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The Southern California Linux Expo (SCALE) is an annual Linux, open source and free software conference held in Los Angeles, California, since 2002. Despite having Linux in its name, SCALE covers all open source operating systems and software. It is a volunteer-run event.
The event features an expo floor with both commercial and non-profit exhibitors, as well as 4 days of seminars on the topic of Linux and Open Source software. Sessions and presentations cover a broad spectrum of topics and technical levels.
SCALE grew out of a series of LUGFests put on by the Simi Conejo Linux Users Group in the late 90s. There were four of them, held every 6 months at the Nortel development facility in Simi Valley, California. They ended when Nortel closed that facility in 2001. Subsequently, members from SCLUG, USCLUG and UCLALUG organized to create a more regional event, which they named the Southern California Linux Expo.
Companies, organizations and projects represented at SCALE include Linux-based projects such as Debian, Gentoo Linux, the Fedora Project, KDE and GNOME, other open-source operating systems including NetBSD and FreeBSD, software projects such as Django, open-source database systems such as MySQL and PostgreSQL, other open-source applications such as Drupal, Inkscape, MythTV and The Document Foundation, activist organizations such as Software Freedom Law Center and the Electronic Frontier Foundation, major technology companies such as IBM, HP and Sharp, web companies including Google, Facebook and eHarmony, and internet projects including OpenStreetMap.

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  1. S

    Aqua scale inhibitor on cylinder cold fed?

    Hi all, As you may know i have no hot water from Tribune Premier tank and as i checked the pressure reducing valve & strainer and now think its got to be the cylinder is scaled up. I have noticed there is also a Aqua dial combi scale inhibitor between the pressure reducing valve and the...
    • Simon.h
    • Thread
    • cold cylinder fed inhibitor pressure reducing scale scale inhibitor scaled valve
    • Replies: 12
    • Forum: Plumbing Jobs | The Job-board
  2. P

    Worscter 28 SI FGA Readings off the scale

    997PPM Ratio of 0.0126, check BP, fine, all seals in combustion chamber, fine, it has flame lift, could this be due to the 100mph winds we are getting as it has a vertical flue? Gunna take flue apart and inspect tomorrow.....anyone come across this before......
  3. S

    bristan basin mixer

    Prism Basin Mixer with Eco Click Chrome Plated | Prism Bathroom | Bristan has any of you had change a cartridge on one off this ,my question is what tool have you use to undo the screw which holds the cartridge
  4. B

    Showerhead : constantly clogged : hard brown scale

    Hi to all, Any suggestions / solution re the following problem would be greatly appreciated (I will try to give as much detail as I can)... My showerhead (Electric Pumped Triton t90) is constantly getting clogged with a hard brown scale (to look at is very like little bits of tobacco). Now...
  5. S

    lime scale build up in copper pipes

    My customer told me that his pipe work are blocked up with lime scale and he want me to install a new water softener on the system. As far as i understand the filter will treat the incoming water but will it help to clear the lime scale buildup in the pipes already?
  6. T

    Best Limescale Treatment System

    Hi Having just had my CH powerwashed and the heat exchanger replaced at some cost, I’d be interested to hear which is the best/cost effective limescale prevention system out there at the moment. I am looking for something that will tackle both CH and HW – also Cold Water if possible as have...
  7. G

    Alpha cd35c intermittant hot water (pulsing)

    HI Im having problems with the above boiler ! ch heating is fine but the hot water is hot cold hot cold etc whenever the dhw tap is on, i was told it was a simple fix involving the diverter valve diaphram BUT i looked in there and looking at it its not the conventional valve we all know are...
  8. M

    Noisy boiler, Is it scale or something more sinister (Link to video)

    We moved into our house a year ago. Before that it was more or less unoccupied for 3 years. The boiler has always been a bit noisy but we are noticing it even more now as the kitchen ceiling is down at the moment exposing all the pipework. I'm wondering if it is scale and a powerflush would...
  9. M

    Cold water feed to sink, bath and toilet cistern blocked

    Hello, I'm having problems with the cold water feed from the storage tank in the loft to the bathroom on the first floor. The hot water feed to both bath and sink is fine and the hot water tank seems to fill fine. Fortunately the electric shower has a separate feed which comes direct of the...
    • MidfieldGeneral
    • Thread
    • bath blocked cistern cold cold water first oil scale sink toilet valve water which
    • Replies: 10
    • Forum: Plumbing Jobs | The Job-board
  10. F

    Baxi 105e - Pressure valve off the scale...

    Hi All Just wondered if you could advise - I had a new PCB put in my Baxi 105e the other day - now when I put the heating on, the pressure gauge goes up to max, right round the dial. I'm thinking that the PCB ain't conected correctly, otherwise the relief valve would have come on by now? Bit...
    • Freezincold
    • Thread
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    • Replies: 5
    • Forum: Plumbing Jobs | The Job-board
  11. H

    Inline scale inhibitor

    Hi all Just wondering if any of you have any experience of supplying/or fitting inline magnetic or electrolytic scale inhibitors. Your experiences/opinions welcomed.
    • helpsy
    • Thread
    • air fitting inhibitor inline install magnetite mains pipes pump scale scale inhibitor supply system tee valve water
    • Replies: 3
    • Forum: Plumbing Jobs | The Job-board
  12. C

    Electrolytic scale reducer versus polyphosphate in hard water areas

    Does anyone have a experience with electrolytic scale reducers in hard water areas (400ppm) versus polyphosphate (Combiguard)? I like the idea of the SESI as it's basically a fit and forget (10-15 years) and there's also no annual maintenance cost.
  13. V

    Very Hard Red Scale bulid up in toilet bowls

    Hi all, Has anyone come across a problem with rapid build up of Red/Brown build up up of almost impossible to shift scale on toilet bowls. I have had the water tested by the local water board,they say it is ok. The pipes appear to be all copper. I am pulling my hair out for what to do...
    • vanguard101
    • Thread
    • cistern copper inside mains metal oil pipes polish problem remove scale system tank toilet water
    • Replies: 5
    • Forum: Plumbing Jobs | The Job-board
  14. F

    advice please on Permutit Scale inhibitor

    Hey guys Got and install on next week and normally I fit combimates on the cold mains in but I recently come across on the internet a Permutit Scale Inhibitor and I was wondering if any of you have had any experience with them and would recommend me go for it or steer clear of them please...
    • F_P_H
    • Thread
    • advice cold inhibitor install internet mains please scale scale inhibitor
    • Replies: 0
    • Forum: Plumbing Jobs | The Job-board
  15. A

    Electric Scale Inhibitors

    Hi all Has anyone an opinion as to the effectiveness of these gizmos. My 5 bedroom house has a megaflow system installed to serve 3 showers. The pressure at the shower head has certainly reduced over the last couple of years to not much more than normal pressure rather than the mains pressure...
    • Andy Tarrant
    • Thread
    • connections cylinder electric head mains megaflow pipe pressure scale shower head showers system water
    • Replies: 1
    • Forum: Plumbing Jobs | The Job-board
  16. D

    scale reducers

    HI all, I wonder if anyone can help? Wanted to know what is the best scale reducers to use? So many to choose from. I've installed scale reducers to mains fed cylinders and boilers. But what would be the best to install for whole house uses? :confused:
  17. A

    scale inhibitor?

    What is the preference out there on either the inline magnetic or electrolytic scale inihibitors? Would you guys recommend differently if it was for whole house protection as opposed to just boiler protection? Lets assume London so hard water. cheers
    • andekoch
    • Thread
    • boiler damage flow hose inhibitor london problem salamander scale scale inhibitor stainless temperature water work
    • Replies: 4
    • Forum: Plumbing Jobs | The Job-board
  18. E

    Scale Inhibitor Fitting

    Hi All,Ive been asked to fit a inline electrolytic scale inhibitor by a mate.i know they are meant to be fitted after the stopcock for the property and before the system branches but the poles who did the renovation to the flat removed the old one and never fitted a new stopcock! and where the...
    • ESplumber
    • Thread
    • cold cold water cold water storage copper drain fitting gas hot hot water inhibitor london pipes plumbing polish pressure pressure problem problem public regulations renovation scale scale inhibitor supply tank tap water water pressure work
    • Replies: 18
    • Forum: Plumbing Jobs | The Job-board
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