ESD valves
3 in-depth engineering guides on ESD valves — specification, selection, testing and procurement.
Everything on ESD valves
Vajra's engineering team has published 3 technical guides covering ESD valves for industrial valve selection, specification, testing and procurement. Browse the full set below.
Partial Stroke Testing (PST) for ESD and Shutdown Valves: SIL Proof-Test Guide
Emergency shutdown valves sit idle for years, and a valve that will not move on demand is a dangerous failure. Partial stroke testing moves the valve a small amount without disrupting the process to prove it can move, raising diagnostic coverage and extending proof-test intervals. This guide covers PST in the context of IEC 61508 and IEC 61511 functional safety.
Emergency Shutdown (ESD / SDV) Valve Guide: SIL, Partial Stroke & Fail-Safe
Emergency shutdown valves are the final element of a safety instrumented function - they must close on demand, every time, even on fire or power loss. This guide covers fail-safe design, SIL, partial-stroke testing, and selection for ESD service.
Industrial Valve Actuators: Pneumatic, Electric and Hydraulic Selection Guide
Selecting the right actuator type for an automated valve is as critical as selecting the valve itself. Pneumatic, electric, and hydraulic actuators each have distinct characteristics, advantages, and limitations that make them suitable for different process environments and control requirements.
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