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Short-radius (or regular) 45° elbow (copper sweat) Long-radius (or sweep) 90° elbow (copper sweat) An elbow is installed between two lengths of pipe (or tubing) to allow a change of direction, usually a 90° or 45° angle; 22.5° elbows are also available.
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.
Among the common plastics, PVC is unique in its acceptance of large amounts of plasticizer with gradual changes in physical properties from a rigid solid to a soft gel, [20] and almost 90% of all plasticizer production is used in making flexible PVC. [21] [22] The majority is used in films and cable sheathing. [23]
It has a wide temperature range, from -40 °C to +60 °C. ABS is a thermoplastic material and was originally developed in the early 1950s for use in oil fields and the chemical industry. The variability of the material and its relative cost effectiveness has made it a popular engineering plastic.
CPVC can withstand corrosive water at temperatures greater than PVC, typically greater by 40–50 °C (greater by 72–90 °F), contributing to its popularity as a material for water-piping systems in residential and commercial construction. CPVC maximal operating temperature peaks at 200 °F (93 °C).
It is an engineered product, manufactured primarily from polyvinyl chloride (PVC) resin. In the UK and New Zealand a similar material is known as uPVC weatherboarding . Approximately 80 percent of its weight is PVC resin, with the remaining 20 percent being ingredients that impart color, opacity, gloss, impact resistance, flexibility, and ...
For example, a bat that is 34 inches (86 cm) long and weighs 31 ounces (880 g) has a bat drop of –3. In general, bats with a larger bat drop (i.e., lighter) are easier to swing, and bats with a smaller bat drop (i.e., heavier) can produce faster ball velocity, though these results depend on the batter's ability.
It is available in densities varying from 3 to 25 pounds per cubic foot (0.048 to 0.400 g/cm 3). [ 3 ] It has a low flammability rate. [ 4 ] A universal cross-linked closed-cell PVC that was used in a comparison with three heat-resistant cross-linked had a glass temperature of 83.2 °C.