3
NEOTECHA
NTB-NTC BALL VALVES
INSTALLATION AND MAINTENANCE INSTRUCTIONS
3.5 Requirements for the operator
This means people who are familiar with the
erection, installation, commissioning, operation
and maintenance of the product and have
appropriate qualifications relating to their
activities and functions, such as e.g.:
- Instruction in and duty to comply with all
installation-related, regional and internal
works regulations and requirements.
- Training or instruction in accordance with the
Safety Standards for personal care and use of
appropriate safety equipment and protective
workgear, like e.g. personal protection
equipment (insulated gloves or similar),
suitable for the operating conditions.
Furthermore, these people must have read
and understood these instructions.
3.6 Transport/storage
The valve is delivered with protective covers
which should protect against soiling and
mechanical effects. For this reason, the
protective covers should only be removed
immediately prior to installation.
The ball valve is shipped in the closed position.
3.7 Transport and storage conditions
- Transport and storage temperature
-20°C to +65°C.
- Protect against external force(impact,
shock, vibration).
- Do not damage the coating.
- In damp storage areas, a drying agent
or heating is required to protect against
condensation.
- Store the ball valve in a slightly open position.
3.8 Handling prior to installation
- On versions with protective covers,
only remove these immediately prior
to installation!
- Protect against the effects of weather,
e.g. dampness (or else use a drying agent).
- Proper treatment prevents damage.
4 IDENTIFICATION
Each ball valve is fitted with a rating plate giving
information on valve type and origin. When
ordering spare parts this information should
be carefully noted down each time.
Ball valves in the size range DN 15 to DN 25
have a standard rating plate with no CE mark.
Ball valves in the size range DN 40 to DN 150
are provided with a rating plate with a CE mark.
Additional identification on the valve in
accordance with DIN 19, such as: DN, PN,
manufacturer’s logos of the Neotecha AG
company . The identification of the valve
body material is cast onto the valve.
5 DIMENSIONS AND WEIGHTS
Please refer to the product documentation
for any dimensions that are not contained in
the installation and maintenance instructions
and for ball valve weights.
6 INSTALLATION
6.1 Installation in the pipeline
Fit the ball valve in the pipeline, ensuring that
the sealing surfaces on the faces of the flanges
are not damaged. The NTB ball valve can be
installed independently of the direction of
flow. On the other hand, the NTC can only be
installed in one direction, i.e. the arrow on the
side of the valve must point in the direction of
flow. Adequate clearance should be ensured
around the ball valve, so that it can be operated
and maintained easily.
The mounting flanges of the pipeline in which
the valve is to be installed must be aligned
axially and laterally, in order to prevent the
valve body being subjected to additional
stresses. Fit suitable flange packings, provided
that they are called for: then the fixing bolts
are inserted. Tightening the bolts in stages is
essential for an equal distribution of the of the
initial stress force of the clamping bolts.
The specified tightening torques must not
be exceeded.
The flanges must meet the following
requirements: cleaned and undamaged
mating surface.
Flange packings are not required with flanges
with flat sealing surfaces. Additional packings
may possibly be required with rubberized
flanges.
Manufacturer
Origin
Serial number
Manufacturer’s code
Ball valve type
Year of manufacture
Number of the
notified body
