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2. Piping and plumbing fitting - Wikipedia

   en.wikipedia.org/wiki/Piping_and_plumbing_fitting

   Fittings allow multiple pipes to be connected to cover longer distances, increase or decrease the size of the pipe or tube, or extend a network by branching, and make possible more complex systems than could be achieved with only individual pipes. Valves are specialized fittings that permit regulating the flow of fluid within a plumbing system.

3. Hose coupling - Wikipedia

   en.wikipedia.org/wiki/Hose_coupling

   The "Air King" [14] universal air hose coupling, also known as a "Chicago style" fitting, is malleable iron or brass "quarter turn" "sexless coupling" usually found on large pneumatic tools like jackhammers. [6] The fitting is considered "universal", because a common two-lug head is used on all sizes ranging from 0.25 to 1 inch (6 to 25 mm).

4. Engineering drawing abbreviations and symbols - Wikipedia

   en.wikipedia.org/wiki/Engineering_drawing...

   press fit: A fastening or mating between two parts which is achieved by friction after the parts are pushed together. PSI: pounds per square inch: A unit of measurement for pressure. See also KSI. PTFE: polytetrafluoroethylene: Also well known by the brand name Teflon. PVC: polyvinyl chloride

5. Valve actuator - Wikipedia

   en.wikipedia.org/wiki/Valve_actuator

   After receiving an operation command, the actuator moves the valve in direction OPEN or CLOSE. When reaching the end position, an automatic switch-off procedure is started. Two fundamentally different switch-off mechanisms can be used. The controls switch off the actuator as soon as the set tripping point has been reached. This is called limit ...

6. British Standard Pipe - Wikipedia

   en.wikipedia.org/wiki/British_Standard_Pipe

   British Standard Pipe (BSP) is a set of technical standards for screw threads that has been adopted internationally for interconnecting and sealing pipes and fittings by mating an external thread with an internal (female) thread.

7. RFK Jr.'s lawyer and top ally asked FDA to revoke approval of ...

   www.aol.com/rfk-jr-lawyer-top-ally-184759000.html

   Robert F. Kennedy Jr.'s personal attorney previously lobbied the Food and Drug Administration to revoke its approval of the polio vaccine, highlighting an influential Kennedy ally who, sources ...