What Is a Plug Valve? A plug valve is a quarter-turn rotary valve that controls flow using a cylindrical or tapered plug with a through-passage. Rotating the plug 90 degrees aligns or blocks the flow path. Plug valves are primarily used for on/off isolation and are suitable for applications requiring fast operation and compact design. […]
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What Is a Check Valve? A check valve is a self-actuating valve designed to allow fluid flow in one direction and automatically prevent reverse flow. It operates without external actuation, using flow-induced pressure to open and close an internal disc or sealing element. Check valves are commonly used to protect equipment and maintain system integrity
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What Is a Butterfly Valve? A butterfly valve is a quarter-turn rotary valve that controls flow using a circular disc mounted on a rotating shaft within the pipeline. When the disc rotates parallel to the flow, the valve opens; when perpendicular, it restricts or stops flow. It is widely used for isolation and moderate throttling
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What Is a Globe Valve? A globe valve is a linear-motion valve designed for flow regulation and shutoff using a movable disc and a stationary ring seat within a typically spherical body. The disc moves perpendicular to the seat, allowing precise throttling control. Globe valves inherently create higher pressure drop compared to straight-through isolation valves.
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What Is a Gate Valve? A gate valve is a linear-motion isolation valve that uses a wedge-shaped or parallel sliding gate to start or stop fluid flow. The gate moves perpendicular to the flow path, providing minimal pressure drop when fully open. It is primarily designed for full open or full closed service rather than
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What Is a Ball Valve? A ball valve is a quarter-turn rotary valve that uses a bored spherical closure element to control fluid flow. When the ball’s bore aligns with the pipeline, flow passes through; when rotated 90 degrees, the solid portion blocks flow. It is primarily used for isolation and tight shutoff in industrial
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What Is a Ball Valve? A ball valve is a quarter-turn shutoff valve that uses a spherical closure element with a through-bore to control fluid flow. Rotation of the ball 90 degrees aligns or blocks the bore with the pipeline, enabling rapid on/off isolation with low pressure drop and tight sealing performance. Ball valves are
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What Are the Most Common Valve Selection Mistakes? Direct Answer The most common valve selection mistakes are oversizing control valves, specifying an incorrect pressure class, selecting body or seat materials incompatible with the process fluid, and misapplying isolation valves in throttling service. Each error reduces valve service life, increases maintenance frequency, and creates safety risks
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How Do You Select the Right Valve Actuation Method? Direct Answer Valve actuation selection is the process of matching an actuator type — manual, pneumatic, electric, or hydraulic — to the valve’s torque or thrust requirement at maximum differential pressure, the required operating speed, the available power utilities, and the specified fail-safe action on loss
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How Do You Select a Valve Based on Process Media? Direct Answer Valve selection by media is the process of specifying valve body materials, trim, seat, and sealing systems that are chemically compatible with the process fluid and physically appropriate for its phase, viscosity, solids content, and temperature-pressure combination. The fluid’s properties determine which materials
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