Bettis PressureGuard Valve Actuators

The PressureGuard™ Self-Contained Hydraulic Emergency Shutdown Systems are designed to provide reliable valve shutdown capability when an external power source is either not available or not dependable. The PressureGuard system has proven to be highly successful in years of field service under some of the most demanding operating and environmental conditions. The module can be used with either rotary or linear spring-return hydraulic operators to provide a fail-safe system adaptable to ball, plug and other quarter-turn valves as well as reverse-acting gate and other linear operated valves. The PressureGuard system offers built in temperature compensation and pressure relief. It provides the foundation for a flexible system utilizing a variety of available sensing and control options.

Typical Applications

• Emergency valve shutdown
• Surface safety valve control
• Any application in which no plant air or hydraulic supplies are available

• Key Features

• Suitable for remote, unmanned, unpowered and critical service
• Adaptable to either quarter-turn or linear operated valves
• Field-proven in extreme climatic conditions
• Standard hydraulic model for all valve sizes and configurations
• Emergency shutdown module can be local or remote mounted to customer specifications
• Eliminates requirements for plant air, fuel gas, electricity or expensive nitrogen backup systems
• Eliminates the emission of hazardous gases such as H₂S
• Eliminates corrosion problems associated with the use of fuel gas as a supply medium
• Minimum of working parts
• Modular design to simplify trouble-shooting and maintenance
• High pressure, zero leakage control
• Adaptable for use with SCADA systems, telemetry control or other remote signals as required by the user
• Fail safe design
• Backed by worldwide service and support from Bettis^® and its authorized agents

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