Ball valves are distinguished by their method of closing. A ball-shaped fabrication (ball) is often placed into the fluid flow route via a ball valve. The ball has a hole in the center, which is frequently circular in cross section and matches the pipe’s diameter and form. The ball is housed inside the valve’s body and rotates along its axis thanks to the stem’s supplied torque. There are numerous ways to manually or mechanically regulate the valve stem, which extends through a seal to the outside of the valve body.
The ball rotates from a completely closed to a fully open position in a ninety-degree arc during valve operation. Seals hold the ball in place and stop fluid from flowing around the ball when the valve is fully closed, cutting off the opening in the ball from the fluid and directing it toward the sidewalls of the valve body. The cross-sectional area of the aperture is exposed to the fluid flow channel more and more as the valve stem rotates toward the open position, until the open area through the ball is lined up with the flow path in the fully open position.
Keep dirt and debris away from the installation area. Guard any valve components that have been removed or are ready to be installed. Don’t put any foreign objects, dirt, or debris into the valve.
Threaded, flanged, or socket weld connections are just a few of the connection types that are available for valves. When installing some varieties, particularly socket weld, the valve may need to be disassembled. The ball surface, seals, and sealing surfaces should all be handled with care. When the valve is put back together after scratches and nicks, leakage may result.
If you’re going to disassemble a valve that is already installed, make sure the piping system isn’t under pressure first. To release any trapped pressure, switch the valve between the open and closed positions a few times.
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