High-pressure, Leak-proof Valves With Easy In-line Maintenance
Api top entry ball valve with welded extended tube ensures leak-free flow control in high-pressure pipelines, offering corrosion resistance and easy maintenance.
High-pressure, Leak-proof Valves With Easy In-line Maintenance
Api top entry ball valve with welded extended tube ensures leak-free flow control in high-pressure pipelines, offering corrosion resistance and easy maintenance.
API Top Entry Ball Valve with Welded Extended Tube is a high-performance valve designed for critical pipeline applications, ensuring reliable shut-off and flow control under high-pressure conditions. Compliant with API 6D, ASME B16.34, and ISO 14313 standards, these trunnion mounted ball valves are constructed from forged carbon steel (A105), stainless steel (F316), or duplex stainless steel, offering superior corrosion resistant ball valve properties. Widely used in oil and gas pipelines, petrochemical plants, and offshore platforms, they provide robust pipeline flow control for pressures up to 2500 PSI and temperatures from -46°C to 200°C, ensuring durability in harsh environments.
The API top entry ball valve with welded extended tube features a top-entry design, allowing easy access to internal components for in-line maintenance without removing the valve from the pipeline. The welded extended tube enhances structural integrity and prevents leakage, making it ideal for high-pressure and high-temperature applications. Available in sizes from 2" to 48" (DN50 to DN1200), they support butt-welded, flanged (RF, RTJ), or hub-end connections, with full or reduced port options. The trunnion-mounted ball reduces operating torque, while PTFE, RPTFE, or metal seats, combined with double block and bleed (DBB) or double isolation and bleed (DIB) functionality, ensure leak-free sealing. Surface treatments like electroless nickel plating per ASTM B733 enhance corrosion resistance for media like sour gas, seawater, or abrasive slurries.
API Top Entry Ball Valves with Welded Extended Tube undergo rigorous testing, including hydrostatic, pneumatic, radiographic, and ultrasonic inspections, to meet API 598, API 6D, and NACE MR0175 standards for sour service. With a minimum tensile strength of 515 MPa and yield strength of 205 MPa for F316 stainless steel, these valves ensure structural integrity in demanding conditions. Fire-safe designs comply with API 607 and API 6FA, while features like anti-static devices, blowout-proof stems, and emergency sealant injection ports enhance safety. These valves support manual, gear-operated, pneumatic, or electric actuation, with low torque requirements ensuring smooth operation in critical systems like offshore pipelines.
Compared to side-entry ball valves, the API top entry ball valve with welded extended tube offers superior accessibility for maintenance, making it ideal for applications where downtime must be minimized. Certified by API 6D for pipeline safety and ISO 15848 for low fugitive emissions, these valves are designed for long-term reliability. The welded extended tube ensures a strong, leak-proof connection, particularly for buried or subsea installations. Specialized options, such as cryogenic designs for LNG at -196°C or metal-seated versions for abrasive media, cater to niche applications, ensuring compatibility with complex piping systems.
Addressing challenges like pipeline leaks, corrosion, and maintenance downtime, API Top Entry Ball Valves with Welded Extended Tube deliver reliable, efficient solutions for critical industrial piping systems. Their corrosion-resistant materials, leak-proof welded design, and easy in-line maintenance make them a top choice for engineers seeking durable high-pressure ball valves. Backed by Sunny Steel’s white-glove service, these valves ensure exceptional performance, safety, and longevity in oil and gas, petrochemical, and offshore applications.
| Organization | Standard | Description |
|---|---|---|
| ANSI | American National Standards Institute | General industrial standards |
| API | American Petroleum Institute | Standards for oil and gas industry |
| ASME | American Society of Mechanical Engineers | Boiler and pressure vessel codes |
| BS | British Standards | UK national standards |
| GB, JB, HG | China Valve Standards | Chinese national and industry standards |
We offer valves in a wide range of materials to meet diverse industry requirements. Additional grades are available upon request.
| Material | Main Properties | Typical Applications |
|---|---|---|
| Carbon Steel | High strength, cost-effective | General industrial, water, oil & gas |
| Stainless Steel | Excellent corrosion resistance | Chemical, food, pharmaceutical |
| Alloy Steel | High temperature & pressure resistance | Power plants, refineries |
| Duplex Steel | High strength, seawater resistance | Marine, offshore, oil & gas |
| Nickel Alloys | Extreme corrosion & heat resistance | Chemical, aerospace, marine |
| Cast Iron | Low cost, limited strength | Low pressure water systems |
| Bronze & Brass | Seawater resistance | Marine, small valves |
Upstream, midstream, and downstream operations, including drilling, refining, and transportation.
Handling corrosive and hazardous chemicals in various chemical plants.
Steam, water, and fuel systems in thermal, nuclear, and hydroelectric plants.
Municipal water supply, wastewater treatment, and industrial water management.
Heating, ventilation, and air conditioning systems in commercial and industrial buildings.
Sterile and hygienic applications, precise flow control in sensitive industries.
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