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2. End-face mechanical seal - Wikipedia

   en.wikipedia.org/wiki/End-face_mechanical_seal

   There are a number of different ways in which “seals” may be classified. Sometimes a reference to a “seal” may be to a sealing system whereas other times the reference is to a device such as a gasket, an O-ring, compression packing, etc. In this article, the reference is to an end-face mechanical seal.

3. Flushometer - Wikipedia

   en.wikipedia.org/wiki/Flushometer

   A narrow passageway leads from the main water supply into the pressure chamber. It is the narrowness of this passage that meters the flow by slowing repressurizing of the pressure chamber after the action of a flush. The diaphragm technology allows the flush valve to open and let water into the bowl. A main cylinder valve operates up and down.

4. Gasket - Wikipedia

   en.wikipedia.org/wiki/Gasket

   Soft gasket is a term that refers to a gasket that is cut from a soft (flexible) sheet material and can easily conform to surface irregularities even when the bolt load is low. Soft gaskets are used in applications such as heat exchangers, compressors, bonnet valve and pipe flanges.

5. AOL.com - News, Sports, Weather, Entertainment, Local & Lifestyle

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   AOL latest headlines, entertainment, sports, articles for business, health and world news.

6. Safety valve - Wikipedia

   en.wikipedia.org/wiki/Safety_valve

   An oxygen safety relief valve DN250-safety valves. A safety valve is a valve that acts as a fail-safe.An example of safety valve is a pressure relief valve (PRV), which automatically releases a substance from a boiler, pressure vessel, or other system, when the pressure or temperature exceeds preset limits.

7. Diving cylinder - Wikipedia

   en.wikipedia.org/wiki/Diving_cylinder

   Valve ejected due to mix up with valve threads 3/4"NPSM and 3/4"BSP(F) caused damage to a dive shop compressor room. [92] A valve ejected during filling due to incompatible thread killed the operator by impact to the chest. [38] A valve failed on a diver's emergency cylinder on a diving support vessel during preparation for a dive injuring five ...