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.
Reliable Flanged Globe Valve
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.
Quality Control
The PMI test checks the materials used in a Flanged Globe Valve to confirm their chemical composition is correct. This helps confirm the valve will perform as needed in the intended application.
PMI Test
The sealing test checks the Flanged Globe Valve for leaks. It confirms whether the valve can prevent fluids from escaping when closed.
Sealing Test
The low emission test measures the amount of gas or fluid that escapes from the Flanged Globe Valve. It verifies the valve’s ability to minimize leakage.
Low Emission Test
The impact test subjects the Flanged Globe Valve to force them to confirm its toughness. This helps ensure the valve can handle stress.
Impact Test
In dimension inspection, all parts of the Flanged Globe Valve are measured to confirm they meet precise size requirements for proper fit.
Dimension Inspection
The painting thickness test checks the valve’s protective coating. It measures whether the paint layer is thick enough to protect the valve from corrosion.
Painting Thickness Test
PT checks for surface cracks on the Flanged Globe Valve by applying a special liquid. This test helps identify small defects that may not be visible.
PT
Material inspection verifies the physical properties of the materials used in the Flanged Globe Valve. This step confirms the materials meet the required strength and durability.
Material Inspection
Our Valve Applications in Key Industries
Discover how our advanced valve solutions improve flow control, delivering enhanced efficiency, safety, and strict quality assurance.
The Flanged Globe Valve regulates fluid flow with precision in the chemical processing industry, helping maintain safe and controlled reactions.
Chemical Processing
In the petrochemical industry, the Flanged Globe Valve handles high pressures and corrosive materials, delivering reliable performance in critical operations.
Petrol Chemical
The Flanged Globe Valve supports safe and precise fluid control in O.P.G and nuclear industries, withstanding extreme conditions and maintaining system stability.
O.P.G & Nuclear
The Flanged Globe Valve controls the flow of liquids and chemicals in the pulp industry, maintaining efficient production and reducing downtime.
Pulp
The Flanged Globe Valve is ideal for mining because it manages abrasive materials and high pressure, making extraction processes more efficient and safe.
Mining
In the water and sewage industry, the Flanged Globe Valve controls water flow, helping with efficient waste management and maintaining clean water supplies.
Water & Sewage
The Flanged Globe Valve regulates steam pressure and flow in steam systems, controlling temperature and supporting efficient energy usage in industrial processes.
Steam System
For boiling systems, the Flanged Globe Valve offers precise control of steam and water, improving system efficiency and maintaining consistent temperatures.
Boiling System
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Specifications
Closure Design:
The valve flap moves along the centerline of the valve seat, ensuring precise shut-off.
Proportional Stroke:
The valve seat port changes proportionally to the valve flap stroke, allowing precise flow regulation.
Short Stroke:
The relatively short stroke of the valve stem enables effective shut-off functionality.
Flow Regulation:
The proportional design makes flange globe valves ideal for controlling flow rates, providing both shut-off and throttling functions.
Ideal Applications:
Suitable for use in systems requiring both shut-off and flow regulation.
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
Floating ball valves come in various sizes to fit different pipeline needs. Common sizes range from 1 inch to 12 inches, accommodating different flow requirements. For example, a 4-inch valve is often used in medium-sized pipelines to control the flow of liquids and gases efficiently. Each valve is designed to maintain optimal performance under specified pressure ratings, offering versatility in applications.
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.
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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