In power generation, valves operate under some of the harshest conditions: superheated steam, extreme pressure, and continuous cycling. To ensure reliability and safety, equipment must meet rigorous industry standards. One of the most demanding is ASME 3100 LTD, a pressure class rating that defines valve performance in extreme service.
Vestra’s SG-1 metal-seated ball valves are engineered to meet and exceed these requirements, giving operators confidence in high-stakes power applications.
What is ASME 3100?
ASME (American Society of Mechanical Engineers) sets global standards for pressure-containing components.
- ASME 3100 LTD defines the maximum allowable working pressure at elevated temperatures.
- For example, Vestra’s SG-1 with F91 material can safely handle up to 7,750 psig at ≤600°F and maintains strength through 1,100°F (600°C).
- These ratings ensure valves can operate reliably across a wide range of demanding steam conditions.
Why ASME 3100 Compliance Matters
- Safety
- Protects operators and equipment from catastrophic failures in high-pressure steam systems.
- Protects operators and equipment from catastrophic failures in high-pressure steam systems.
- Reliability
- Ensures valves maintain integrity under extreme cycles of pressure and temperature.
- Ensures valves maintain integrity under extreme cycles of pressure and temperature.
- Regulatory Compliance
- Meeting ASME standards is often a requirement for plant certification and insurance.
- Meeting ASME standards is often a requirement for plant certification and insurance.
- Global Confidence
- ASME ratings are recognized worldwide, making them essential for multinational operators.
- ASME ratings are recognized worldwide, making them essential for multinational operators.
How Vestra Valves Meet ASME 3100
- High-Performance Materials
- Bodies: A105, F22, F91, F92 engineered for high-pressure, high-temperature steam.
- Internals: 410SS or Inconel 718 with Chromium Carbide coatings for erosion and corrosion resistance.
- Mate-Lapped Seating Surfaces
- 100% contact sealing ensures zero-leakage shutoff at ASME 3100 limits.
- 100% contact sealing ensures zero-leakage shutoff at ASME 3100 limits.
- Blowout-Proof Stem & Live-Loaded Packing
- Provides mechanical safety and zero fugitive leakage in compliance with emission regulations.
- Provides mechanical safety and zero fugitive leakage in compliance with emission regulations.
- In-Line Repairability
- Full replacement of sealing components without valve removal or welding, reducing downtime in critical power applications.
- Full replacement of sealing components without valve removal or welding, reducing downtime in critical power applications.
The Vestra Valve Advantage
By combining ASME 3100 compliance with Chromium Carbide–protected internals, precision sealing, and in-line repairability, Vestra Valves provide power plants with valves that are not only safe and compliant, but also cost-effective and reliable over their lifecycle.
For operators, this means confidence that every Vestra SG-1 is built to withstand the toughest steam environments.
