Flowserve Valtek Mark, Safety Manual

Page: 9 / 13

4. Installation and Commissioning
4.1 Installation
The Mark Series valve must be installed per standard practices outlined in the Installation Manuals.
The environment must be checked to verify that environmental conditions do not exceed the ratings.
The Mark Series valve must be accessible for physical inspection.
4.2 Physical Location and Placement
The Mark Series valve shall be accessible with sufficient room for pneumatic connections and shall
allow manual proof testing.
Pneumatic piping to the valve shall be kept as short and straight as possible to minimize the airflow
restrictions and potential clogging. Long or kinked pneumatic tubing may also increase the valve
closure time.
The Mark Series valve shall be mounted in a low vibration environment. If excessive vibration can be
expected special precautions shall be taken to ensure the integrity of pneumatic connectors or the
vibration should be reduced using appropriate damping mounts.
4.3 Pneumatic Connections
Recommended piping for the inlet and outlet pneumatic connections to the Mark Series valves is
¼”
to ½” stainless steel tubing. The length of tubing between the Mark Series valve and the control
device, such as a solenoid valve, shall be kept as short as possible and free of kinks.
Only dry instrument air filtered to 50 micron level or better shall be used. The process air pressure
shall meet the requirements set forth in the installation manual. The process air capacity shall be
sufficient to move the valve within the required time.
5. Operation and Maintenance
5.1 Proof test without automatic testing
Refer to applicable FMEDA for proof testing information.
FMEDA
Report Number
Mark One Control Valve
FLO 10-01-53 R001
Mark Six Control Valve FLO 10-01-53 R002
Survivor Control Valve FLO 10-01-53 R003
Mark One Three-way FLO 10-01-53 R004
Valtek Spring Cylinder Linear Actuator FLO 10-01-53 R005
5.2 Proof test with automatic partial valve stroke testing
An automatic partial valve stroke testing scheme that performs a full stroke of the isolation valves in
the Mark Series valve and measures valve movement timing will detect most potentially dangerous
failure modes. It is recommended that a physical inspection (Step 2 from Table 1) be performed on a
periodic basis with the time interval determined by plant conditions. A maximum inspection interval of
five years is recommended.