Trusted Rising Stem Ball Valve Manufacturer
NTVAL manufactures durable Rising Stem Ball Valves for industrial applications, offering precision and reliability. Committed to excellence, our valves meet high performance and safety standards, making them ideal for complex projects. Choose NTVAL for dependable solutions.
Reliable Rising Stem Ball Valve
Rising Stem Ball Valves are a preferred choice in the oil and gas industry for applications that need a reliable seal, either metal or soft, to prevent contamination or leakage. These valves are particularly well-suited for situations where frequent opening and closing are required. Their design helps maintain the integrity of the process by preventing unwanted material loss.
Quality Control
Inspectors verify the chemical composition of the rising stem ball valve with specialized tools to confirm the correct material is used for safety.
PMI Test
This test checks if the rising stem ball valve seals properly under pressure, confirming there are no leaks from the body or stem.
Sealing Test
Inspectors strike the rising stem ball valve with controlled force to check if it withstands impacts without breaking or deforming during operation.
Low Emission Test
Inspectors strike the rising stem ball valve with controlled force to check if it withstands impacts without breaking or deforming during operation.
Impact Test
During this process, inspectors measure every part of the rising stem ball valve to confirm it meets size specifications for proper installation.
Dimension Inspection
This test measures the valve’s paint thickness, verifying it provides enough protection against corrosion while maintaining performance without excessive coating.
Painting Thickness Test
Penetrant Testing applies a special dye to the valve’s surface, revealing hidden cracks or flaws that could compromise safety in future use.
PT
The rising stem ball valve’s raw materials undergo inspection before production to confirm they meet quality standards, reducing the risk of future failures.
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 rising stem ball valve offers precise control and durability, making it a reliable choice for handling harsh chemicals safely.
Chemical Processing
In the petrol chemical industry, the rising stem ball valve efficiently manages high-pressure flows and volatile materials, providing safe, dependable operation.
Petrol Chemical
The rising stem ball valve’s design excels under extreme conditions, making it ideal for the demanding environments of nuclear and power generation plants.
O.P.G & Nuclear
For the pulp industry, rising stem ball valves handle fibrous materials without clogging, delivering consistent flow control and reducing maintenance issues.
Pulp
Mining operations benefit from rising stem ball valves as they handle abrasive materials and high-pressure flows, improving equipment lifespan and performance.
Mining
In water and sewage systems, rising stem ball valves control fluid movement effectively, reducing leaks and providing reliable long-term service.
Water & Sewage
The rising stem ball valve withstands high temperatures in steam systems, offering precise flow control and reducing the risk of malfunction.
Steam System
In boiling systems, rising stem ball valves manage extreme heat and pressure, providing safe, reliable operation in demanding temperature environments.
Boiling System
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Features and Benefits
Rising Stem Ball Valves are designed for demanding applications in the oil and gas industry, offering reliable sealing to prevent contamination or leakage. Here are the key features and benefits that make these valves ideal for frequent cycling and challenging environments:
- Extended Service Life: The unique helix coil stem design allows for friction-free opening and closing, leading to longer service life and lower maintenance costs.
- Enhanced Performance: Provides tight sealing performance up to ANSI FCI 70-2 Class VI, which helps improve product quality, efficiency, and safety.
- Easy Maintenance: The top-entry design allows for straightforward in-line inspection and maintenance, reducing downtime.
- Corrosion Resistance: Features a heavy wall thickness that exceeds ASME/ANSI B16.34 standards, offering greater protection against corrosion.
- Safety Assurance: Equipped with a blowout-proof stem that meets international standards like API 600 and 6D, enhancing personnel safety.
- Innovative Design: Combines the quarter-turn action of a ball valve with the linear movement of a non-rotating stem and offers trunnion-mounted configurations in both reduced and full bore.
- Versatile Operation: The valve is designed with a single seat that eliminates the valve body cavity and is available in unidirectional or bidirectional options, featuring a metal-to-metal seat with stellite welding overlay or an optional soft seat insert.
- Stem Adjustments: Includes an outside screw and yoke for easy stem packing adjustments, along with a blowout-proof stem for added safety.
- Frequent Cycling: Suitable for operations requiring very high-frequency cycling, like switching valves, and achieves tight shut-off through external mechanical force, independent of differential pressure.
- Durable Material Selection: Carefully chosen materials prevent galling and reduce friction, while the lower trunnion is protected from solid particle intrusion.
- Temperature Consideration: Clearance control is implemented to account for high and low-temperature shrinkage, and the self-cleaning closure member maintains optimal performance.
Specifications
- Standards: Complies with API 6D, API 6FA-607, FCI 70-2, and NACE MR0175/API 598.
- Size Range: Available in sizes from DN 25 to 600 and NPS 1 to 24.
- Pressure Class Range: Covers pressure classes from PN 10 to 320 and Class 150 to 2500.
- Seating Material: Options include metal or soft seating, depending on application needs.
Configurations
- Actuated: Available in standard and high-temperature configurations with electric, pneumatic, or hydraulic actuators. Customizable actuator options ensure compatibility with various industrial applications.
- Manual: Offered in both standard and high-temperature options, with manual gear available for easier operation. The manual gear system provides precise control and reduces operator effort during valve adjustments.
Industries
- General Industries: Suitable for a wide range of general industrial applications.
- Chemicals: Ideal for basic organic and inorganic chemicals, biofuels, and petrochemicals.
- Water: Used in wastewater treatment, agriculture, and irrigation systems.
- Oil & Gas: Serves upstream exploration and production, midstream transportation, and downstream processing.
- Power: Applicable in conventional steam power plants.
Features
- No Rub Sealing: Prevents wear by eliminating rubbing between sealing surfaces.
- Injectable Packing: Enhances durability and maintenance ease.
- Single-Seat Design: Simplifies the valve structure for reliable performance.
- Extended Life: Designed for long-term use with wear-resistant materials.
- Optimal Flow: Full port or reduced port openings provide high CV figures.
- Top-Entry Design: Allows for easy maintenance and inspection.
- Dual Stem Guides: Ensures stability and smooth operation.
- Self-Cleaning: Reduces buildup and maintenance needs.
- Low-Torque Operation: Provides easy and efficient valve operation.
- Wear-Resistant Core: Features hard-facing technology for added durability.
- Mechanical Cam Closure: Offers a secure and reliable seal.
Compliance
- API 6D: Meets the standards for pipeline valves.
- ISO 9001:2008: Certified for quality management systems.
- PED 97/23/EC: Compliant with the Pressure Equipment Directive.
- ATEX Directive 94/9/EC: Certified for use in explosive atmospheres.
- GOST and GOST-R: Holds Russian certification and RTN permit.
- ISO 15848-1: Qualified for fugitive emission testing.
- Shell GSI SPE 77/300 TAT: Meets Shell’s technical assessment standards.
- TAMAP Two-Star Rating: Recognized for high performance in specific applications.
- ASME B16.34: Complies with the standards for valve pressure-temperature ratings.
Reliable Performance
The rising stem ball valve’s unique tilt-and-turn design minimizes seal rubbing, ensuring reliable performance in demanding conditions. It is a proven technology for challenging applications, including high-temperature, critical isolation, and molecular sieve switching services.
Rising stem ball valves are ideal for applications requiring zero leakage and frequent operation, making them widely used in gas processing plants, particularly for molecular sieve systems involving switching services. Designed for global use, these valves deliver dependable performance in harsh environments.
The tilt-and-turn mechanism eliminates seal rubbing, a common cause of valve failure, allowing for easy, low-torque operation and long-term reliability. Below are the features and compliance standards of these rising stem ball valves.
Rising Stem Ball Valves
These valves are specifically designed for molecular sieve applications and are highly effective in dirty environments. The unique design allows the ball to move away from the seats, which helps clean the ball surface and reduces friction during opening and closing. This design also lowers the torque and thrust required during operation, making the valve easier to use and more efficient.
General Applications
Top Entry Rising Stem Ball Valves are versatile and used in various demanding environments. They are ideal for molecular sieve dehydration, dryer switching, and suction and discharge isolation. Additionally, these valves are commonly employed in heat transfer systems, flowlines, and emergency shutdown scenarios.
Materials of Construction
These valves are built using materials that can withstand extreme conditions. Options include low-temperature and low-alloy carbon steel, stainless steel, and more robust materials like duplex, super duplex, and nickel alloys. These materials are selected to ensure durability and performance in challenging environments.
Specific Applications
These valves are suited for a wide range of applications. They are effective in utility services and can handle corrosive and dirty fluids. They are also designed for low-temperature operations and can manage high-pressure situations efficiently.
TECHNICAL DATA
| Design | AP16D, API 600, ASME B16.34, ISO14313, ISO10423, ISO17292 |
| Design pressure | ASME B16.34, AP1600 |
| Body wal thickness | ASME B16.34, ASME VII Dv.I, ASMEVII Div.2, ISO 17292,API 600 |
| Face to Face | API 6D, ASME B16.10 Long pattem |
| Temperature range | -196° to 600°C (-320°to 1112°F) |
| Pressures range | PN20 (ANSI 150) to PN420 (ANSI 2500) |
| Size range | DN50 (2”)to DN600 (24”) |
| End connections | ASME B16.5≤DN600 (24°)Flanged RF,FF,RTJ MSS-SP-44= DN550 (22”)Flanged RF.FF,RTJASME B16.25 Butt-Weld BW Clamp (HUB) |
APPROVALS
| Safety Integrity Level | SIL 3 |
| Fire Safe | API 607,API 6FA,BS 6755,ISO 10497-5 |
| Area Classification | ATEX 94/9/EC |
| Pressure Equipment Directive | PED 97/23/EC |
| Fugitive Emission | ISO 15848/1, ISO 15848/2 |
| Construction | API 6D, API 6DSS |
Standard Features
| Construction | One piece bolted bonnet |
| Port | Reduced bore, full bore or fully piggable |
| Stem retention | Anti blow-out stem |
| Sealing | Single seated bi-directional,with preferential flow direction,to avoid pressure trapped between the seats.Metal seated with Tungsten or Chrome Carbide coating; Soft seated with thermoplastic polymers (Nylon,Devlon,PEEK,PCTFE), special polymers upon request |
| Leakage rate | ISO 5208 rate A soft seated,rate B,C,D metal seated |
| Operating Description | The movement of the ball tilted from the seat before starting the rotation eliminates the wear of the seat seal and allows forsmooth movement and low torque.The same tilting movement when starting the opening allows for a cleaning flow all around ball surface;this flow automatically flushes the ball surface removing eventual dirt particles from the sealing areas |
| Grease injectors | Available on request on both seats and stem |
| Drain /Vent | Drilled andthreaded connections for all sizes,Vents for sizes below DN |
| Vent | Drilled and threaded vent connections for sizes≥DN150 (6”)<DN150 upon request |
| Lifting points | Included for sizes≥DN150 (6”)or on valves of 250 kg min |
| Support feet | Included for sizes ≥DN150 (6”)or on valves of 250 kg min |
| Stem extension | Available for applications in low/cryogenic temperature applications or for high temperature application |
| Valve operation | Handwheel,Gear box or Actuator with position indicator and locking device |
| Material testing | Pressurecontaining &controlling parts to EN 102043.1 Materials in Sour Service according to NACE MR0175,MR0103,ISO15156 Non-destructive testing (NDT) toAPI 6D,ASME B16.34 |
| Valve testing | Hydrostatic &pneumatic testing to API 6D,ASME B16.34,ISO 5208 (other upon request) |
Orbit Ball Valve
The Orbit Ball Valve is designed for a range of industrial applications. It is commonly used in the petrochemical industry, liquefied petroleum gas storage, and refineries. Additionally, this valve is suitable for natural gas systems, oil and gas pipelines, as well as in light industry, textiles, and other related fields. Below are key features that make the Orbit Ball Valve an excellent choice for these demanding environments:
Top Entry Structure
This valve features a top entry design, allowing for convenient maintenance directly on the pipeline. Unlike other valves, there is no need to remove the valve from the pipeline to perform repairs. This design makes it easier and quicker to maintain the valve without disrupting the system.
Integral Structure
The single-piece valve body ensures strength and rigidity under maximum pressure. Thick walls and strong connection bolts enhance durability and ease of maintenance, ensuring reliable performance in various conditions.
Lower Torque Operation
The stem is specially designed to minimize friction between the seat and ball sealing surfaces. This design allows the stem to turn smoothly, requiring minimal effort to open and close the valve. The low torque operation enhances the ease of use and extends the valve’s lifespan.
Working Principle
Opening of the Orbit Ball Valve
In the closed position, the ball is pressed tightly against the seat by the stem’s pressure. As you turn the handwheel counterclockwise, the stem rises, lifting the ball away from the seat. The stem continues to rise, rotating the ball 90° until the ball hole aligns with the valve channel, allowing the valve to open smoothly.
Closing of the Ball Valve
To close the valve, turn the handwheel clockwise, causing the stem to lower and start rotating the ball. As the stem moves down, it rotates the ball 90° into the closed position. Finally, the stem pushes the ball against the seat, creating a tight seal and preventing any leaks.
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Specs of Rising Stem Ball Valve
Material Construction
Rising Stem Ball Valves are typically constructed from high-quality materials like stainless steel, carbon steel, or other corrosion-resistant alloys. As a matter of fact, these materials are chosen for their durability and ability to withstand harsh environments, making the valves suitable for a wide range of industrial applications.
Pressure Rating
These valves are designed to handle high-pressure systems, with pressure ratings often ranging from 150 PSI to 2500 PSI or higher. The pressure rating indicates the maximum pressure the valve can safely operate under, making it crucial for applications where maintaining system integrity is important. At NTVAL, we can offer a specific pressure rating of Rising Stem Ball Valves for your specific needs.
Temperature Range
Rising Stem Ball Valves can operate within a wide temperature range, often from -50°C to 200°C or more. This capability allows them to be used in both extremely cold and hot environments, providing versatility for various industrial processes, such as steam applications and cryogenic services.
End Connection Types
The Rising Stem Ball Valves are available with various end connection types, including flanged, threaded, and welded connections. These options provide flexibility in installation and maintenance, allowing the valves to be easily integrated into different piping systems, depending on the specific needs of the application.
Features of Rising Stem Ball Valve
Lockable Handle Option
Many Rising Stem Ball Valves come with a lockable handle option. This feature allows the valve to be locked in either the open or closed position, providing an added layer of security. It is useful in preventing unauthorized operation or accidental changes in the valve's position.
Visible Stem Position
Rising Stem Ball Valves feature a stem that visibly rises and falls as the valve opens and closes. This design allows operators to easily determine the valve's position at a glance. The visible stem is a distinctive feature that aids in quick visual inspections.
Leak-Tight Sealing Mechanism
These valves incorporate a specialized sealing mechanism designed to prevent leaks. The ball and seat are precision-engineered to provide a tight seal when the valve is closed. I guess this feature is crucial for applications where maintaining a secure and leak-free system is essential.
Benefits of Rising Stem Ball Valve
Improved Safety
Rising Stem Ball Valves offer improved safety due to their visible stem position, which allows operators to easily determine whether the valve is open or closed. It reduces the risk of accidental operation, making it easier to maintain safe conditions in industrial settings.
Enhanced Durability
These valves are known for their enhanced durability due to their strong-built construction using materials like stainless steel or carbon steel. This durability allows them to withstand harsh conditions and extended use, reducing the frequency of replacements and maintenance, which can be costly and time-consuming.
Easier Maintenance
The design of Rising Stem Ball Valves simplifies maintenance tasks. The visible stem and straightforward construction make it easier to inspect and service the valve. This benefit reduces downtime during maintenance, improving overall operational efficiency in various industrial applications.
Applications of Rising Stem Ball Valve
Oil and Gas Industry
Rising Stem Ball Valves are commonly used in the oil and gas industry for controlling the flow of crude oil, natural gas, and other hydrocarbons. You won’t believe that their ability to handle high pressures and harsh environments makes them ideal for use in pipelines, refineries, and offshore platforms.
Power Generation
In power generation facilities, Rising Stem Ball Valves are used to manage the flow of steam, water, and other fluids. Their durability and ability to operate under high pressure and temperature conditions make them ideal for applications in boilers, turbines, and cooling systems.
Chemical Processing
In chemical processing plants, Rising Stem Ball Valves are used to regulate the flow of various chemicals. Their precise control and leak-tight sealing are essential for maintaining safe and efficient operations, especially when handling corrosive or hazardous substances.
Water and Sewage Systems
Rising Stem Ball Valves are used in water and sewage systems to control the flow of clean water, wastewater, and other fluids. Their leak-tight sealing and strong construction make them suitable for handling large volumes of water while preventing contamination and maintaining system efficiency.
3 Considerations Rising Stem Ball Valve
01
ISO 45001 Ceritfied
When buying a Rising Stem Ball Valve, confirm that the manufacturer is ISO 45001 certified just like NTVAL. Did you know that this certification is ensures that the company follows strict occupational health and safety standards. For example, if your operations require adherence to safety regulations, choosing an ISO 45001 certified supplier guarantees a safer and more compliant product.
02
Low-Emission Packing
Consider choosing valves with low-emission packing. It is important for minimizing harmful gas emissions. Valves with low-emission packing can help you comply by reducing leaks and emissions, protecting both the environment and workplace safety.
03
Anti-Corrosion Coatings
Consider valves with anti-corrosion coatings if they are exposed to harsh chemical environments. For example, an epoxy coating can provide additional protection against corrosive substances, extending the valve’s lifespan and reducing maintenance needs.
FAQs of Rising Stem Ball Valve
The operation of rising stem ball valves is easy and reliable because the absence of seal rubbing during both opening and closing means low-torque valve operation and long-term reliable performance.
You can maintain Rising Stem Ball Valves by regularly checking for wear, lubricating moving parts, and tightening seals. Operate the valve occasionally and replace any worn seals to keep it working smoothly.
Yes, we provide a 3.1 certificate, which includes the valve test report and performance data for Rising Stem Ball Valves, at no additional cost. The certificate will be sent for your approval before delivery.
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