ARI Armaturen BR015-ZIVA-G EN - Manual (Page 3)

Rev. 0040201000 0511 Page 3
Operating and installation instructions
ZESA
®
/ GESA
®
/ ZIVA
®
-Z / ZIVA
®
-G
4.0 Description
4.1 Scope of applications
Butterfly valves are used for “interruption or restriction of the flow of liquids and gases”.
The information complies to the Pressure Equipment Directive 97/23/EC.
It is the responsibility of the machine planner to ensure compliance.
The special markings on the valve must be taken into account.
Refer to the catalogue sheet to see which materials are used in standard versions.
Please contact the supplier or the manufacturer if you have any questions.
4.2 Operating principles
The valve is closed by turning the disc shaft clockwise.
The shaft moves through 90°.
ATTENTION !
- Refer to the data sheet for applications, limits on use and possibilities.
- Certain media require or preclude the use of special materials.
- The valves are designed for standard operating conditions. If conditions exceed
these requirements, e.g. aggressive or abrasive media, the operator should
state the higher requirements when ordering.
- Valves made from grey cast iron are not authorised for use in systems subject
to TRD 110.