Trusted Flanged Globe Valve Manufacturer

NTVAL provides durable Flanged Globe Valves for precise flow control in industrial applications. Made with advanced materials and technology, our valves deliver optimal performance in tough conditions, meeting the highest industry standards for reliability and quality.

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Learn More About Flanged Globe Valve

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1. Body: NTVAL cast steel bodies provide low resistance flow and optimal strength and performance.
2. Bonnet: NTVAL bonnet assemblies match the standards of the bodies.
3. Back Seat Bushing: Engaging with the stem head, the back seat provides a stable shutoff to the stuffing box, isolating the packing from flow exposure.
4. Stem: Inserts vertically into the disc.
5. Lock Groove: Accommodates the split lock ring, allowing the disc nut to lift the disc during cycling.
6. Split Ring: Allows the disc nut to lift the disc during cycling.
7. Disc: Machined to tight tolerances for trouble-free shutoff and cycling.
8. Disc Nut: Secures the disc to the stem, in conjunction with the split lock ring.
9. Gland: Compresses the packing to create a stem seal above the back seat, between the bonnet and stem.
10. Gland Flange: Applies pressure to the gland for accurate packing compression.
11&12. Gland Bolts & Nuts: Facilitate easy adjustments for packing compression.
13. Gland Bolt Pin: Secures the gland bolts to the yoke and bonnet.
14. Packing: Creates a seal above the back seat, between the bonnet and stem.
15. Stuffing Box: Contains the packing.
16. Stem Nut: Provides a precision guide for proper stem alignment.
17. Handwheel: Operates the valve.
18. Handwheel Nut: Secures the handwheel to the bonnet assembly.
19. Handwheel Washer: Prevents loosening or distributes pressure evenly.
20. Bonnet Gasket: Creates a leakproof seal between the bonnet and the body.
21 & 22. Bonnet Studs & Nuts: Secure the bonnet to the body.
23. Seat Ring: Aligned, seal-welded into the valve, and precision ground for optimal seating to provide a stable shutoff.
24. Disc Guide: Provides a stable track to keep the disc aligned with the seat during cycling.
25. Spacer Ring: Assists the packing rings in creating a seal above the back seat, between the bonnet and stem.

Specifications

The valve flap moves along the centerline of the valve seat, ensuring precise shut-off.

The valve seat port changes proportionally to the valve flap stroke, allowing precise flow regulation.

The relatively short stroke of the valve stem enables effective shut-off functionality.

The proportional design makes flange globe valves ideal for controlling flow rates, providing both shut-off and throttling functions.

Suitable for use in systems requiring both shut-off and flow regulation.

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Working Principle and Characteristics of the Flange Globe Valve

Operation Mechanism:
  • The flange globe valve is a crucial shut-off valve that utilizes torque applied to the stem. This torque forces the valve flap against the valve seat in the axial direction.
  • The tight contact between the sealing surfaces of the valve flap and valve seat prevents medium from leaking through any gaps.
Sealing Mechanism:
  • The flange globe valve features a sealing mechanism made up of the valve flap sealing surface and the valve seat sealing surface.
  • The stem moves the valve flap vertically along the centerline of the valve seat.
Design and Maintenance
  • Small valve flap opening height allows for easy flow adjustment during operation.
  • Simple design enables easy manufacturing and maintenance.
Application Versatility
  • Suitable for a broad range of pressure applications.
  • Versatile and adaptable in various operational settings.

Advantages and Disadvantages of the Flange Globe Valve

A. Advantages of the Flange Globe Valve

  • Simple Structure: The flange globe valve features a straightforward design, which makes it easier to manufacture and repair.
  • Efficient Operation: With a small working stroke, the valve has short opening and closing times, contributing to efficient operation.
  • Reliable Sealing: The valve provides good sealing with low friction between the sealing surfaces, resulting in a longer service life.

B. Disadvantages of the Flange Globe Valve

  • High Fluid Resistance: The flange globe valve experiences significant fluid resistance, requiring more force to open and close.
  • Limited Media Compatibility: This valve is not suitable for media with particles, high viscosity, or those prone to cooking.
  • Suboptimal Adjustment Performance: The valve has poor performance when it comes to flow adjustment.

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Specs of Flanged Globe Valve

Material and Construction

Flanged Globe Valves are constructed from high-quality materials like stainless steel, carbon steel, and alloy steel. These materials provide excellent resistance to corrosion and wear, making them suitable for harsh environments. The valves are designed with durable flanged ends, providing secure connections to pipelines and other systems.

Size

These valves are available in a wide range of sizes, typically from 1/2 inch to 24 inches, to accommodate various flow requirements. They are rated for different pressure classes, usually ranging from ANSI Class 150 to 2500. At NTVAL, we offer wide range of valve sizes allows them to be used in diverse applications, from low-pressure systems to high-pressure industrial setups.

Operating Mechanism

Flanged Globe Valves are equipped with an easy-to-operate handwheel or actuator for opening and closing the valve. As a matter of fact, the stem and bonnet design provides smooth operation and reliable sealing. This straightforward mechanism allows for simple maintenance and long-term functionality, making these valves a practical choice for many industrial applications.

Features of Flanged Globe Valve

Non-Rising Stem

Many Flanged Globe Valves are equipped with a non-rising stem, which is particularly useful in installations with limited vertical space. The stem remains in the same position while the valve is operated, providing a clear indication of the valve's status without requiring extra space. I guess this design is beneficial for compact or space-constrained environments.

Seat Rings

Flanged Globe Valves often include renewable seat rings, which can be replaced when they wear out. This feature extends the valve's lifespan, as it allows for easy maintenance and replacement of worn parts without the need to replace the entire valve. It is a cost-effective solution for maintaining valve performance over time.

Multi-Turn Operation

These valves are designed for multi-turn operation, meaning the valve requires several turns to open or close fully. This feature provides more precise control over the flow rate, allowing for fine adjustments. It is particularly useful in applications where gradual changes in flow are necessary, such as in process control systems.

Benefits of Flanged Globe Valve

Easier Maintenance

The design of Flanged Globe Valves allows for easier maintenance and servicing. Components like the bonnet, disc, and seat can be accessed and replaced without difficulty. This ease of maintenance reduces downtime and helps keep systems running smoothly. This benefit is useful for manufacturers like NTVAL, as it ensures our systems partner operate efficiently and with minimal interruptions.

Reduced Leakage

One of the key benefits of Flanged Globe Valves is their ability to minimize leakage. The design of the valve, including the tight sealing between the disc and seat, helps prevent fluid from escaping, even under high-pressure conditions. This benefit is crucial for maintaining system integrity and safety.

Increased Durability

Constructed from high-quality materials like stainless steel and carbon steel, Flanged Globe Valves provide increased durability. These materials resist corrosion and wear, allowing the valves to withstand harsh operating conditions. This durability translates into a longer lifespan and reduced need for frequent replacements, offering cost savings over time.

Applications of Flanged Globe Valve

Oil and Gas Industry

In the oil and gas industry, Flanged Globe Valves are used for handling various fluids, including crude oil, natural gas, and refining products. They are often employed in pipelines and processing units to regulate flow and pressure. Their ability to withstand harsh environments makes them suitable for both onshore and offshore applications.

Power Generation Plants

In power generation plants, Flanged Globe Valves play a crucial role in managing steam flow meter and other high-temperature fluids. Their design allows for accurate flow control, making them ideal for adjusting pressure and flow in boilers and turbines. This helps in optimizing energy production and system performance. If you are in this industry and looking for high-quality Flanged Globe Valves, choose NTVAL.

Chemical Processing

In chemical processing, Flanged Globe Valves are used to control the flow of different chemicals and gases. I am impressed by how these valves allow operators to adjust the flow precisely, which is important for safety and efficiency. They are designed to handle corrosive and toxic substances, making them suitable for use in chemical reactors and storage tanks.

Water & Sewage

Flanged Globe Valves are used to control the flow of clean water and wastewater. They help regulate pressure and manage the flow of fluids through treatment plants and pipelines. Their sturdy design and reliable sealing make them ideal for maintaining smooth operations in these critical systems.
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Considerations When Buying Flanged Globe Valve

01

Class 300 Flat Face End Connection

When buying a Flanged Globe Valve, confirm that the end connection is Class 300 flat face. For example, if your system’s flanges are designed for this type of connection, it provides a proper seal and alignment, which is crucial for 
preventing leaks and maintaining 
system efficiency.

02

At Least ANSI Class 600

Look for a Flanged Globe Valve that has a pressure rating of at least ANSI Class 600 if your application involves high pressure. Let me explain further. For example, if your system operates at higher pressures, an ANSI Class 600 valve can withstand the required pressure levels, preventing potential damage and ensuring safe operation.

03

ISO 45001

Look for ISO 45001 certified Flanged Globe Valve, which indicates compliance with international safety management standards. This certification highlights the valve’s focus on safety in design and manufacturing, reducing the risk of accidents and promoting reliable performance. At NTVAL, we can offer 
you the valves that are ISO 45001 
certified.

FAQ's

Our langed Globe Valves are available in a comprehensive size range to meet various application needs. We offer sizes from NPS 2 to NPS 24, providing suitability for a wide array of industrial requirements.
Yes, every Flanged Globe Valve is accompanied by a 3.1 certificate containing test reports and performance data, provided at no extra cost before delivery.
NTVAL hold ISO9001, ISO14001, ISO45001, API6D, and API607 certifications, reflecting our commitment to high-quality and safety standards of every Flanged Globe Valves.

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