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fitting

Curve fitting is the process of constructing a curve, or mathematical function, that has the best fit to a series of data points, possibly subject to constraints. Curve fitting can involve either interpolation, where an exact fit to the data is required, or smoothing, in which a "smooth" function is constructed that approximately fits the data. A related topic is regression analysis, which focuses more on questions of statistical inference such as how much uncertainty is present in a curve that is fit to data observed with random errors. Fitted curves can be used as an aid for data visualization, to infer values of a function where no data are available, and to summarize the relationships among two or more variables. Extrapolation refers to the use of a fitted curve beyond the range of the observed data, and is subject to a degree of uncertainty since it may reflect the method used to construct the curve as much as it reflects the observed data.

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  1. P

    22mm Fitting, thread size please ?

    Hello. Could anyone please advise ? What is the thread of a standard ( as used in UK ) 22mm compression fitting ? It appears to be 14 tpi but is slightly larger than 3/4 bsp. Thank you, Pete.
    • Peter3
    • Thread
    • 22mm america fitting please size thread usa
    • Replies: 4
    • Forum: USA
  2. R

    Replacement fitting for heating oil fuel supply

    I need to replace this fitting that is connected to the heating oil fuel supply to my boiler, can anyone recommend a supplier and also what what is this component known as, so that I order the correct part. TIA
    • RDarbyshire
    • Thread
    • america central heating system fitting heating oil replacement supply usa
    • Replies: 1
    • Forum: USA
  3. DuncanM

    Fitting auto air vent

    Been advised to fit an AAV on return of a sealed system to try and keep air out of the HEX as it keeps error coding about circulation. Power flushed the system already, this is the next step. Anyway, usually fit AAV on positive side of pump so how far away from pump to make sure AAV does not...
  4. Bogart

    Tectite slip fitting

    Trying to use a 28mm tectite slip coupling. Mangaged to get it over the pipe push it down, with some effort, but am damned if I can get it to come back. Am using the demounting tool and the plastic collar is all the way in but am damned if I can get it to come back on itself.
    • Bogart
    • Thread
    • america fitting usa
    • Replies: 7
    • Forum: USA
  5. Bogart

    Tectite fitting for tight space

    Need to use a couple of 28mm tectite fitting, space very limited so soldering is out. Looking on the Peglar site there seems so many that look the same. Some they state as slip fittings, how do they work on a grab ring fitting?
    • Bogart
    • Thread
    • america fitting space tight usa
    • Replies: 11
    • Forum: USA
  6. D

    Sink fitting pipe question

    Hi all, Been trying to fit new sink and move from pillar taps to a mixer. Previous piping was all rigid pvc with push fittings (not sure if I'm getting the lingo right). Went to toolstation to buy flexi-hoses to connect the new tap and the pipes and they sold me ones with an apparent push fit...
    • DannyC
    • Thread
    • america fitting pipe question sink usa
    • Replies: 2
    • Forum: USA
  7. B

    Plastic pipe thread snapped off inside compression fitting - how to remove?

    Hi The fitting is brass (though doesn't look it in photo), the stuck plastic threaded pipe section is off the bottom of a standard ballcock assembly (bottom inlet) . It's snapped very cleanly, dead level with the nut. So, any smart ideas on how to get it out? Thanks
    • Barney
    • Thread
    • america compression fitting inside pipe plastic plastic pipe remove snapped thread usa
    • Replies: 2
    • Forum: USA
  8. B

    Favourite fitting and PE pipe

    Hello PFM's, I was wondering what was everyone's fav. fittings for tieing into rads and general central heating system design. My judging considerations are 1.speed of install. 2.longevity of the fittings, likely to fail. 3.footprint, EG. Find JG etc. can be a bit bulky under shallow floors...
    • Bazzatron
    • Thread
    • america fitting pipe usa
    • Replies: 4
    • Forum: USA
  9. D

    Gas fitting Garage Heater

    Hi. I bought a house that has a pool heater and the gas line for it is shown here. I also want to put a natural gas garage heater in. My question is: is that piece of pipe coming up where it is capped off where the installer will tie into and go up the side of my garage? That back corner...
    • DDC
    • Thread
    • america fitting garage gas heater usa
    • Replies: 3
    • Forum: USA
  10. D

    What is this fitting called?

    I had to replace a perished washer in my toilet cistern and I had to remove the cistern from the toilet itself. In the process of detaching the water pipe I had to unscrew a white plastic cowling / covering and it has slid down the pipe and now I can't move it back upwards to re-secure(!). I...
    • djmwr
    • Thread
    • america called fitting usa
    • Replies: 5
    • Forum: USA
  11. P

    Compression fitting value blown off from the pipe

    Hello, I installed 2 compression valve fitting for my kitchen sink about 10 days ago, after I cut off the 2 old valve with pipe. I put teflon tape around the olive after I found leaks from the fitting(which had been proven wrong!), with oil around the thread. It had been working fine until this...
    • Plumb Zero
    • Thread
    • america blown compression fitting pipe usa value
    • Replies: 14
    • Forum: USA
  12. A

    Boiler Programmer fitting advice

    Hi Looking for help. My sisters boiler programmer is faulty, so I've bought a like for like programmer (Worcester Bosch DT20RF), think her boiler is a Worcester Bosch Greenstar 24i/28i Junior. Seen a video online that showed a few seconds of installation, I.e. taking old programmer out. Looked...
    • ard2dabone
    • Thread
    • advice america boiler central heating system fitting help programmer usa
    • Replies: 4
    • Forum: USA
  13. Dark Eyes

    Fitting a Blanking Cap to a redundant waste pipe

    Hello folks I have what seems to be a standard 40mm white PVC pipe that used to hold the washing machine drain hose, which I wanted to cap off to avoid any water overflowing from (as my kitchen drainage seem to get blocked up easily, and it will probably be replaced within the next year). I...
    • Dark Eyes
    • Thread
    • america blanking fitting pipe redundant usa waste waste pipe
    • Replies: 3
    • Forum: USA
  14. M

    Advice for bathroom floor and fitting shower Tray

    Hi, Im fitting a new bathroom and am after some advice. As you can see in the pictures the current floor is a mixture of 18mm chipboard and OSB board. Im installing underfloor heating and then tiles on top. What should I put on the floor as ive read lots of conflicting advice? Does it need...
    • marc1977
    • Thread
    • advice bathroom fitting floor shower shower tray tray
    • Replies: 5
    • Forum: Australia
  15. centralheatking

    Fan Flue Boiler with good internal fitting arrangements

    On behalf of a friend we are looking for which fan flued ng combi or system boiler has a good fitting from inside only. The outside is in Bath and 3/4 Floors up but the outside is above the River Avon so no ladders too high and no scaffold...unless expensive suspended stuff. around 20kw to 30kw...
  16. hammers4spanner

    Fitting a worcester 2000 boiler

    Fitted one of these today and was a bit flumoxed on the valve set up where they connect onto the boiler. In a nutshell i couldnt fit a spanner in to tighten them up enough and the prv connection seemed utter pita. They electric supply isnt long enough either for what i needed and you cant...
  17. R

    Leak at this fitting. Any suggestions?

    Hello, I've got a leak on this part of my central heating, at the fitting (no idea what it would be called, Feed end Fitting?). Has anyone had a similar issue? I've attempted to use LSX, Plummers Mate evo, and Fernox F4, without any success. I'm considering solder as a last resort, but the...
  18. M

    Fitting a Mira 88 service kit

    Has anyone fitted a service kit on a mira 88? Watched a video on it on YouTube looks a bit of a nightmare, that many orings and cir clips. The shower is leaking out of the body when operated.
  19. Y

    Fitting Vellamo touch Kitchen taps

    I have been trying to fit a Vellamo touch tap but can't get water flow through, I can hear the tap clicking but nothing happens.
  20. S

    Are deaerators really worth fitting?

    Hi All I'm only a DIY'er, I have always had air in my system, I thought it was the result of the 20 year old Glow Worm boiler and corrosion from that. During the summer I had a new Atag boiler fitted by one of their recognised fitters. Really pleased with the boiler but still seem to be getting...
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