1
Contents
1.
PRODUCT DESCRIPTION .................................................................................................................. 2
1.1
How it works ............................................................................................................................ 3
1.2
Overall dimensions .................................................................................................................. 5
1.3
Technical datasheet ................................................................................................................. 6
1.3.1
Push flow situation .......................................................................................................... 6
1.3.2
Pull flow situation ............................................................................................................ 6
1.3.3
Special conditions for safe use ........................................................................................ 6
2
INSTALLATION ................................................................................................................................. 8
2.1
Valve installation direction ...................................................................................................... 8
2.2
Connecting the non‐return valve ............................................................................................ 9
2.3
Precautions for a proper use ................................................................................................... 9
3
INSTALLATION ............................................................................................................................... 10
3.1
Maintenance.......................................................................................................................... 10
3.1.1
Cleaning and checking the inside of the non‐return valve ............................................ 11
4
ATEX CERTIFICATION ..................................................................................................................... 12
4.1
Potentially explosive atmosphere ......................................................................................... 12
4.1.1
Dangerous areas classification ...................................................................................... 12
4.1.2
Dangerous areas classification ...................................................................................... 13
4.2
ATEX code description ........................................................................................................... 13
4.3
Production identification ....................................................................................................... 14
5
USEFUL INFO RELATED TO THIS MANUAL ..................................................................................... 15
6
DISMANTLING AND RECYCLING .................................................................................................... 16
7
CONTACTS ..................................................................................................................................... 17
