Flexible Split Wedge Gate Valves – Equiwedge Main Steam Isolation Valve

Compliant with ASME Section III and RCC-M design codes, the Edward Equiwedge flexible split wedge gate valve is the industry standard for fast-acting, reliable isolation of main steam or main feedwater lines.

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Features & Benefits

Installed base-proven design with over 600 Equiwedge gate valves, MSIVs, and MFIVs installed in operating nuclear power generation plants
Minimized closing time that is 100% verifiable prior to plant startup or during outages to ensure safe shutdown of reactor to prevent meltdown
Gas/hydraulic actuator design provides ability to close valve within 3 to 5 seconds of receipt of signal
Maximized actuator readiness designed with self-contained stored energy and critical component redundancies
Extended service life enabled by simplified modular design with no external hose or piping connections and a 12-year maintenance cycle
Environmental and functional qualifications per IEEE and ASME QME-1 requirements

Spefification

- ASME B16.34
- ASME Section III
Size Range:
- NPS 4 to 42
- DN 100 to 1051
Pressure Class Range:
- 601 to 1500
- PN 110 to 260
Seating Material: Metal

Industries

Power
- Nuclear
Chemicals
- Petrochemicals

Documents & Support

Related Literature

Edward Valves: Quick-Closing Isolation Valves: The Equiwedge Alternative – Technical Article

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dward^®Equiwedge™ Gate Valve — Exceptional performance for critical applications