KEYSTONE RMI PED - NON RETURN VALVES
Operating and Safety inStructiOnS
Before installation, these instructions must be fully read and understood
Hazard potentials
• disregarding of instructions
• improper use of product
• insufficiently qualified personnel
Ensure that valve materials are compatible with
the pipeline fluid.
Pressure/temperature limits indicated in the P/T
diagram in the product manual.
If in doubt, contact factory.
Check the valves functionality on a regular basis.
INSTALLATION
1. Handling and lifting should be performed
according to the Maintenance & Installation
Instructions.
2. The valve must be installed with the arrow
pointing in the direction of the flow.
3. For detailed installation instructions refer to
the Maintenance & Installation Instructions
for the specified product.
4. Do not use the valve to spread the flanges.
5. Instructions whether to use or to omit flange
gaskets are stated in the Maintenance &
Installations Instructions.
6. In case the valve is used as spool piece
during erection of piping, do not finish weld
the flanges to the pipes with the valve bolted
between the flanges as this will result in
serious heat damage to the seat.
7. Valve operation should be checked for
open - close positions. The disc should have
enough clearance from the pipeline in all
positions.
8. For commissioning of the valve see
Installation & Maintenance instructions.
MAINTENANCE
!! Read all warning labels fitted to the valve
before operation or maintenance !!
Check the valve’s functionality on a regular
basis. No additional routine maintenance is
required.
REPAIR
WARNING
The line must be depressurized before carrying
out any repairs to the valve. In case of dangerous
pipeline fluids, the pipeline should be drained and
flushed with an appropriate cleaning fluid. Failure
to do so may cause serious personal injury and/
or equipment damage. Before disassembling the
valve ensure the valve has been decontaminated
correctly from any harmful gases or liquids and that
it is within a safe temperature range for handling.
Personnel making any adjustments to the valves
should utilize suitable equipment. All required
personal protection means should be worn. Only
qualified personnel trained in all aspects of manual
and mechanical handling techniques must carry out
lifting and handling of valves.
Use RMI original spare parts only. For detailed
information on valve (dis)assembly and part
replacement, refer to the Maintenance & installation
instructions.
PRECAUTIONS
WARNING
For safety reasons, it is important to take
following precautions before you start work on
the valve:
1. Personnel making any adjustments to the valve
should utilize suitable equipment. All required
personal protection means should be worn.
2. The line must be depressurized before
installing the valve. In case of dangerous
pipeline fluids, the pipeline should be drained
and flushed properly with an appropriate
cleaning fluid.
3. Personnel trained in all aspects of manual and
mechanical handling techniques must carry out
handling of all valves.
4. Do not use the valve beyond specification. The
valve, handle, actuator and other parts may not
be used as ‘climbing tools’
5. Ensure the valve pressure/temperature
specification as indicated on the identification
label is within the pressure/temperature limits
of the application. A full pressure/temperature
diagram can be obtained from the product
manual. With the use of figure and trim number
on the valves identification label, the correct
diagram can be found.
TAGPLATE
Type of valve
Material identification
Uni- or Bidirectional
Size
Sales order number
www.valves.emerson.com © 2017 Emerson. All rights reserved.
VCOSI-02135-EN 15/11
© 2017 Emerson. All rights reserved.
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