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ESD valves are used to isolate the facilities in emergencies. An emergency shutdown valve is a valve fitted with a spring return actuator, allowing the valve to be
closed by the actuator spring when the actuator pressure signal is released.

Shutdown valves are widely used to reduce dangerous escalation from one system to another in the oil and gas production process for safe and proper isolation purposes.
A high integrity Emergency Shutdown System controls the general shut down valve.

ESD valves are usually quarter-turned ball valves, but they can also be sliding stem gate valves or other types, although less common.They are used to isolate pressure
and flow from a particular source during an overpressure situation or detection of a dangerous event. ESD valves are integrated into the design of the plant system
equipment and can be installed in line with any location upstream, midstream, or downstream.

Emergency shutdown valve is a new high-tech product with advantages of energy conservation, environmental protection, and convenient and fast operation.

Some features and benefits of these emergency shutdown valves

•Fast action: A shutdown valve should act quickly to reduce risk escalation. As a rule of thumb, the shutdown valve should start the shut down within 10 seconds of activation and the time taken from Full Open to Full Close is within 1-2 seconds per inch of the shutdown valve size.

•Local thermal shutdown for automatic shutdown in the event of a fire

•Remote shutdown to isolate subsystems

•The valve assembly has a regular process operating function until Forecheck is triggered

•Forecheck stops supply air to prevent feeding oxygen to the fire

Emergency Shutdown Valves are a fundamental part of the safety systems associated with oil and gas, utility, and other hazardous processes. As the name suggests, these valves are not
intended for controlling the process itself but rather for protection. The valves are of fail to closed nature to contain the liquid inventory.

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Typical Industry Applications:
• Oil Production Start-Up/ Shut-Down
• Gas & Condensate Production
• Gas Injection
• Gas Lift
• Pump Discharge
• Overboard Dump Applications
• Chemical Injection
• Fracturing Clean-Up
• Methanol Injection
• Flaring

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