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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. T

    Fitting square outlet elbow to a solid wall. How best to secure?

    Hi all. I've got a square elbow outlet that I want to plumb in next to my wall tap. Might sound like a daft question but it's got a securing nut so o How on earth do I secure it to a solid wall. I could reposition to a stud wall that I have access to to screw secure but I don't really want it...
    • Timanfiya
    • Thread
    • america elbow fitting outlet solid square usa wall
    • Replies: 4
    • Forum: USA
  2. D

    Internally shallower 3/4" Iron fitting needed, and weep on 3/4 female nut on main.

    I wonder if anyone can help, I've tried several plumbers merchants to no avail. I have removed an old stopcock, (which seized long ago, with a newer stopcock just above) as it had been leaking from several places, mainly at the bottom where it joined the 3/4" threaded female end on rising main...
    • Deleted member 123633
    • Thread
    • 3/4 iron 3/4inch america female fitting iron main needed nut usa
    • Replies: 3
    • Forum: USA
  3. M

    Fitting an external tap at a commercial premise

    I have been asked to fit an external tap at a mental health facility to enable the external paths to be hosed down. What form of back syphoning measure is sufficient for this installation?
  4. J

    To LSX or not on compression pipe fitting?

    Going to put in new iso valves and on the compression fitting should a smidgen of LSX be used around the olive? On the other end will be fitting tap tail adaptors again using olive and smidgen of LSX. https://www.toolstation.com/tap-tail-adaptors/p14081 So is there any downside in using LSX...
    • Justice League
    • Thread
    • america compression fitting lsx pipe pipe fitting usa
    • Replies: 11
    • Forum: USA
  5. T

    Rotatimg soil pipe fitting

    Hi. Could anyone advise if this is a push fit fitting that I can rotate? If I had to cut out the section I'd have to do from below in the kitchen which might be problematic. I've applied some wd40 in prep for when I disconnect toilet but not sure if it will move. Thanks
  6. S

    Shower waste fitting vent?

    The old shower waste that was removed from the bathroom had a section where the waste went from 40 up to 50mm with an adapter. The pipes were run above floor and boxed in. Along a 2.5mish run There was this part just before the transition from 40 to 50 mm Going to be running my new shower...
  7. L

    Soil pipe to sink fitting?

    Morning, sorry for such a basic question but I I don't know what fitting to use! I have a fitted toilet which is being removed and a small kitchen sink being put in place. The soil pipe is coming out of the wall horizontally. I'm used to a boss fitting but I need to blank this? I saw a fitting...
    • Luggsey
    • Thread
    • america fitting pipe sink soil soil pipe usa
    • Replies: 7
    • Forum: USA
  8. S

    Does pan need to fully-insert into soil pipe?

    It’s time to buy a new toilet and I need to ensure that the one i buy will meet up correctly with the soil pipe outlet (sunk in floor), such that the cistern sits against the wall. My question is, is it necessary for a pan spigot to fully insert into the soil pipe connector (McAlpine WC-CON8)...
  9. R

    Fitting a new shower waste - gasket under flange or not?

    I managed to get the broken shower waste body out of the trap. I'm about to fit a new waste, a much more robust brass item. The trap has a big rubber gasket designed to sit flush against the underside of the shower tray. Is it a good idea for me to fit a rubber gasket between the flange on...
  10. C

    Why has pressure dropped throughout the house after fitting an outside tap?

    Hi, I fitted an outside tap kit yesterday, it works fine but pressure has dropped a lot in all other taps?
    • Costamilly
    • Thread
    • after america dropped fitting house outside outside tap pressure tap usa
    • Replies: 6
    • Forum: USA
  11. S

    Towel Rail Valve Fitting

    I have spent an inordinate amount of time trying to work out the best approach to fitting valves to my new towel rail, but i just don’t have the experience to know the best approach and would appreciate input from you guys. If i get this wrong, it’s going to be a major PITA to correct...
    • smallsteve
    • Thread
    • corner fitting push fit rail straight towel towel radiator towel rail valve
    • Replies: 13
    • Forum: DIY Plumbing Forum
  12. O

    Removing a radiator with a compression fitting between valve and radiator tail rather than a union fitting

    Hi, I am replacing some radiators and using new fittings. Most radiator valves now come with a compression interface rather than a union interface to the radiator tail. It seems to me that it would be rather difficult, if not impossible, to remove a radiator at a later date for decorating when...
    • OldHam
    • Thread
    • between compression fitting radiator rather removing tail union valve
    • Replies: 3
    • Forum: DIY Plumbing Forum
  13. S

    Wrong fitting or bad design?

    Just mocking up what fittings to use for my shower valve to see that its not possible to fully fit an elbow to the hot inlet as it is fouled by the outlet boss. I can fit a straight connection and elbow instead but just wondering if its actually the wrong fitting that ive picked? And its only...
  14. P

    Shower hose on tap without fitting

    Hi everyone, my bath tap has no fitting on its end. How could I connect a shower hose? Thanks!
    • PlumbItUp
    • Thread
    • america connector fitting hose shower shower attachment shower hose tap usa without
    • Replies: 5
    • Forum: USA
  15. P

    Look seat screws just spin, no access to underneath.

    I want to change over a toilet seat but have come across an issue. The screws holding the connection to the pan simply rotate, either left or right. Because of the pan design and location - I cannot access the back to see what's happening under the fitting. Image0 - the underside, no access...
    • Plumbum
    • Thread
    • access america fitting pan screws toilet underneath usa
    • Replies: 3
    • Forum: USA
  16. D

    Fitting advice for 2-in-1 Combination toilet/basin

    Good evening all, I bought a combo potty with basin from Bathroom republic via eBay and I'm about to set about fitting it. It was advertised as a 'Beth' toilet - I think it may be Chinese and there is no maker's name to work with (pls see pic). In the cistern is new fangled (to me)...
  17. M

    Whats this fitting

    Hi - can anyone identify this fitting and its purpose - it is located on the downstream side of a central heating pump. It is fed by 28mm copper but runs into 22mm copper. The lettering is SMC and it has a directional arrow on it. on the far side ( difficult to get a photo) there is a...
    • Monflyer
    • Thread
    • america fitting usa whats
    • Replies: 8
    • Forum: USA
  18. V

    Fitting Franke Fuji kitchen tap

    I am going to be fitting a Franke Fuji tap at my daughter’s. The tap comes with the hot and cold flexible tails, the hot has a standard nut and rubber washer on the end for connecting to a male compression fitting but the cold has a different end ( I think because it has a non return valve...
    • Vicdiy
    • Thread
    • america fitting franke kitchen tap usa
    • Replies: 1
    • Forum: USA
  19. Z

    Fitting identification

    I need to reposition this Sensus water meter but the 3/4 inch copper pipe on both the inlet and outlet is too short. Rather than heating up each fitting to remove the stubs, I would prefer to replace each fitting with new in the new arrangement. My problem is that I don't know how to identify...
    • Zopkios
    • Thread
    • america fitting identification usa
    • Replies: 3
    • Forum: USA
  20. cdel2005

    lead lock fitting

    hi guys could anyone please tell me what order these things go onto lead pipe 1 locking nut 2 3 4 cheers
    • cdel2005
    • Thread
    • america fitting lead usa
    • Replies: 6
    • Forum: USA
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