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2. Piping and plumbing fitting - Wikipedia

   en.wikipedia.org/wiki/Piping_and_plumbing_fitting

   Elbows are also categorized by length. The radius of curvature of a long-radius (LR) elbow is 1.5 times the pipe diameter, but a short-radius (SR) elbow has a radius equal to the pipe diameter. Wide available short elbows are typically used in pressurized systems and physically tight locations.

3. Street elbow - Wikipedia

   en.wikipedia.org/wiki/Street_elbow

   Street elbows are available with bend angles of 90°, 45°, and 22.5°. They can be used in many plumbing applications, including water supply, drainage, sewers, vents, central vacuum systems, compressed air and gas lines, heating and air conditioning, sump pump drains, and other locations where plumbing fittings would be used to join sections of pipe.

4. Sleeve (construction) - Wikipedia

   en.wikipedia.org/wiki/Sleeve_(construction)

   For example, a 4" pipe, with 1" of thermal insulation makes a 6" penetrant (1" pipe covering on each side of the pipe), plus two pipe sizes = an 8" sleeve, creating a 1" annulus. In case of insulated piping, the size of the insulation must be taken into account for the intended firestop certification listing .

5. The Grampa's Weeder will save your back and knees - AOL

   www.aol.com/lifestyle/grampas-weeder-walmart...

   Made of powder-coated steel and strong bamboo, Grampa's Weeder has a four-claw steel head that loosens and lifts stubborn weeds with very little elbow grease. The 45-inch handle means you can do ...

6. Plumbing - Wikipedia

   en.wikipedia.org/wiki/Plumbing

   [28] 1/2" L copper has the same outer diameter as 1/2" K or M copper. The same applies to pipe schedules. As a result, a slight increase in pressure losses is realized due to a decrease in flowpath as wall thickness is increased. In other words, 1 foot of 1/2" L copper has slightly less volume than 1 foot of 1/2 M copper. [29]

7. Sleeve - Wikipedia

   en.wikipedia.org/wiki/Sleeve

   1 ⁄ 4-length sleeve or quarter-length sleeve: A sleeve that extends from the shoulder to midway down the biceps and triceps area. 3 ⁄ 4-length sleeve or three-quarter length sleeve: A sleeve that extends from the shoulder to a length midway between the elbow and the wrist. It was common in the United States in the 1950s and again in the ...