Electric Actuated High Pressure Gate Valve WCB 6 Inch 900LB Flanged Modulating

Product Specification

Electric Actuated High Pressure Gate Valve 6" 900LB

Product Introduction

This electric actuated gate valve combines a rugged API 600 cast carbon steel gate valve with an intelligent multi-turn electric actuator for automated high-pressure isolation service. The 6-inch Class 900LB WCB body is designed for demanding oil and gas pipeline applications where remote operation, precise position control, and reliable fail-safe performance are critical. The integrated smart actuator features Modbus RTU digital communication, 4-20mA analog control, programmable position limits, and comprehensive diagnostic capabilities. Ideal for unmanned pipeline stations, tank farm automation, refinery process control, and SCADA-integrated pipeline networks requiring remote valve operation and status monitoring.

Key Features & Characteristics

• Intelligent Multi-Turn Electric Actuator: Microprocessor-controlled actuator with non-intrusive setting via local LCD display and magnetic keypad. Programmable torque limits, position limits, and speed profiles without opening the actuator enclosure.
• Modbus RTU & 4-20mA Integration: Standard Modbus RTU (RS-485) communication protocol enables seamless integration with DCS, PLC, and SCADA systems. 4-20mA position feedback and control signals provide analog backup for critical applications.
• IP68 Submersible Enclosure: Double-sealed enclosure rated IP68 for continuous submersion in up to 7 meters of water for 72 hours, ensuring reliable operation in flooded valve pits and exposed offshore installations.
• Manual Override with Declutchable Gearbox: Integral handwheel with automatic motor-to-manual declutch mechanism allows manual operation during power failure without removing the actuator.
• Torque-Seated Shutoff: The actuator's torque-sensing control ensures consistent seating force regardless of line pressure, providing reliable bubble-tight shutoff without over-stressing valve components.
• Data Logging & Diagnostics: Onboard data logger records valve operations, torque profiles, motor starts, alarm events, and maintenance schedules for predictive maintenance analysis.

Why Choose Us

• Turnkey Valve Automation Solution: We provide a fully assembled, calibrated, and tested package—valve, actuator, mounting bracket, and coupling—eliminating field mounting and alignment issues. Every assembly undergoes a complete functional test before shipment.
• Multi-Brand Actuator Options: We can integrate actuators from leading manufacturers (Rotork, AUMA, Bernard, Limitorque equivalent) based on your site standardization requirements and spare parts strategy.
• ATEX/IECEx Certified Packages: For hazardous area installations, we supply complete ATEX/IECEx certified valve-actuator packages with full certification documentation for Zone 1 and Zone 2 applications.
• Global Field Commissioning Support: Our automation engineers can travel to your site for installation supervision, loop checking, and SCADA integration support, ensuring successful commissioning.

Technical Parameter Table

FAQ

Q: How do you prevent valve damage from excessive actuator torque?
A: The intelligent actuator includes an electronic torque limiter that monitors motor current and compares it to programmed torque curves. If the torque exceeds the set limit (adjustable 40-100% of rated), the actuator immediately stops and signals a torque alarm. This prevents stem twisting, seat damage, and gearbox failure.

Q: Can the actuator be retrofitted to existing manual valves?
A: Yes, we provide complete retrofit mounting kits including ISO 5211-compatible mounting bracket, stem coupling, and drive nut. We need the valve's stem diameter, thread form, stem height, and number of turns from open to close to engineer the correct mounting adaptation.

Q: What happens during a power failure?
A: The valve maintains its last position (fail-in-place). For fail-safe close or fail-safe open requirements, we can integrate a battery backup system (BBS) or a spring-return mechanism that automatically drives the valve to the safe position upon power loss. Please specify your fail-safe requirements when ordering.