ARI Armaturen BR015-ZIVA-G EN - Manual (Page 7)

Rev. 0040201000 0511 Page 7
Operating and installation instructions
ZESA
®
/ GESA
®
/ ZIVA
®
-Z / ZIVA
®
-G
5.0 Installation
5.1 General remarks on installation
The following points should be taken into account besides the general principles governing
installation work:
- Planners / construction companies or operators are responsible for positioning and
installing products.
- The valves are designed for application, not influenced from weather.
- For application outside or in adverse environments like corrosion-promoting conditions
(sea water, chemical vapours, etc.), special constructions or protective measures are
recommended.
- The valves are not permitted for subsurface installation.
5.2 Installation of accessories
Optional accessories (e.g. limit switches) supplies with valves must be fitted as required for
their functions as shown in the plants of the plant.
ATTENTION !
- Remove flange covers if present.
- The interior of valve and pipeline must be free from foreign particles.
- The direction of flow need not be taken into account.
- Steam line systems should be designed to prevent water accumulation.
- Lay pipelines so that damaging transverse, bending and torsional forces are
avoided.
- Protect valves from dirt during construction work.
- Connection flanges must mate exactly.
- Valve mountings such as actuators, handwheels, hoods must not be used to
take external forces, e.g. they are not designed for use as climbing aids, or as
connecting points for lifting gear.
- Flooding of the butterfly valve is not permissible.
- Suitable materials handling and lifting equipment should be used.
See data sheet for weights.
- The shaft can be in any position except for DN350 up to DN600 (horizontal
shaft preferably).
- No gaskets required between flanges, flexible gaskets are not allowed.
- The butterfly valve must be installed in open position if possible, but the disc
should not protrude beyond the housing.
- Large actuators with horizontal application must be supported.
- Avoid damage to the rubber sheathing during handling, storage and installation.
- Do not heat the valve (e.g. by welding, grinding, etc.) above its service
temperature (refer to data sheets).
- Protect actuators from excessive ambient temperatures
(refer to operating instructions for actuator).
- If the butterfly valve is in operation as a pipeend valve, regard DIN EN 294
point 5.