Flanged End Forged Globe Valve

How does a globe check valve work

A globe check valve is a type of valve that combines the features of both a globe valve and a check valve to control the flow of fluids in a pipeline. It allows flow in one direction and prevents backflow in the opposite direction. api 6d ball valve
Forward Flow: When fluid flows in the direction of the arrow (forward flow), the pressure of the fluid pushes the disk or plug away from the valve seat, allowing the fluid to pass through the valve and continue down the pipeline. This operation is similar to how a standard globe valve operates to control flow.
Backflow Prevention: If there is any attempt at backflow (reverse flow), the pressure from the fluid coming from the opposite direction pushes against the disk or plug, causing it to seat firmly against the valve seat. This action effectively blocks the reverse flow and prevents it from moving backward through the valve. This function is similar to that of a check valve, which only allows flow in one direction, api602 forged gate valve.

What are angle globe valves

Angle globe valves, also known simply as angle valves or angle-pattern globe valves, are a specific design variation of globe valves. They are used in applications where space constraints or pipeline routing require a change in the direction of flow. Angle globe valves have a 90-degree bend in the flow path, which sets them apart from traditional straight-pattern globe valves. Here are some key characteristics and applications of angle globe valves:

Key Characteristics:

Flow Path Design: Angle globe valves have an angled flow path, typically at a 90-degree angle to the inlet and outlet connections. This design allows the valve to change the direction of flow while still providing the throttling and flow control capabilities of a globe valve. forged ball valve

Body Configuration: The valve body of an angle globe valve is typically L-shaped or Y-shaped, which contributes to the change in flow direction. The inlet and outlet ports are positioned at a right angle to each other.

Operational Function: Angle globe valves operate in a manner similar to straight-pattern globe valves. They use a globe-like plug or disc to control the flow of fluid through the valve. The plug or disc is moved up and down by a valve stem to regulate flow, low temperature ball valves.

Why are globe valves closure part shaped

Globe valves have different types of plugs or discs that are used to control the flow of fluid through the valve. These plug types are chosen based on the specific application requirements and the characteristics of the fluid being controlled. Here are some common types of plugs used in globe valves:

Flat Disc Plug: This is the most basic and commonly used type of plug in globe valves. It is a flat, circular disc that moves up and down to control the flow. Flat disc plugs are suitable for general-purpose applications where tight shutoff is not a primary concern. carbon steel gate valves

Spherical Plug: A spherical plug has a rounded, ball-like shape. It offers better sealing properties than a flat disc plug and provides good throttling capabilities. Spherical plugs are often used in applications where tight shutoff and precise control are essential.

Needle Plug: Needle plugs have a tapered, needle-like shape at the end. They are designed for fine control of flow rates and are commonly used in applications where precise regulation is required, such as in instrumentation and laboratory equipment.

Parabolic Plug: Parabolic plugs have a parabolic or cone-like shape. They offer excellent throttling characteristics and are used in applications where a linear flow characteristic is desired. Parabolic plugs are suitable for processes that require accurate control of flow rates.

Cage Plug: A cage plug consists of a cylindrical cage that surrounds a smaller, cylindrical plug. The cage design provides enhanced flow control and reduces the risk of vibration-induced damage. Cage plugs are often used in high-pressure and high-temperature applications.

Flow-to-Close Plug: This type of plug is designed to close against the flow, providing a tight seal when the valve is closed. Flow-to-close plugs are used in applications where preventing backflow is crucial, such as in safety systems.

Flow-to-Open Plug: Flow-to-open plugs are designed to open against the flow. They are used in applications where maintaining a constant flow rate is more critical than tight shutoff when the valve is closed. high temperature gate valves

Multi-Stage Plugs: Some globe valves use multi-stage plugs, which have several steps or stages that can be sequentially engaged to achieve different flow rates or pressure reductions. Multi-stage plugs are used in applications requiring precise control over multiple operating conditions.