Nacional safety valves provide dependable overpressure protection across a wide range of industrial and process applications. Available in both spring-loaded and pilot-operated designs, they are precisely calibrated to customer set pressures to ensure stable opening, controlled blowdown, and reliable reseating. With a broad portfolio covering conventional, pilot-operated, emergency, and breather valves, Nacional solutions deliver consistent performance, compliance with international standards, and long-term operational safety in critical service environments.
Nacional Safety Valves
Safety Relief Valves
Comprehensive overpressure protection solutions delivering reliable, repeatable performance across industrial and process applications.
Specifications
Size Range
½” – 24” (model dependent)
Pressure Class
Up to ASME 2500# (model dependent)
Materials
Carbon Steel, Stainless Steel, Bronze, special alloys
Trim
Trim options to suit steam, gas, vapour, and liquid services
Construction
Spring-loaded and pilot-operated constructions
Design
Spring-loaded and pilot-operated safety valve designs to ASME Section VIII, with set pressure calibrated and certified to customer specification, ensuring stable opening, controlled blowdown, and reliable reseating.
Seat Inserts
Metal seat (soft seat options available depending on service)
Certification
ASME Section VIII, PED, CE Marked (model dependent)
Features
Wide model coverage including Model 50, 3-51, 51, 56, emergency valves, breather valves, pilot-operated safety relief valves, and silencers
Applications
Oil & Gas, Chemical & Petrochemical, Refineries, Power Generation, Pressure Vessels, Steam Systems, Storage Tanks, Pipelines, General Industrial Overpressure Protection
- ½” – 24”
- Fully European
- Up to ASME 2500#
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