the rads off and fit new valves to them but cant find the filling loop. there is a drain off on the 22 pipe coming out of the top of the boiler but no filling loop help
    • tonell31
    • Thread
    • boilers cold drain filling loop loft open vented pipe potterton potterton suprima suprima system tank valves
    • Replies: 1
    • Forum: Plumbing Jobs | The Job-board
  3. P

    were to put exspansion tank

    hi all my central heating system is a open vented and always needs venting so i am going to make it in to a sealed system but unsure were to put exspansion tank.on the flow or return?and safety release valve on flow or return. regards paul
    • paulgid
    • Thread
    • boiler central central heating system cold expansion filling loop flow inside open vented pipe pressure problem put safe safety sealed system tank temperature valve vent vessel
    • Replies: 1
    • Forum: Plumbing Jobs | The Job-board
  4. P

    Pipe size problems

    Evening all, I'm working in a block where all the flats have constant hot water and central heating(they pay a set amount each month set by landlord). The 2 top flats baths hot water taps are spluttering water when turned on, i looked back to the main supply pipe(22mm) and noticed that the...
    • Plamber
    • Thread
    • air bar circulation error head high hose hot hot water hot water system level mains open vented pipe pipe size plumbing pressure problem problems pump secondary size supply system tap vent water
    • Replies: 19
    • Forum: Plumbing Jobs | The Job-board
  5. P

    UFH manifold thumping noises

    I am experiencing thumping noises for 10 to 15 seconds as the thermostatic valves begin to open on one of the manifolds in my home underfloor heating system. The system is 6 years old and this is a new phenomenon. I also get a single thump immediately after the demand via the bedroom stat...
    • Pfanatic
    • Thread
    • air boiler central heating system flow high job manifold motorised valve noise noises open vented pressure problem pump sealed system thermostatic thermostatic valves ufh underfloor underfloor heating valves
    • Replies: 5
    • Forum: Plumbing Jobs | The Job-board
  6. P

    sealed system or open vent

    please could any one advise me on how much more efficant is a sealed system to an open vented one.mine is open vented but i may make into sealed system as my boiler is a ideal icos he. regards paul
    • paulgid
    • Thread
    • air boiler central heating system convert icos open vented sealed sealed system system vent
    • Replies: 1
    • Forum: Plumbing Jobs | The Job-board
  7. T

    no filling loop

    Have a potterton boiler... sealed system... pressure is just below 1 bar and want to top it up.. theres no filling up so wondering where would be the handiest way to top it up from
    • Tonto123
    • Thread
    • bar boiler boilers branch central heating system cold drain expansion filling filling loop fitting hose kitchen mains open vented outside tap pipes pipework potterton pressure remove supply system tank tap vessel
    • Replies: 12
    • Forum: Plumbing Jobs | The Job-board
  8. P

    Bleding and zones

    When bleeding the radiators it is recomended to turn the boiler off to prevent air being drawn in (can't see how if the system is at 1.5 bar). If the boiler and zones are off then would it bleed ok or do I have to ensure that the zone valve is on whilst the boiler is off?
    • plumbinguser
    • Thread
    • air bar bleeding boiler cold forum hot open vented plumbing pressure pump radiator radiators refill sealed system valve valves water zone zones
    • Replies: 3
    • Forum: Plumbing Zone
  9. J

    Hot water tap for bath has lost pressure

    Hi, can someone offer advice? Problem: The pressure for the hot water tap to the bath (this is seperate to the en-suite) has lost pressure, since modificatioins to the seperate en-siuite. History: I decided to change the scource of heating the hotwater, for the en-suite shower. The original...
    • Jim Cooper
    • Thread
    • airlock basin bath cold cold water cylinder electric heating hot hot water hot water cylinder hotwater indirect mains mixer open vented pressure shower supply tap taps thermostatic water water tap
    • Replies: 1
    • Forum: Plumbing Jobs | The Job-board
  10. V

    Leaking HW cylinder

    I fitted a new indirect open vented cylinder in some ones house about 6 months ago . It has started leaking slowly from the seam near the bottom & I am not sure what to do about it . 1. Return it to where I got it from & hopefully get a free replacement . 2. Empty it , turn it upside down &...
  11. R

    Air in my system Advice Please

    Hi guys have an old open vented system. I have lived in the house for 3 years and have always had some some air in the system. A few weeks ago I decided enough was enough. So I took every rad off and flushed them through. Then flushed the system through with Sentinel X400 system restorer and...
    • Ratters
    • Thread
    • advice air baxi boiler central heating system convert inside open vented pipe please pump remove seal sealed sludge system tank vent
    • Replies: 7
    • Forum: Plumbing Jobs | The Job-board
  12. N

    Aqualisa digital exposed with adj. head

    Hi all new here, I have a open vented 3 port valve system. Old shower was hot & cold feed low voltage only running 2.5mm cable. cwsc is sitting directly on the joists in loft because of low pitch roof. Cold feed was taken from the bottom of the cwsc. Hot feed taken from vent pipe level...
    • nebby
    • Thread
    • 22mm air aqualisa bathroom cable cold cylinder digital exposed gravity head hot hot water loft open vented pipe problem shower system tank tee valve water work
    • Replies: 3
    • Forum: Plumbing Jobs | The Job-board
  13. B

    Unvented Tribune Cylinder

    My mate has been working on an unvented cylinder today (not sure if he has his ticket) and has asked me a few questions about it. I'm not that experienced with unvented so I thought I would ask you guys. The cylinder is a Tribune 210 litre capacity. It is a straight like for like swap. The...
    • bigcheese
    • Thread
    • appliance boiler central heating system cylinder expansion expansion vessel fitting high hot hot water job open vented pressure qualification reset safety supply tank unvented valve vessel water work
    • Replies: 11
    • Forum: Plumbing Jobs | The Job-board
  14. D

    pin came out radiator

    Hi guys, i need some help, thermastat on one of my rads was not working, the rad would not heat up, so i removed the therastat and push the pin in and out a few times, still not working so i pulled the pin, and it came out completely,:p so did some water,:eek: so i pushed it back in quickley...
    • deborah9684
    • Thread
    • flow free head metal open vented pipe plumber radiator radiators system thermostatic trv valve valves water work
    • Replies: 6
    • Forum: Plumbing Jobs | The Job-board
  15. W

    piperun above feed/expansion tank

    Dear all Due to a slight oversite in the plumbing of our new build house, we realise that the flow and return pipes to one of our two underfloor heating manifolds runs above the f/e tank! The house is single storey with no loft so we cannot raise the f/e tank any higher. The pipes above...
    • Walled
    • Thread
    • above air bar ceiling convert expansion flow heating loft maintain open vented pipes plumber pump seal sealed store system tank thermal ufh underfloor underfloor heating valves water
    • Replies: 11
    • Forum: Plumbing Jobs | The Job-board
  16. L

    Power Flushing

    Good Morning What is the view on investing in a good quality power flushing kit and then advertising locally for this service. I am aware having had British Gas in my own home that such a process would improve the quality of my heating but i do not want to pay their prices. It has occured to...
    • Leoki
    • Thread
    • advertising building building regs cheap costs flush flushing gas heating high job open vented plumber power price pricing problem radio system tools water work
    • Replies: 16
    • Forum: Plumbing Jobs | The Job-board
  17. N

    pricing

    changing a trv on open vented system, draining down system to change valve ,would 100 be a fair price do u think? many thanks
    • nigelh
    • Thread
    • bathroom costs drain free gas gas safe insurance internet job leak mobile open vented plumber plumbers plumbing polish price pricing problem refill safe tee trv valve valves van work
    • Replies: 40
    • Forum: Plumbing Jobs | The Job-board
  18. J

    Leaking Automatic air valve to Bolier

    Can someone advise a newbie please? Sorry all trying to get the hang of these postings. My question was to be, ' I have a Baxi 100 HE condensing boiler, on an Indirect system which has a leaking AAV. I have recently de-sludged the system ( all radiators); and I am flushing out with new water...
    • Jim Cooper
    • Thread
    • air automatic baxi boiler central central heating system condensing cylinder drain flushing hot hot water hot water cylinder hot water system indirect leak leaking newbie open vented radiators remove system valve valves water
    • Replies: 8
    • Forum: Plumbing Jobs | The Job-board
  19. H

    central heating always needs bleeding

    every two weeks my central heating system needs bleeding. i,ve checked all round there is no visable leeks unless in the concrete floor can anyone suggest what to do next
    • homeguy30
    • Thread
    • air always bleeding central central heating cold concrete drain header header tank heating needs open vented system tank vent
    • Replies: 5
    • Forum: Plumbing Jobs | The Job-board
  20. M

    changing rads and valves

    please could someone remind me of the routine for changing a rad and valves without draining the system.i`ve read it on here before and it involves blanking off the vent,as part of the procedure. thanks a lot.
    • malc
    • Thread
    • air air vent bleed central heating system changing cold radiator cylinder drain expansion flow hot rads loft open vented pipe pipes remove screw system tank valve valves vent water
    • Replies: 2
    • Forum: Plumbing Jobs | The Job-board
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