Pneumatically Emergency Shut Down Valves SDV ESD Safety Instrumented System

The VESON Emergency Shut Down Valves (ESDV, ESD, ESV, SDV) 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 to

any location upstream, midstream or downstream.

Typical Actions from an Emergency Shutdown System

• Shutdown of part systems and equipment
• Isolate hydrocarbon inventories
• Isolate electrical equipment
• Prevent escalation of events
• Stop hydrocarbon flow
• Depressurize / Blowdown
• Emergency ventilation control
• Close watertight doors and fire door

Product Range

* Pressure Ratings : ANSI Class 150 - 2500
*Shut Off : Soft seat - tested up to Class VI
*Actuator Type : Single-acting, spring return
*Instrumentation : Pneumatic
*Size Range : 4 – 24” Metal seat - tested up to Class V
*End Connections : RFFE, RTJ, weld end
*Closing Time < 3 second (depending on size)

The emergency shutdown function is always performed by an emergency shut down valve. An emergency

shut down valve (also referred to as SDV or Emergency shutdown valve, ESV, ESD, or ESDV) is an actuated

valve designed to stop the flow of a hazardous fluid upon the detection of a dangerous event. This provides

protection against possible harm to plant team, equipment or the environment. ESDV form part of a Safety

instrumented system. The process of providing automated safety protection upon the detection of a hazardous

event is called Functional Safety which VESON has pioneered for the last three decades.

VESON offers a wide family of shutdown valves, actuators and positioners are engineered to prevent catastrophic

incidents when deviations in critical processes occur. Our product lines cover a breadth of SIL, ANSI and DIN class

ratings, providing solutions reliable enough to handle the most critical oil & gas applications, whether onshore, offshore

or processing. Shutdown valves are primarily associated with the petroleum industry although other industries also

require this type of protection system (power generation, chemical industry…)