2
INSTALLATION
1. Handling and lifting should be performed
according the Maintenance and Installation
Instructions.
2. Keystone valves are bi-directional unless
fitted with a Flow Direction Arrow.
If a directional arrow is fitted then 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 specific product.
4. Preferred installation position of butterfly
valves is the shaft horizontal and the lower
disc-edge opening downstream.
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 and
Installation 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 seat.
8. Valve operation should be checked for
open - close positions. The disc should have
enough clearance from the pipeline in all
positions.
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 gasses 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 Keystone original spare parts only.
For detailed information on valve (dis)assembly
and part replacement, refer to the Maintenance
and Installation Instructions.
KEYSTONE
OPERATING AND SAFETY INSTRUCTIONS
PED - RESILIENT SEATED BUTTERFLY VALVES F320/322
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Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user.
Keystone is a mark owned by one of the companies in the Emerson Automation Solutions business unit of Emerson Electric Co. Emerson Automation Solutions,
Emerson and the Emerson logo are trademarks and service marks of Emerson Electric Co. All other marks are the property of their respective owners.
The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be construed
as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. All sales are governed by our terms and
conditions, which are available upon request. We reserve the right to modify or improve the designs or specifications of such products at any time without notice.
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