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Learn More About Side Entry Ball Valve


How Does a Side Entry Ball Valve Work?
Types of Side Entry Ball Valves
- Provides effective sealing.
- Operates within limited temperature ranges.
- More cost-effective compared to metallic seated valves.
- Uses soft seat materials like nylon, PTFE, Devlon, and PEEK.
- Not recommended for use in dirty services to avoid damage.
- Direct metallic contact between the ball and seat ring.
- Suitable for abrasive applications and environments where soft-seated valves might be damaged by temperature.
- Can tolerate leakages according to ISO 5208 rate D.
- The contact surfaces between the seat and ball are hardened to resist wear and scratching from solid particles in the fluid.
- Metallic seats are less likely to deform under pressure compared to soft seats.
- The valve seat is spring-loaded against the ball, providing a reliable seal at low pressures.
- The ball is mounted in position using a trunnion and stem, supported by bearings in the valve body.
- Unlike floating side entry ball valves, the trunnion mounted design prevents the ball from shifting. Instead, line pressure pushes the upstream seat against the ball, creating a seal.
- These valves are typically used for higher pressure ratings and larger sizes.
- The area exposed to pressure is small, resulting in a lower force exerted on the ball, which reduces friction and allows for a smaller gearbox or actuator.
- Trunnion mounted side entry ball valves are designed with self-relieving seats.
- The ball is not rigidly fixed on the rotational axis but floats freely between seat rings.
- In the closed position, fluid pressure pushes the ball against the seat, enhancing the seal at the downstream end of the valve.
- Some designs also include spring-loaded seats.
- Floating side entry ball valves require higher operating torque.
- These valves are more economical to manufacture.
Components of a Side Entry Ball Valve
Valve Body
Rotary Ball
Power Source
Seats
Stem
Packing
Bonnet
Specifications for Purchasing a Side Entry Ball Valve
- Size and Pressure Rating: Specify the size and pressure rating required for the valve.
- Ball Type: Indicate whether you need a trunnion-mounted or floating ball design.
- Bore Type: Specify whether a reduced bore or full bore design is needed.
- Sealant Injection System: Detail any requirements for a sealant injection system.
- Locking Device: Indicate if a locking device is necessary.
- Anti-Static Device: Specify if an anti-static device is required.
- Operating Mechanism: Clarify the type of operating mechanism, such as gear, lever, or actuator (pneumatic, electric, or hydraulic).
- Material Specifications: Provide the materials required for the seal rings, valve body, trunnion, seals, trim, bolts, nuts, gaskets, and packing.
- Valve Orientation: Specify the orientation of the valve as needed.
- Painting Details: Include any necessary details regarding painting.
- Seating Type: Indicate whether the valve should have metal or soft seating.
Applications of Side Entry Ball Valves
- Refineries: Side entry ball valves are commonly used for isolation and shut-off in various refinery processes. These include thermal cracking units, tower bottom lines, oil and gas separation lines, gas distribution measurement, pressure regulation, metering, oil loading control, compressor and pumping stations, and refining units.
- Petrochemical and Chemical Complexes: These valves are utilized for controlling low differential pressure, reducing emissions, handling high-viscosity fluids, and managing the flow of abrasive slurries, among other tasks.
- Power Generation: Side entry ball valves play a role in controlling boiler feed water and managing steam flow, including turning it off when necessary.
- Oil and Gas Production: These valves are used in various stages of oil and gas production, including shut-down facilities, pipeline surge control, isolation of oil heads, storage, processing, separation, distribution, and transmission.
- Paper and Pulp Industries: In these industries, side entry ball valves are employed as shut-off valves, control valves for liquor circulation and fill, lime mud control, dilution water management, and flow control in mill digesters during pulp production.
- Water Transport: These valves are also used to manage water transport systems.
- Marine Transport: Side entry ball valves control the movement of solids in marine transport applications.
- Food and Beverage Industries: They are used in various processes within the food and beverage industry.
Advantages and Disadvantages of Side Entry Ball Valves
Advantages
- Simple design makes these valves user-friendly.
- Smaller and lighter in weight compared to top entry ball valves.
- Easy to disassemble and repair, simplifying maintenance tasks.
- Quick and easy operation for efficient control.
- Rotation without axial motion reduces the risk of damage to the valve stem seal.
- Reliable and effective sealing.
- Low pressure drop with high flow rates.
- Fast opening and closing with just a 90-degree rotation, useful in emergencies for quick pipeline isolation.
- Bubble-tight sealing prevents leaks.
- Suitable for both slurry and clean applications.
- Available in varieties that can handle high-temperature and high-pressure applications.
Disadvantages
- Not suitable for sustained throttling, limiting its use in certain flow control applications.
- In slurry applications, suspended solids can settle and become trapped in the valve body, leading to wear, leakage, and eventually valve failure.
Troubleshooting Side Entry Ball Valve
- Improper Threads: The threads may be incorrectly sized. Check the thread size and either replace or reinstall as needed.
- Over-Tightened Thread Joint: Over-tightening may split the connector. Replace the cracked end connector.
- Improper Thread Sealant: The wrong sealant may have been used. Reinstall the thread connection according to recommended procedures, and verify the compatibility of the paste or sealant.
- Misaligned End Connector: Misalignment can cause issues. Check the system’s alignment, ensuring end connectors are parallel, and the valve is adequately supported.
- Loose Union Nut: Tighten the union nut if it is loose.
- Damaged or Displaced O-Ring: Particles in the O-ring groove may cause damage. Remove the valve to inspect the O-ring for chemical or physical damage, verify compatibility, and replace if necessary. Clean the O-ring groove thoroughly.
- Damaged Stem O-Ring: Disassemble the valve stem to inspect the O-ring for chemical or physical damage. Check compatibility and replace the O-ring if needed.
- Obstructed Ball: Verify if the ball is fully closed. If not, remove the valve to inspect for particles blocking the ball bore, clean it, and reinstall.
- Broken Stem: Remove the end connector and check if the ball rotates when the valve is operated. Replace the stem if necessary.
- Damaged or Debris-Laden PTFE Seat: Disassemble the valve to inspect the seat for physical damage or excessive debris. Clean and replace the seat as needed.
- Damaged, Displaced, or Debris-Laden Seat O-Ring: Disassemble the seat O-ring to inspect for chemical or physical damage, verify compatibility, and replace it if necessary.
- Damaged Ball: Remove and disassemble the valve to inspect the ball for physical damage, such as nicks or scoring on the seat sealing surface. Clean the seat surface, replace the ball if needed, and check for chemical compatibility with the valve material.
- Thermal Damage: Inspect the operating temperature, external heat sources, and heat generated from the system design for signs of distortion in the valve components.
- Internal Obstructions: Buildup of particles, sediments, or solvent cement on the ball can cause issues. Remove the valve to inspect for debris, solids, or cement deposits blocking the interior or ball. Check for sediment solids lodged between the ball and seat, as well as the stem, then clean and reinstall as necessary.
- Broken Handle: This could be due to external impact or frozen movements. Identify the cause and correct or replace the handle as needed.
- Sheared Stem: External impact or frozen movements can cause the stem to break. Replace the stem accordingly.
- Stripped Handle: Excessive exposure to sunlight can soften the handle, or overextending the open/close range can cause it to strip. Shield the valve from direct sunlight and replace the handle if necessary.
- Broken Body: Excess internal pressure or external impact may cause the valve body to break. Verify the source of the issue, check surge pressure and system pressure, and take corrective action.
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Additional General Insights Here
Specs of Side Entry Ball Valve
Size and Pressure Rating
Materials and Construction
Operating Mechanism and Accessories
Features of Side Entry Ball Valve
Advanced Sealing Technology
Side Entry Ball Valves use advanced sealing technology to provide a tight and leak-proof seal. This feature is crucial for preventing fluid loss and maintaining system pressure. For example, sealing materials such as PTFE or metal, are chosen based on the application's temperature and pressure requirements. These materials offer durability and reliability in various environments.
Durable Construction
These valves are built with high-quality materials such as stainless steel and Monel, which offer excellent resistance to corrosion and wear. The sturdy construction allows the valves to withstand harsh operating conditions. NTVAL produces Side Entry Ball Valves that meet strict industry standards, providing long-lasting performance and reliability.
Easy Maintenance
Side Entry Ball Valves are designed for easy maintenance, with a split-body construction that allows for quick access to internal components. This feature simplifies the process of inspecting and replacing parts, reducing downtime. But wait, there’s more! The design helps in maintaining the valve's performance and extending its service life.
Benefits of Side Entry Ball Valve
Reliable Performance
The advanced sealing and durable construction of Side Entry Ball Valves provide reliable performance in various industrial applications. They can handle high pressure and temperature conditions without compromising on safety or efficiency. This reliability is crucial for maintaining smooth operations in critical systems.
Cost-Effective Solution
Side Entry Ball Valves offer a cost-effective solution due to their long service life and minimal maintenance requirements. Their sturdy design reduces the need for frequent replacements, saving on operational costs. These valves provide excellent value by combining high performance with affordability.
Enhanced Safety
These valves enhance safety in industrial systems by preventing leaks and maintaining consistent pressure. Reliable sealing technology helps to contain hazardous fluids, protecting both the environment and personnel. The design and high-quality materials further contribute to the safe operation of these valves.
Applications of Side Entry Ball Valve
Oil and Gas Industry
Power Generation
Chemical and Petrochemical Industry
Pharmaceutical Industry


3 Considerations When Buying Side Entry Ball Valve
01
Locking Device
02
Anti-Static Device
03
Ball-Type
FAQs
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