ARI Armaturen CHECKO-D DN 125-350 EN - Manual (Page 5)

Rev. 0040106001 2613 Page 2-5
Operating and installation instructions
CHECKO
®
-D DN 125-350
5.0 Installation
5.1 General notes 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.
ATTENTION !
- Remove flange covers if present.
- The interior of valve and pipeline must be free from foreign particles.
- Note installation position with reference to flow, see mark on valve. The
pressure of the medium must press against the bottom of the plug.
- 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.
- Suitable materials handling and lifting equipment should be used.
See data sheet for weights.
- Centering between the flanges is achived on the centering collar integrated in
the body and by the flange connection screws or the loose enclosed centering
ring (see product data sheet, table „Dimensions“)
- Centre gaskets between the flanges.
- Install compensators to compensate for thermal expansion of the piping.
- Critical applications, immediately downstream of pumps, compressors, etc.,
where severe turbulence and pulsating pressure surges may occur, may affect
the valve‘s function.
- Inner parts with sharp edges may cause cut injuries to the hands. Use work
gloves when changing the valve.