flanged joint

flanged joint

flanged joint
A joint consisting of two companion flanges, bolted together and made leakproof by means of a gasket.
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Benefits of this valve include: significant labor savings as it takes less time to install than flanged-end valves: no flanged joint fasteners to corrode; and the ability to deflect once it's installed, making it ideal for soil that is shifting or settling such as in locations near structures or tanks.
AMERICAN Cast Iron Pipe
It can take all day to unbolt a flanged joint depending on size.
A different groove
Previous flanged joint alignment guidelines were primarily obtained from fabrication specifications (such as ASME B31.3, for example) and did not address the fact that the initial alignment was not as critical as the interrelationship between the initial alignment and the force required to bring the joint into perfect alignment (system stiffness).
Assembling knowledge: ASME publishes a greatly expanded guidelines for pressure boundary bolted joint assembly
Additionally, unlike a flanged joint a two-bolt coupling can be "free floated" around the pipe for quick alignment adjustment and easy access.
Optimising maintenance: Larry Thau*, takes a look the maintainability of mechanical piping systems

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