What is eccentric plug valve?

What is an eccentric plug valve? A style of rotary control valve with a plug-shaped, flow-restricting member that follows an eccentric path as it rotates. The plug has no contact with its seat until it turns within a few degrees of the shutoff position. This valve type can also be referred to as rotary globe.

Where are lubricated plug valves used?

Lubricated plug valves perform well in processes that utilize fluids which carry mildly abrasive particles such as dirty upstream applications, gas pipeline systems that need bypass valves, and as blow-down valves on valve stations and kicker valves.

What are plug valves used for?

Usually available in cylindrical or conical shapes, plug valves are quarter-turn manual motion valves used for stopping or starting the flow of fluid. They offer on-off, diverting, as well as basic moderate throttling services.

What is the other name for the plug valve?

Explanation: Plug valve is also called as slim valve and is used for on/ off control but with little pressure drop. Needle valve is used for accurate flow.

What is eccentric butterfly valve?

On a centric (concentric) butterfly valve the stem is centered in the middle of the disc and the disc centered in the bore. The eccentric butterfly valve has one or more stems (stub shafts) located offset from the center according to the categories of double and triple offset valves.

Is plug valve same as globe valve?

The main difference between these two types is the way they close. A globe valve uses a plug (stem) that closes against the flow, and a ball valve has a gate (ball) that closes across the flow. Globe valves are good for regulating flow, whereas ball valves are better for on/off control without pressure drop.

Is a plug valve good for throttling?

The Plug Valve: The plug valve is used primarily for on-off service and some throttling services. It controls flow by means of a cylindrical or tapered plug with a hole in the center that lines up with the flow path of the valve to permit flow. The butterfly valve is used both for on-off and throttling services.

What is the difference between a globe valve and a plug valve?

A globe valve uses a plug (stem) that closes against the flow, and a ball valve has a gate (ball) that closes across the flow. Globe valves are good for regulating flow, whereas ball valves are better for on/off control without pressure drop. They are generally preferred over globe valves in shutoff applications.