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lever

A lever ( or US: ) is a simple machine consisting of a beam or rigid rod pivoted at a fixed hinge, or fulcrum. A lever is a rigid body capable of rotating on a point on itself. On the basis of the locations of fulcrum, load and effort, the lever is divided into three types. Also, leverage is mechanical advantage gained in a system. It is one of the six simple machines identified by Renaissance scientists. A lever amplifies an input force to provide a greater output force, which is said to provide leverage. The ratio of the output force to the input force is the mechanical advantage of the lever. As such, the lever is a mechanical advantage device, trading off force against movement. The formula for mechanical advantage of a lever is




Load


/


Effort



{\displaystyle {\text{Load}}/{\text{Effort}}}

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  1. W

    How do lever tap conversion kits work?

    Like these: Sink/Basin Lever Tap Conversion Kit - Bathroom Plumbing - Plumbing -Tools, Electrical & Plumbing - Wickes Because surely the lever wouldn't manage to open the tap fully with a quarter turn since they're not ceramic disc taps..?
  2. R

    Toilet Syphons

    Where do you guys get your toilet Syphons from? I've gotta go and replace one in a concealed cistern on Friday and have heard bad things about the opella ones in screwfix!
  3. B

    mini pipe bender

    which mini pipe benders are the best got my 3 in one 6/8/10mm bender out the other day to bend a piece 0f 8mm more than 90 degrees and it just flattened the pipe are the irwin and rothenburghers the same ant
  4. cr0ft

    Using a full-bore lever valve as a stopcock.

    Hi all. I did my unvented course today and asked the question about using a full-bore lever valve as a stopcock. The guy who owns the training centre was teaching us and he said that it's not illegal to fit full-bore lever valves in place of stopcocks now. The water in the riser main is...
  5. O

    Which lever ball valve??....or gate valve???

    I am bringing water up from a well, via an electric pump.. 2.2 bars..but the EN331 22mm valves keep bursting, especially over winter, even though everything is disconnected... is there a better valve??? Any help, appreciated. Alan
  6. H

    Mains Stopcock has been replace by my builder, is that right?

    Hi, I wonder if someone could give me some advice please? I have been having some work done in my house. My builder told me because of a slow leak in the main water pipe to my property he had to replace the old lead pipe,which he did. The stopcock to the water mains was under the front door...
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  7. M

    Leaking Top Lever Tap - Any Advice?

    I've a Blanco branded monoblock top lever tap that's leaking through the top lever. The lever itself comes off easily enough and opens onto a small well with a steel ball joint and the water is pressing out through this area as the lever is moved. Do I need to scrap the tap and buy another...
  8. B

    single lever tap

    have a Nabis single lever tap in my bathroom hand basin but it is getting very difficult to move it either to hot and cold or up and down. I took the small screw cover off which is in the tap pillar but could not see a screw there to remove - I was then going to take the top of the tap off to...
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    • Forum: Plumbing Jobs | The Job-board
  9. N

    Can somebody identify this toilet lever.

    Can somebody identify this toilet lever for me. I've had look at lunns.net but I can't figure out which one it is. Thanks in advance
  10. M

    Heritage Dorchester Deck Bath Shower Mixer lever loose?

    Hello. The lever which allows me to switch from shower spray to bath filler tap feels very loose and does not seem to engage when I move it from one side to the other such that I only get the filler tap working and I cannot get anything through the shower head (so cannot wash my hair). All I...
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  11. 2

    Monoblock lever type tap stuck on

    I have isolated the supply and stripped the tap down to a blue circular plastic cylinder with a "ratcheted" top from where the lever mechanism comes out. I can't unscrew it by hand or pull it out to see what the problem is. Is there some special too to engage the ratchet and unscrew?
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  12. Z

    Replacement Monoblock Tap Lever - what type?

    I've got hold of an ex-display tap which is missing it's lever, but I can't find a replacement that fits. Does anyone know what brand of tap uses this type of lever? I looked in B&Q and Homebase but all the levers there screwed into the tap - mine looks like a larger lever fits over the tiny...
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