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2. Desmodromic valve - Wikipedia

   en.wikipedia.org/wiki/Desmodromic_valve

   The main benefit of the desmodromic system is the prevention of valve float at high rpm. In traditional spring-valve actuation, as engine speed increases, the inertia of the valve will eventually overcome the spring's ability to close it completely before the piston reaches top dead centre (TDC). This can lead to several problems.

3. Ballcock - Wikipedia

   en.wikipedia.org/wiki/Ballcock

   The valve is connected to the incoming water supply, and is opened and closed by the lever which has the float mounted on the end. When the water level rises, the float rises with it; once it rises to a pre-set level, the mechanism forces the lever to close the valve and shut off the water flow.

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5. File:Concentric Float Valve.svg - Wikipedia

   en.wikipedia.org/.../File:Concentric_Float_Valve.svg

   Filled areas to match other diagram. Category:Valves Category:Plumbing Category:Inkscape: 11:36, 23 May 2010: 1,190 × 954 (22 KB) Egmason {{Information |Description={{en|1=The Concentric Float valve opens when the fluid level is low, allowing more fluid to eneter (Figure 1).

6. Float chamber - Wikipedia

   en.wikipedia.org/wiki/Float_chamber

   The valve is often described as a needle valve, although this is a misnomer. A true needle valve uses a tapered needle in a tapered seat, so as to provide fine control over flow rate. The float valve uses a pointed needle against a square-edged seat, to give a positive shut-off. As the float relies on gravity, the chamber must be mounted ...

7. Automatic bleeding valve - Wikipedia

   en.wikipedia.org/wiki/Automatic_bleeding_valve

   Float valve internal operation. Construction is of the usual cast brass housing for plumbing parts, with a threaded connection to the pipework at the base. The top has a small outlet, usually hidden beneath a plastic dust cap. Internally there is a large hollow body, normally filled with water, and containing a float valve. The valve must ...

8. Valve float - Wikipedia

   en.wikipedia.org/wiki/Valve_float

   Stiffer valve springs can help prevent valve float and valve bounce but at the expense of increased friction losses, higher stresses, and more rapid wear in the valvetrain. Various techniques have been used to offset the effect of stiffer springs, such as dual-spring and progressive-sprung valves, roller-tipped tappets, and pneumatic valve ...

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