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James Watt used a butterfly valve in his steam engine prototypes. With advances in material manufacturing and technology, butterfly valves could be made smaller and withstand more-extreme temperatures. After World War II, synthetic rubbers were used in the sealer members, allowing the butterfly valve to be used in many more industries. [4]
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 ...
According to API Standards 600, "Steel Gate Valve-Flanged and Butt-welding Ends, Bolted Bonnets", the trim consists of stem, seating surface in the body, gate seating surface, bushing or a deposited weld for the backseat and stem hole guide, and small internal parts that normally contact the service fluid, excluding the pin that is used to make ...
The two ports may be oriented straight across from each other or anywhere on the body, [4] or oriented at an angle (such as a 90°). [5] Globe valves with ports at such an angle are called angle globe valves. Globe valves are mainly used for corrosive or highly viscous fluids that solidify at room temperature.
H. Mueller, Gun Shop building, circa 1859. Mueller Co. was founded in 1857 by Hieronymus Mueller in Decatur, Illinois as "H. Mueller, Gun Shop". [3] Mueller closed the business briefly in 1858 to prospect for gold in Colorado, but returned to his business not long after, expanding it to include sewing machine and clock repairs and the sale of hunting and fishing equipment in addition to ...
Swirl flap principle in a four-valve engine. A swirl flap is a small butterfly valve fitted to four-stroke internal combustion engines with at least two intake valves.It is installed inside or just before one of a cylinder's two intake ports, allowing to throttle its intake port's air flow, causing a swirl in the other intake port not fitted with a swirl flap.