SEMPELL HIGH PRESSURE FORGED GLOBE VALVES
PRESSURE SEAL T, Y AND ANGLE PATTERN, BUTTWELDED OR FLANGED ENDS
Operating and Safety instructions
These instructions summarise the main
warnings concerning the routine operations
as per the related installation and
maintenance manual.
STORAGE
WARNING
Storage in an open area for a limited period
can be considered only in case the valves have
appropriate packing (packed incases lined with
tarred paper, and contents well protected with
barrier sacks).
• Do not place consignment packages directly on
the ground.
• Do not expose consignment packages to the
weather or directly to the sun.
• Check the packages every two months.
INSTALLATION
In case the valve is equipped with electric
actuator, please refer to the following warnings:
WARNING
• See the actuator user manual for the actuator
preparation.
• In the open direction, only the stop has to
be set with the limit switch. In case the limit
switch is not adjusted, the backseat will be
destroyed by the high torque.
• In the close direction, the end-stop also has
to be set with the limit switch as the first stop.
The torque switch in the close position has to
be set as a second stop.
• The adjustment of the limit switches in both
end-stop positions has to be handled when the
actuator is assembled to the valve according to
the operation instructions.
IMPORTANT
• Before welding, make sure the valve is
completely open.
• Verify that the direction of the flow of the line
corresponds to the arrow indicated on the valve
body.
• Valves without the arrow are bi-directional.
• It is recommended to perform piping flushing
before the valve installation. If this is not
possible, the valves must be set with the disc in
full open position before starting with flushing.
• If piping system is pressurized with water for
testing, and in case the piping system has been
shut down after testing for a long time, the
following recommendations should be adopted:
a. Use corrosion inhibitor with water to
pressurize the piping system.
b. After testing, the piping system should
be depressurized and the test water
completely drained.
• For operating temperatures above 200°C
(392°F) a thermal insulation of the body is
recommended.
HANDLING
WARNING
• Before lifting or handling the valve or the valve/
actuator assembly, make sure you have no
limitations to do it.
• Check if there are some safety messages
attached to the lifting points of the valve or to
the actuator (RED RIGID LABEL) and, if any,
find the proper document in the user manual
which describes how you can operate under
safety conditions.
• For valve handling and/or lifting, the lifting
equipment (fasteners, hooks, etc.) must be
sized and selected while taking into account
the valve weight indicated in the packing list
and/or delivery note. Lifting and handling must
be made only by qualified personnel.
Do not use the lifting points located on the
actuator, if any, to lift the valve. These lifting
points are for the actuator only.
• Caution must be taken during the handling
to avoid that this equipment passes over the
workers or over any other place where a
possible fall could cause damage. In any case,
the local safety regulations must be respected.
MAINTENANCE
WARNING
• Depressurize the line before starting any
maintenance. Failure to do so may cause
serious personal injury and/or damage to the
valve.
• In case of valve removal, depressurize the line
before starting any operation with the valve in
open position. Then, close the valve.
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VCOSI-02219-EN 17/10
SEMPELL HIGH PRESSURE FORGED GLOBE VALVES
PRESSURE SEAL T, Y AND ANGLE PATTERN, BUTTWELDED OR FLANGED ENDS
IMPORTANT
• To ensure tightness of P.S. gasket, pull up bolts must be tightened when the valve is under fully
hydrostatic pressure test or twenty-four hours in operation.
• Yearly checking of bolt torque is recommended (See Tables 1 and 2).
• The segment ring has to be fixed by the safety ring. Ensure that the segment ring is in the correct
position.
TABLE I: BOLT TORQUE FOR PACKING BOLTS
Bolt
Stem diameter
in mm mm Nm
1.000 25.40 M16 14
1.250 31.75 M16 14
1.375 34.92 M20 18
1.750 44.45 M20 18
2.000 50.80 M24 20
2.250 57.15 M24 20
2.500 63.50 M27 23
2.750 69.85 M27 23
3.000 76.20 M27 23
3.250 82.55 M30 28
3.750 95.25 M33 35
diameter Torque
TABLE II: BOLT TORQUE FOR BONNET BOLTS
Diameter Torque
in mm Nm
⅜ M10 30
½ M12 70
⅝ M16 140
¾ M20 260
1 M24 580
1⅛ M27 760
1¼ M30 1350
According to PED-ESR, par. 3.3 and related, the design pressure and temperature are indicated
on the nameplate.
PARTS LIST
1 Year
2 Type
3 Size
4 Class
5 N.A.
6 Body
7 Stem
8 Seat
9 Disc
10 Designer
11 temperature
12 Pressure
13 Shell test
14 Differential pressure set up actuator
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Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user.
Sempell 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.
15 Temperature minimum
16 Pressure at t.min
17 Temperature maxim
18 Pressure at t.max
19 N.A.
20 N.A.
21 Serial number
22 PED category
23 Fluid
24 N.A.
25 Tag
26 Order number
27 N.A.
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