Globe Valve Manufacturer

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WHO IS GLOBE VALVE ?

A Globe Valve is a type of valve used to regulate fluid flow in pipelines, featuring a movable disk and a stationary ring seat. It provides precise flow control, is durable for high-pressure applications, and is commonly used in industries like oil, gas, and water treatment.

GLOBE VALVE Series

Cast Steel Globe Valve

Pressure Seal Globe Valve

Y Pattern Globe Valve

Angle Globe Valve

Bellow Seal Globe Valve

Forged Globe Valve

Customize your Globe Valve

How Does Globe Valve Work ?

A globe valve works by utilizing a movable disk and a stationary ring seat within a spherical body. When fluid enters the valve through the inlet port, it is directed towards the valve seat, centrally located in the body. The disk, attached to a stem, moves up and down in a linear motion to control the fluid flow.

In the closed position, the disk sits tightly against the seat, creating a seal that prevents fluid from passing through. As the valve opens, the disk is lifted off the seat, allowing fluid to flow through the narrow space between the disk and the seat. This movement enables precise throttling, as the flow rate can be adjusted by the position of the disk.

When fully open, the disk is entirely off the seat, allowing fluid to flow with minimal resistance. The stem, operated by a handwheel or actuator, controls the disk’s position. The flow direction is typically from under the seat to over the seat, providing efficient control and versatility in various applications, making globe valves ideal for throttling and frequent operation.

Globe Valve Main Components:

  • Body: The main structure that houses all the internal parts and connects to the pipeline. It is designed to withstand the pressure and temperature of the fluid.
  • Seat: The stationary part that forms a seal with the disk when the valve is closed. It ensures a tight shut-off to prevent leakage.
  • Disc: The movable component that regulates flow. It moves perpendicular to the seat, controlling the opening and closing of the valve.
  • Stem: Connects the handwheel or actuator to the disk. It transmits the motion needed to open or close the valve.
  • Bonnet: Attached to the body, it covers and protects the valve internals. It provides a leak-proof seal and allows access for maintenance and inspection.
  • Packing: Seals around the stem to prevent fluid leakage. It ensures the integrity of the valve during operation.
  • Handwheel/Actuator: Used to operate the stem and disk. A handwheel is manually operated, while an actuator provides automatic control.

Why Choose Globe Valve?

Precise Flow Control

Globe valves offer excellent throttling capabilities, allowing for precise control over flow rates.

Good Shutoff Capability

Globe valves provide a reliable seal, making them effective for stopping the flow of fluids. Suitable for applications where a tight shutoff is essential, such as in fuel systems and steam applications.

Reduced Wear and Tear

The seating design minimizes wear and tear on the valve components, leading to longer service life and lower maintenance costs.

Positive Seating

The design of the globe valve ensures a positive seat closure, reducing the risk of leakage. Critical in applications where leakage cannot be tolerated, such as in toxic or hazardous fluid handling.

Safety

The ability to precisely control flow reduces the risk of system overpressure and ensures safer operation in critical applications, especially in high-risk industries like chemical processing.

Versatile Design

They come in various configurations (angle, straight, and Y-pattern) to suit different installation requirements and operational needs, providing flexibility in design and application.

Energy Efficiency

Globe valves have a low pressure drop when fully open, which can contribute to energy savings in a system, making them efficient for long-term operation.

Smooth Operation

Globe valves have a linear motion, which allows for smooth and gradual operation, reducing the risk of water hammer and system shock during flow regulation.

Categorization of GLOBE VALVE

    • Based on Body Pattern

      • Straight Pattern (Z-Pattern) Globe Valve:

        • Description: Features a straight-through flow path with the disk moving perpendicular to the flow.
        • Applications: General use, good throttling capability.
      • Angle Pattern Globe Valve:

        • Description: Flow enters and exits at a 90-degree angle.
        • Applications: Ideal for installations with space constraints or requiring a change in flow direction.
      • Y-Pattern Globe Valve:

        • Description: Y-shaped body design reduces flow resistance and pressure drop.
        • Applications: Applications needing lower pressure drops and smoother flow.
    • Based on Disk Design

      • Ball Disk Globe Valve:

        • Description: Uses a ball-shaped disk for throttling and shutoff.
        • Applications: Suitable for moderate throttling and shutoff applications.
      • Composition Disk Globe Valve:

        • Description: Uses a soft, non-metallic insert in the disk to provide a tight seal.
        • Applications: Ideal for applications requiring tight shutoff and low leakage.
      • Plug Disk Globe Valve:

        • Description: Uses a plug-shaped disk for precise flow control.
        • Applications: High-precision flow regulation.
    • Based on Stem Movement

      • Rising Stem Globe Valve:
        • Description: The stem rises when the valve is opened, providing visual indication of the valve position.
        • Applications: Common in most globe valve applications.
      • Non-Rising Stem Globe Valve:
        • Description: The stem does not rise; instead, the disk moves up and down the stem.
        • Applications: Used in applications with limited vertical space.
    • Based on Sealing Method

      • Conventional Globe Valve:
        • Description: Uses traditional packing for sealing around the stem.
        • Applications: General industrial applications.
      • Bellows-Sealed Globe Valve:
        • Description: Uses a bellows seal to prevent stem leakage.
        • Applications: Suitable for handling hazardous or toxic fluids. 

                   Based on Actuation Method

      • Manual Globe Valve:

        • Description: Operated by a handwheel or lever.
        • Applications: Simple, low-cost applications where manual operation is feasible.
      • Pneumatic Globe Valve:

        • Description: Actuated using pneumatic pressure.
        • Applications: Automated systems requiring remote control and fast operation.
      • Electric Globe Valve:

        • Description: Uses an electric actuator for operation.
        • Applications: Automated systems with precise control requirements and integration into electrical control systems.
    1. Based on Pressure Rating

      • Low-Pressure Globe Valve:

        • Description: Designed for low-pressure applications.
        • Applications: Water distribution, HVAC systems, and general-purpose applications.
      • Medium-Pressure Globe Valve:

        • Description: Suitable for medium-pressure applications.
        • Applications: Industrial processes and utility systems.
      • High-Pressure Globe Valve:

        • Description: Engineered for high-pressure environments.
        • Applications: Oil and gas, power generation, and high-pressure steam systems.
    2. Based on Connection Type

      • Flanged Globe Valve:

        • Description: Features flanged ends for bolted connections.
        • Applications: Easy installation and removal in pipelines, common in industrial applications.
      • Threaded Globe Valve:

        • Description: Uses threaded ends for connections.
        • Applications: Smaller pipelines and systems where welding or flanging is impractical.
      • Welded Globe Valve:

        • Description: Ends are designed to be welded into the pipeline.
        • Applications: Permanent installations requiring high integrity and minimal leakage.
      • Socket Weld Globe Valve:

        • Description: Ends designed for socket welding.
        • Applications: High-pressure systems requiring robust, leak-proof connections.

Most Popular Questions for
GLOBE VALVE

  • Issue: Leakage around the stem due to worn packing.
  • Solution: Tighten the packing gland. If leakage persists, replace the packing with a new one.
  • Issue: Leakage from the bonnet joint.
  • Solution: Tighten the bonnet bolts. If this doesn't resolve the issue, replace the gasket and ensure the bonnet is properly aligned during reassembly.
  • Issue: The valve is difficult to open or close.
  • Solution: Inspect for debris or buildup inside the valve body. Clean the internals and ensure the stem and disk move freely. Lubricate the stem if necessary.
  • Issue: Significant pressure drop across the valve affecting system performance.
  • Solution: Ensure the valve is fully open during operation. If pressure drop is still high, consider replacing the valve with a larger size or a valve type with lower flow resistance.
  • Issue: Cavitation causing noise and potential damage to the valve.
  • Solution: Reduce the pressure differential across the valve by adjusting upstream or downstream pressure. Install an anti-cavitation trim if the issue persists.
  • Issue: Erosion of the valve seat or disk due to high-velocity or abrasive fluids.
  • Solution: Replace damaged components with more erosion-resistant materials like hardened steel or alloys. Ensure the valve is correctly sized for the flow conditions.
  • Issue: Corrosion of valve components, leading to leaks or failure.
  • Solution: Use valves made of corrosion-resistant materials such as stainless steel or apply protective coatings. Regularly inspect and maintain the valve to prevent corrosion buildup.
  • Issue: The actuator fails to operate the valve correctly, leading to improper flow control.
  • Solution: Inspect the actuator for electrical or mechanical faults. Ensure proper calibration and connection. Replace or repair the actuator if necessary.
  • Issue: The valve is not installed correctly, leading to misalignment or stress on the valve body.
  • Solution: Follow manufacturer installation guidelines. Ensure the valve is properly aligned with the pipeline and adequately supported to prevent stress on the valve body.
  • Issue: The valve does not shut off properly because the flow direction is incorrect.
  • Solution: Confirm that the valve is installed with the flow direction matching the design for shutoff. If the valve is designed to shut off with flow under the disk, ensure it is installed accordingly.

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