3 R 74 en
5
1.7
Recycling and disposal
Most valve parts can be recycled if sorted according to
material. Most parts have material marking. A material
list is supplied with the valve. In addition, separate
recycling and disposal instructions are available from
the manufacturer. A valve can also be returned to the
manufacturer for recycling and disposal against a fee.
1.8
Safety precautions
2
TRANSPORTATION, RECEPTION
AND STORAGE
Check the valve and the accompanying devices for any
damage that may have occurred during transport.
Store the valve carefully before installation, preferably
indoors in a dry place.
Do not take the valve to the intended location and do
not remove the flow port protectors until the valve is
installed.
The valve is delivered in the closed position. A valve
equipped with a spring-return actuator is delivered in
the position determined by the spring.
3
INSTALLATION AND COMMISSIONING
3.1
General
Remove the flow port protectors and check that the
valve is clean inside.
3.2
Installing in the pipeline
Flush or blow the pipeline carefully before installing the
valve. Foreign particles, such as sand or pieces of
welding electrode, will damage the segment sealing
surface and seats.
The valve has an arrow indicating the flow direction.
Install the valve in the pipeline so that the flow direction
of the pipe corresponds to that marked on the valve.
The mounting position does not place restrictions on
operation of the valve, actuator or positioner. You
should, however, avoid installing the valve so that the
shaft points downwards because impurities travelling in
the pipeline may then enter the body cavity and dam-
age the gland packing. See Fig. 8.
The RA and RE1 valves should be applicable to the
pipe flanges, see the table in 11.19.
Choose flange gaskets according to the operating con-
ditions.
Do not attempt to correct pipeline misalignment by
means of flange bolting.
CAUTION:
Do not exceed the valve performance limitations!
Exceeding the limitations marked on the valve may
cause damage and lead to uncontrolled pressure
release. Damage or personal injury may result.
CAUTION:
Do not dismantle the valve or remove it from the
pipeline while the valve is pressurized!
Dismantling or removing a pressurized valve will result in
uncontrolled pressure release. Always isolate the relevant
part of the pipeline, release the pressure from the valve and
remove the medium before dismantling the valve.
Be aware of the type of medium involved. Protect your-
self and the environment from any harmful or poisonous
substances. Make sure that no medium can enter the
pipeline during valve maintenance.
Failure to do this may result in damage or personal injury.
CAUTION:
Beware of the segment movement!
Keep hands, other parts of the body, tools and other
objects out of the open flow port. Leave no foreign
objects inside the pipeline. When the valve is actuated,
the segment functions as a cutting device. The segment
position may also change when the valve is moved.
Close and detach the actuator pressure supply pipeline
for valve maintenance. Failure to do this may result in
damage or personal injury.
CAUTION:
Protect yourself from noise!
The valve may produce noise in the pipeline. The
noise level depends on the application. It can be
measured or calculated using the Metso Nelprof soft-
ware. Observe the relevant work environment regula-
tions on noise emission.
CAUTION:
Beware of a very cold or hot valve!
The valve body may be very cold or very hot during
use. Protect yourself against cold injuries or burns.
CAUTION:
When handling the valve or the valve package,
take its weight into account!
Never lift the valve or valve package by the actuator,
positioner, limit switch or their piping.
Place the lifting ropes securely around the valve body
(see Fig. 7). Damage or personal injury may result
from falling parts.
Fig. 7
Lifting the valve
CAUTION:
When handling the valve or the valve package,
take its weight into account!
