ATEX - Guidelines

Protection through our products!

ATEX is a widely used synonym for the ATEX guidelines of the European Union. The ATEX name derives from the French abbreviation for ATmosphère EXplosible.

The Directive currently includes two Directives in the field of explosion protection, namely the ATEX Directive 94/9/EC and ATEX Workplace Directive 1999/92/EC.

We have appropriate compliances for the ATEX Directive 94/9/EC for a selection of our products to our customers' requirements at hand.

The ATEX product directive 94/9/EC (also known unofficially as "ATEX 95" means, because the relevant Article 95 of the EC Treaty concerning the free movement of goods) of the European Parliament the Council on the approximation of the laws of the Member States concerning equipment and protective systems intended for use in hazardous areas sets the rules for the marketing of products used in hazardous areas.

This policy has been included for the first time the non-electric devices. For example, can rotating couplings due to excessive high heat lead to rises.

The purpose of the Directive is the protection of persons working in hazardous areas. The Directive contains in Annex II to the basic health safety requirements to be considered by the manufacturer verified by appropriate conformity assessment procedures.

Since 30 June 2003 may only have such devices, components and protective systems are placed on the market that meet the ATEX Directive 94/9/EC.

This European Directive was implemented in Germany by the explosion protection regulations (11 GPSGV) into national law.

Device Group 1
Equipment for use in open-cast and underground mining
	Category M1	Category M2
Demand	very high security	high security

Device Group II
Equipment for use in other hazardous areas
	Category 1		Category 2		Category 3
Danger	constantly, frequently or occasionally over a long time		occasionally		rare and temporary
Demand	very high security		high security		normal security
Zone	Zone 0	Zone 20	Zone 1	Zone 21	Zone 2	Zone 22
Fabric Group	G	D	G	D	G	D
G=gas, D=dust

Devices in a particular category may be used only for certain areas such as Category 2 equipment only for zone 1, 2 (for gases or vapors) or for the zones 21, 22 (for dust).

Explosion Group

Gases and vapors are divided because of their special ignitability in three explosion groups (IIA, IIB and IIC). The danger increases from explosion group IIA to IIC. (The higher explosion group IIC includes for example the lower of the IIA IIB.)

temperature classes

To facilitate the planning of a plant for which the maximum surface temperature 6 temperature classes (T1 to T6) were determined. This temperature can be assigned to certain classes due to the corresponding ignition temperatures of combustible gases and vapors. For temperature classes following maximum allowable surface temperatures apply to the equipment:

Class	max. surface temperature
T1	450 °C
T2	300 °C
T3	200 °C
T4	135 °C
T5	100 °C
T6	85 °C

Equipment, for example, a higher temperature class T6 (max. heating of the device at 85 ° C) colon cancer, are also suitable for the lower temperature classes T1 to T5.

The entire guideline, we will introduce you to the latest version available:

http://ec.europa.eu/enterprise/sectors/mechanical/files/atex/guide/atexguidelines_august2008_de.pdf

Convince yourself of our top-ATEX products for your plants.

We recommend the following DÜRHOLDT-ATEX-quality products for your application:

DÜRHOLDT hose diaphragm valves

DÜRHOLDT hose pinch valves