ATEX UNLOADER AND RELIEF VALVES
SAFETY NOTE
SN03
Rev. 00
Date 27/10/2020
Pag. 3 of 10
1. INTRODUCTION
PLEASE READ THE FOLLOWING INSTRUCTIONS CAREFULLY BEFORE INSTALLING ANY EC-MARKED PART (UNLOADER
OR RELIEF VALVE), ACCORDING TO THE ATEX PARTS DIRECTIVE 2014/34/EU IN A POTENTIALLY EXPLOSIVE
ATMOSPHERE AS DEFINED IN THE ATEX WORK ENVIRONMENT DIRECTIVE 99/92/EC
. This manual must be brought to
the attention of the personnel working with the valve, and must be illustrated to the personnel qualified for
maintenance and repair of the valve. Any substantial modification to the valve will not be allowed.
Any substantial modification must be authorized by P.A. S.p.A. (for a broader definition of substantial modification,
please see maintenance manual).
2. DESCRIPTION OF THE PRODUCT
2.1 CLASSIFICATION & MARKING
The unequivocal identification of the equipment is to be verified by the data imprinted on the body and by the
declaration of conformity attesting that the valve has been produced using an evaluation, design and manufacturing
process which complies the essential safety requirements of Directive 2014/34/EU.
The assembler has the responsibility to verify the compliance with other EU directives.
The marking of the valve is:
II 2 G Ex h IIC T6 Gb
II 2 D Ex h IIIC T85°C Db
Ta: 0°C / +70°C
where:
Symbol CE Ex: in accordance with directive 2014/34/EU
Group II: suitable on surface
Category 2: suitable in zones 1 – 2 for gas and in zone 21 -22 for dust
Substance type: G (gas) and D (dust)
Specific type of protection: “Ex h” (construction safety)
Group of gas/dust: IIC (gas) and IIIC (dust)
Temperature Class/Max surface temperature: T6 (gas) and T85°C (dust) (see note 1)
EPL: Gb (gas) and Db (dust)
Ambient Temperature: 0 ÷ +70 °C
Acknowledgement of receipt - EU: XXXXXXXXX (the number will be communicated after the receipt)
Additional marking on equipment: material of the Seals: E – N – K – V (see note 2)
The measures of prevention and protection described in this manual do not determine the level of safety required if
the valves will not be used according to the provisional use, nor if they were not installed and subjected to
maintenance according to the terms of use or appropriate requirements.
