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2. Glossary of firefighting equipment - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_firefighting...

   Outside stem and yoke valve (OS&Y) Type of gate valve actuator arranged such that the valve stem moves in and out of the handle, thus externally indicating whether the valve is open or shut, unlike the more common gate valve wherein the stem rotates and only the gate moves up and down inside the fixture. Oxyacetylene cutting torch

3. Gate valve - Wikipedia

   en.wikipedia.org/wiki/Gate_valve

   Gate valves may have flanged ends drilled according to pipeline-compatible flange dimensional standards. Gate valves are typically constructed from cast iron, cast carbon steel, ductile iron, gunmetal, stainless steel, alloy steels, and forged steels. All-metal gate valves are used in ultra-high vacuum chambers to isolate regions of the chamber ...

4. List of valves - Wikipedia

   en.wikipedia.org/wiki/List_of_valves

   The inside of an extremely large butterfly valve Duplex ball valve Three check valves in corrosion-resistant Hastelloy Stainless steel gate valve. Valves can be categorized into the following types, based on their operating mechanism: Ball valve, for on–off control without pressure drop. Ideal for quick shut-off, since a 90° turn completely ...

5. Mueller Co. - Wikipedia

   en.wikipedia.org/wiki/Mueller_Co.

   Mueller Co. is a Chattanooga, Tennessee based industrial manufacturing group that manufactures fire hydrants, gate valves, and other water distribution products.Mueller Co. which moved to Chattanooga from Decatur, Illinois in 2010, is the largest supplier of potable water distribution products in North America. [2]

6. Christmas tree (oil well) - Wikipedia

   en.wikipedia.org/wiki/Christmas_tree_(oil_well)

   The two lower valves are called the master valves (upper and lower respectively). Master valves are normally in the fully open position and are never opened or closed when the well is flowing (except in an emergency) to prevent erosion of the valve sealing surfaces. The lower master valve will normally be manually operated, while the upper ...

7. Democratic Sen. Fetterman: ‘I’m not rooting against’ Trump

   www.aol.com/democratic-sen-fetterman-m-not...

   Pennsylvania Democrat Sen. John Fetterman said he hopes President-elect Donald Trump is successful in his second term and that he's not "rooting against him." "If you're rooting against the ...