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High-pressure ball valves are often used in hydraulic systems, so they are also known as hydraulic ball valves. Ball valves in sizes up to 2 inches (51 mm) generally come in a single piece, two or three-piece designs. One-piece ball valves are almost always reduced bore, are relatively inexpensive, and are generally replaced instead of repaired.
The 361-cubic-inch (5.9 L) 361 was released in 1939 alongside the 426 and 451. The 361 was discontinued in 1949 and replaced by the 360 "Group 2" engine. The 360 and 361 shared the exact same 4 + 1 ⁄ 8 inches (100 mm) bore and 4 + 1 ⁄ 2 inches (110 mm) stroke, but the 361 used the larger "Group 3" block. It produced a maximum 136 hp @ 3000 ...
The Iron Duke engine (also called 151, 2500, Pontiac 2.5, and Tech IV) is a 151 cu in (2.5 L) straight-4 piston engine built by the Pontiac Motor Division of General Motors from 1977 until 1993. Originally developed as Pontiac's new economy car engine, it was used in a wide variety of vehicles across GM's lineup in the 1980s as well as supplied ...
The 290 heads use smaller valves, 1.787 in (45.4 mm) intake and 1.406 in (35.7 mm) exhaust, corresponding with its small bore. The 343 and the AMX 390 use the same larger valve heads, 2.025 in (51.4 mm) intake and 1.625 in (41.3 mm) exhaust.
Millions of engines were produced. They became the most common 1/2A Class 0.049 cubic inch engine in the world, and probably still are today. Although the production of the engines ceased some years ago, engines made as far back as the 1950s are still sold "as new" and are in abundance on eBay worldwide.
The blue valve body is visible in-line with the pipe. The valve actuator opens or closes the butterfly disc of the valve based on electrical signals sent to the actuator. Another valve actuator is visible in the background, with windows to indicate the valve position. A valve actuator is the mechanism for opening and closing a valve. Manually ...
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