Within chemical plants, refineries, and gas processing facilities, ignition risks demand fail-safe fluid control. Pneumatic actuation provides inherent safety in these volatile settings, eliminating electrical sparks while enabling rapid shutdowns. Neway on-off valves exemplify this critical technology, combining explosive-atmosphere compliance with millisecond response times. Their robust design addresses core safety challenges while supporting advanced control functions.
Intrinsic Safety in Flammable Environments
Traditional electric valves pose ignition hazards through arcing or overheating—a fatal flaw near combustible vapors. Neway on-off valves circumvent this risk entirely using compressed air actuation. With no electrical components near process media, they achieve ATEX/IECEx certification for Zone 1/Division 1 hazardous areas. The valves’ spring-return mechanism ensures automatic closure during air supply failure, preventing uncontrolled releases. This failsafe design is vital for LNG terminals or solvent production, where leaks could trigger catastrophic fires. Engineers prioritize these pneumatic systems not just for compliance, but for fundamentally eliminating ignition sources at the point of control.
Modular Control for Complex Safety Functions
Beyond basic isolation, Neway on-off valves enable sophisticated safety interlocks via configurable accessories. By integrating position transmitters, pressure switches, or solenoid pilots, they perform critical roles like:
HIPPS (High Integrity Pressure Protection): Isolating overpressure events within 50ms.
PST (Partial Stroke Testing): Verifying valve functionality without full shutdowns.
QA (Quick Actuation): Triggering emergency depressurization sequences.
The valves’ compact pneumatic actuators deliver <1-second operation, exceeding manual response capabilities. For maintenance, Neway’s modular assembly allows field-upgrades of seals or control modules without removing the valve body—minimizing downtime during safety system retrofits.
Conclusion
Specifying Neway Valve‘s on-off valves delivers uncompromising safety and operational flexibility for high-risk processes. Their spark-free pneumatic operation inherently mitigates explosion hazards, while modular accessories enable tailored safety instrumented functions. As industries tighten process safety standards, such purpose-engineered valves become indispensable layers of protection—proving reliability need not compromise adaptability.
