Views: 0 Author: J-VALVES Publish Time: 2025-05-09 Origin: Site
ISO 13628-4 is part of the ISO 13628 series, which specifies requirements for subsea production systems. This particular standard focuses on the design, manufacturing, and testing of subsea equipment, including ball valves. It is widely used in the oil and gas industry for applications involving deepwater and subsea operations.
Underwater Pressure Sealing
• Design Requirements: ISO 13628-4 ball valves are designed to withstand high pressures and maintain a tight seal in underwater environments. The valves are typically made from high-strength materials such as stainless steel or alloy steels to ensure durability and corrosion resistance.
• Testing Protocols: The standard requires rigorous testing to ensure the valves can maintain their integrity under extreme conditions. This includes hydrostatic testing, pressure cycling tests, and long-term endurance tests to simulate the demanding conditions of subsea operations.
• Sealing Performance: ISO 13628-4 ball valves are designed to provide bidirectional sealing, ensuring reliable shutoff in both directions. The valves undergo stringent leak testing to ensure zero leakage under high pressure.
ISO 14313 specifies the design, manufacturing, and testing requirements for ball valves, check valves, gate valves, and plug valves used in pipeline systems in the petroleum and natural gas industries. This standard is not applicable to subsea pipeline valves, which are covered by ISO 14723.
• Design Requirements: ISO 14313 gate valves are designed to provide tight shutoff in underwater environments. They feature a wedge-shaped gate that compresses against the seat to create a seal. The valves are typically made from materials such as carbon steel, stainless steel, or alloy steels.
• Testing Protocols: The standard includes comprehensive testing requirements to ensure the valves can maintain their integrity under high pressure. This includes hydrostatic testing, seat leakage tests, and pressure cycling tests.
• Sealing Performance: ISO 14313 gate valves are designed for unidirectional sealing, providing excellent tight shutoff in one direction. The valves undergo stringent leak testing to ensure minimal leakage under high pressure.
| Feature | ISO 13628-4 Ball Valves | ISO 14313 Gate Valves |
| Valve Type | Quarter-turn ball valve | Linear motion gate valve |
| Sealing Type | Bidirectional sealing | Unidirectional sealing |
| Design Requirements | High-strength materials, bidirectional sealing | High-strength materials, unidirectional sealing |
| Testing Protocols | Hydrostatic, pressure cycling, long-term endurance tests | Hydrostatic, seat leakage, pressure cycling tests |
| Applications | Subsea operations, high-pressure environments | Pipeline systems, on-off control applications |
