SNB-SNC ball valves
Installation and Maintenance Instructions
Emerson reserves the right to change the contents without notice
page 3
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° 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
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 DN15 to DN25 have a standard rating plate with no CE mark. Ball
valves in the size range DN40 to DN150 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.
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
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 SNB ball valve can be installed independently of the direction of flow. On the
other hand, the SNC 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
