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  2. Sloan Valve Company - Wikipedia

    en.wikipedia.org/wiki/Sloan_Valve_Company

    However, the original 1906 design has proven so reliable that as of 2012, parts are still available to repair any flushometer ever made. [1] Contemporary (2023) Sloan motion sensor flushometer. In addition to its flush valves based on diaphragm technology, Sloan also introduced piston-type flushometers, including the Crown and the GEM 2.

  3. Flushometer - Wikipedia

    en.wikipedia.org/wiki/Flushometer

    A second valve, placed within the main cylinder valve, releases the water in the topmost pressure chamber when the flush lever is activated, sending the main cylinder valve shooting upwards. The topmost pressure chamber slowly refills through its narrow passageway, pushing the valve cylinder back down gradually.

  4. Check valve - Wikipedia

    en.wikipedia.org/wiki/Check_valve

    A check valve, non-return valve, reflux valve, retention valve, foot valve, or one-way valve is a valve that normally allows fluid (liquid or gas) to flow through it in only one direction. [1] Check valves are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave. There are various ...

  5. William Elvis Sloan - Wikipedia

    en.wikipedia.org/wiki/William_Elvis_Sloan

    William Elvis Sloan I (October 1867 – June 25, 1961) invented the Flushometer flushing mechanism for toilets and urinals. It is installed in millions of commercial, institutional and industrial restrooms worldwide.

  6. Relief valve - Wikipedia

    en.wikipedia.org/wiki/Relief_valve

    A relief valve DN25 on cooling water pipe from heat exchanger Schematic diagram of a conventional spring-loaded pressure relief valve. A relief valve or pressure relief valve (PRV) is a type of safety valve used to control or limit the pressure in a system; excessive pressure might otherwise build up and create a process upset, instrument or equipment failure, explosion, or fire.

  7. Valve guide - Wikipedia

    en.wikipedia.org/wiki/Valve_guide

    Powder metallurgy materials are also commonly used in the manufacture of valve guides, which have the advantages of flexible material composition and the self-lubricating properties. [2] The clearance between the inner diameter of the valve guide and the outer diameter of the poppet valve stem is critical for the proper performance of an engine.

  8. Downhole safety valve - Wikipedia

    en.wikipedia.org/wiki/Downhole_safety_valve

    The full name for this most common type of downhole safety valve is a Tubing Retrievable Surface Controlled Sub-Surface Valve, shortened in completion diagrams to TRSCSSV. If a tubing retrievable valve fails, rather than go to the expense of a workover, a "wireline retrievable" valve may be used instead.

  9. Ball valve - Wikipedia

    en.wikipedia.org/wiki/Ball_valve

    A full bore (sometimes full port) ball valve has an oversized ball so that the hole in the ball is the same size as the pipeline resulting in lower friction loss. Flow is unrestricted but the valve is larger and more expensive so this is only used where free flow is required, for example in pipelines that require pigging .