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3 Correct use
The GEMÜ valve is suited for use as defined
in the data sheet.
Please adhere to the following instructions
in order to achieve the intended function
from our products. Pay attention to the
information on the product label!
Only use the valve as a shut-off valve and
for permissible media in accordance with
the data sheet.
Any other use or use above and beyond this
is not permitted and GEMÜ shall accept no
liability for any damages resulting from this.
The risk is solely the user's.
When planning the use of the device and
when operating it, please pay attention to
relevant generally known technical safety
regulations. Take appropriate measures to
exclude accidental operation and non-
permissible influences.
Designers, plant constructors and operators
are always responsible for the positioning
and installation of valves.
Design and installation errors influence the
safe functioning of the valve and create
potentially hazardous situations. It is there-
fore important to pay special attention to
the following points:
- Install the piping so that it stops all harmful
pushing and bending forces and all
vibrations and stress from affecting the
valve body during installation and operation
in order to avoid the body becoming
damaged or breaking.
- Keep piping design to pertinent norms and
regulatory codes and to good engineering
practice.
- When painting the pipework, do not paint
the valves and bolts (functional impair-
ment).
- Protect the valves against harmful
environmental influences.
IMPORTANT
Incorrect use of the valve leads to
- damage,
- leakage
- or destruction by corrosive chemicals.
Possible consequences include the
emission of media or disturbances to
the manufacturing process!
The design, manufacturing and testing of
GEMÜ valves is subject to a QA system
according to DIN EN ISO 9001 and the
European Pressure Equipment Directive
97/23/EC.
The prerequisite for this is a normal load,
e.g.:
- Media with no special corrosive, chemical
or abrasive influence
- Normal flow velocities dependent on the
type of medium
- Temperature gradients and pressure ratings
- No extra explosion protection
- No additional external influencing factors
such as piping forces, vibration, wind load
stress, earthquakes, corrosive environ-
ments, fire, traffic loads, decay influences
from unstable fluids etc.
The purchaser must clearly and entirely
specify loads differing from standard
operation so that the valve manufacturer
can elaborate appropriate measures and
make proposals. These measures can
influence e.g:
- Material selection
- Additional wall thickness
- Seal selection
- Protection of areas likely to wear out quickly
- Adaptation for use in potentially explosive
areas
- Avoidance of non-permissible overpressure
and non-permissible temperatures
Failure to regard this warning may lead to
personal injury and damage to property, e.g:
- Injuries due to escaping media
(cold / hot, poisonous, under pressure,...),
- Impairment of the function or destruction
of the valve.
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