GESTRA ZK 29, Installation Instructions Manual

Page: 19 / 60

19
 Switch the installation off and protect it against
unauthorised or unintended re-activation.
Connecting the equipment
DANGER
Incorrectly connected equipment can result
in accidents with extremely severe injuries
or death.

Make sure that only specialist
personnel connect the equipment to
the pipe.
 Make sure that the direction of flow in
the pipe matches the flow direction
arrow on the equipment.

Make sure that the connected pipe
does not subject the body to any
stress (forces or torques) during
installation and operation.
Specialist personnel must have knowledge and
experience of the type of pipe connection used.
An arrow indicating the flow direction is
provided on both sides of the inlet of the
valve body.
Attention!
Equipment will be damaged if the support
is undersized or in the wrong place.
 Mount the support to the pipes next to
the equipment.
 Make sure that the supports are
strong enough to hold the weight of
the equipment and to withstand the
forces that occur during operation.

Contact the manufacturer if you want
to mount the supports directly to the
equipment.
The equipment is designed for installation
with the stem in vertical position and the
actuator mounted on top.
Other installation positions are possible.

Contact the manufacturer if you want to
mount the equipment in a different
position of installation.

Mount the equipment in the desired installation
position.

Make sure that the equipment is supported by
the pipes.
If the supports can only be attached
directly to the equipment ask the
manufacturer for more information on
possible positions for the supports.

Connect the end connections of the equipment
properly to the pipes.
Some materials require a subsequent heat
treatment of the welds after the equipment has
been welded in place. If you want to perform a heat
treatment please observe the following notes:
You do not have to remove the internals of
the equipment in order to perform the heat
treatment.
Attention!
The equipment might get damaged.
 Make sure that only qualified
personnel carries out the heat
treatment.

Before starting the heat treatment
make sure that the equipment is not
insulated.
Specialist personnel must be highly qualified and
fully experienced in making welded joints with the
type of material used. For information on the
materials of the equipment see the nameplate on
the equipment.
 Make sure that the valve is at its middle
position, i. e. half stroke.