KEYSTONE
PED - Operating and safety instructions
Gate valves
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 are indicated in
the P/T diagram in the product manual.
If in doubt, contact factory.
Check the valves functionality on a regular
basis.
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.
Installation
1. Handling and lifting should be performed according to the Maintenance & Installation
Instructions.
2. RMI valves are bi-directional unless fitted with a flow direction arrow. If a directional arrow is
fitted than the valve must be installed with the arrow pointing in the direction of the flow.
3. For detailed installation instructions refer to the Maintenance and Installation Instructions for
the specified product.
4. Preferred installation position is the shaft vertical pointing upward
5. Do not use the valve to spread the flanges.
6. Instructions whether to use or to omit flange gaskets are stated in the Maintenance &
Installations Instructions.
7. 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 seating surfaces.
8. Valve operation should be checked for open - close positions.
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Maintenance
!! Read all warning labels fitted to the valve before operation or maintenance !!
Check the valve’s functionality on a regular base. Refer to the Installation and Maintenance
Instructions for regular maintenance.
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.
Emerson reserves the right to change the contents without notice RMISB-0017-EN-1306
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