ARI Armaturen Strainer PN6-160 - Manual (Page 6)

Page 2-6 Rev. 0040101000 1613
Operating and installation instructions
Strainer PN6-160
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 direction, see mark on valve.
- 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.
- Connecting bolts for pipe flanges should be mounted preferably from the
counter flange side (hexagon nuts from the valve side).
At DN15-32: If valves should be mounted directly to valves, the upper flange
connecting bolts should be preferably executed with studs and hexagon nuts on
both sides.
- 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.
- Suitable materials handling and lifting equipment should be used.
See data sheet for weights.
- Leave sufficient space to remove the screen basket during installation in
pipelines.
- Installation position:
a) The screen basket should never be at the top, otherwise the dirt will
fall back into the pipe.
b) If water hammer is possible due to condensation in steam lines,
never install the trap with the screen basket at the bottom, but install
it so that it is horizontal.
- Centre gaskets between the flanges.
- Install compensators to compensate for thermal expansion of the piping.