What is ATEX and why is it relevant?

ATEX stands for „Atmosphères Explosibles“ and refers to potentially explosive atmospheres, such as those found in many industrial applications – for example in the oil and gas industry, in chemical or pharmaceutical plants and in food processing. The European ATEX Directive 2014/34/EU regulates the requirements for devices and protective systems that may be used in potentially explosive atmospheres. The focus here is on whether a product has its own potential source of ignition. A total of 13 sources of ignition are listed in DIN-EN 1127-1. Only then does the product fall under the certification obligation of this directive.

LESER safety relief valves in the ATEX area

Safety relief valves from LESER are suitable for use in potentially explosive atmospheres - even without their own ATEX certification. The reason: When used as intended, LESER safety relief valves do not pose any danger of ignition for the potentially explosive atmosphere. They do not have any potential ignition sources as defined by DIN EN 1127-1. They therefore do not fall under the ATEX Directive 2014/34/EU and do not receive ATEX certification.

This means that all safety relief valves and change-over valves listed in the LESER manufacturer's declaration can be used in potentially explosive atmospheres without restriction.