OMC KA30 Series User manual

Installaon, Operaon and Maintenance Manual KA30‐en Rev.04/2018
Page 1
OMC s.r.l. Via G. Galilei, 18 - 20060 - Cassina de Pecchi (MI) - ITALY - www.omcsrl.com - Tel.: [phone]
Our products are manufactured under ISO-9001 Quality Assurance System, approved by CSQ certified under no.9190.OMC2 - FIRST ISSUE 1994/08/04
ENGLISH
INSTALLATION, OPERATION AND
MAINTENANCE MANUAL
Globe valves
SERIES KA30

Installaon, Operaon and Maintenance Manual KA30‐en Rev.04/2018
Page 2
Our products are manufactured under ISO-9001 Quality Assurance System, approved by CSQ certified under no.9190.OMC2 - FIRST ISSUE 1994/08/04
OMC s.r.l. Via G. Galilei, 18 - 20060 - Cassina de Pecchi (MI) - ITALY - www.omcsrl.com - Tel.: [phone]
ENGLISH
TABLE OF CONTENTS
1.0 SAFETY INFORMATION
1.01 INTENDED USE
1.02 ACCESS
1.03 LIGHTING
1.04 HAZARDOUS FLUIDS IN THE PIPE
1.05 ENVIRONMENTAL SITUATIONS
1.06 TEMPERATURE
1.07 SYSTEM
1.08 PRESSURIZED SYSTEMS
1.09 TOOLS AND CONSUMABLE PARTS
1.10 PROTECTION CLOTHES
1.11 QUALIFICATION OF OPERATORS IN CHARGE OF THE WORKS
1.12 HANDLING
1.13 FREEZING
1.14 OTHER RISKS
1.15 DISPOSAL
1.16 RISK OF CORROSION AND/OR EROSION
2.0 INSTALLATION
2.01 ASSEMBLY OF THE VALVE ON THE PIPE
3.0 ACTUATOR CONNECTION
3.01 PNEUMATIC ACTUATOR CONNECTION
3.02 ELECTRIC ACTUATOR CONNECTION
4.0 MAINTENANCE
4.01 VALVE/ACTUATOR SEPARATION
4.02 REPLACEMENT OF THE PLUG SEAT
4.06 REPLACEMENT OF THE STEM PACKING GLAND
5.0 TIGHTENING TORQUES
6.0 SIZES OF ACTUATOR CONNECTION
7.0 PERIODICAL OPERATIONS
8.0 AVAILABLE SPARE PARTS
9.0 PRESSURE/TEMPERATURE REPORT OMC-TUV-00 Rev.03/2018

Installaon, Operaon and Maintenance Manual KA30‐en Rev.04/2018
Page 3
OMC s.r.l. Via G. Galilei, 18 - 20060 - Cassina de Pecchi (MI) - ITALY - www.omcsrl.com - Tel.: [phone]
Our products are manufactured under ISO-9001 Quality Assurance System, approved by CSQ certified under no.9190.OMC2 - FIRST ISSUE 1994/08/04
ENGLISH
1.0 SAFETY INFORMATION
The safe operation of this product is ensured only if it is installed, commissioned, used and maintained in an
appropriate way by qualified personnel in compliance with the operating instructions.
1.01 INTENDED USE
Verify that the actuator is suitable for the intended use and application by controlling:
- that the material of which the valve is made up of is compatible with the process fluid;
- that the valve is suitable to the pressures and temperatures of the process fluid;
- to have arranged a suitable safety device which prevents, in case of valve malfunctioning, any hazardous
overpressures or overtemperatures.
The OMC valves are not intended to withstand any external stresses which can be induced by the systems in
which they are inserted. The installer must take account of these stresses and take the appropriate measures.
1.02 ACCESS
Ensure a safe access and, if required, a safe working platform (with a suitable protection) before operating on the
product. Arrange the suitable lifting means, if required.
1.03 LIGHTING
Ensure a lighting which is suitable to the required type of work.
1.04 HAZARDOUS FLUIDS IN THE PIPE
Take account of the content of the pipe or anything it may have previously contained. Be careful to: flammable
materials, substances hazardous for the health, temperature extremes.
1.05 ENVIRONMENTAL SITUATIONS
Take account of: areas at risk of explosion, lack of oxygen (such as tanks, wells, etc.…), hazardous gases,
temperature limits, high or low temperature surfaces, risk of fire (for example during welding operations),
excessive noise, moving machines.
1.06 TEMPERATURE
Wait until the temperature normalizes after the interception to prevent any risks of burn or freezing.
1.07 SYSTEM
Take account of the possible effects on the whole expected working system.
May the intended measure put the other parts of the system or the personnel at risk?
Make sure that the shut-off valves are gradually activated in order to prevent any abrupt variations to the system.
1.08 PRESSURIZED SYSTEMS
Make sure that the pressure is isolated and discharged to the atmospheric pressure in safe conditions. Take
account of a double insulation (double block and vent) and the blocking or the labelling of the closed valves. Do
not consider the system depressurized even if the pressure gauge indicates zero pressure.
During the operation the valve is pressurized. Before performing any maintenance operation or action on
the flanges and closing caps, make sure that the line is depressurized (0 bar) and at ambient temperature.

Installaon, Operaon and Maintenance Manual KA30‐en Rev.04/2018
Page 4
Our products are manufactured under ISO-9001 Quality Assurance System, approved by CSQ certified under no.9190.OMC2 - FIRST ISSUE 1994/08/04
OMC s.r.l. Via G. Galilei, 18 - 20060 - Cassina de Pecchi (MI) - ITALY - www.omcsrl.com - Tel.: [phone]
ENGLISH
1.09 TOOLS AND CONSUMABLE PARTS
Before starting the work, make sure to have at your disposal all the tools required to perform it, do not make use
of inappropriate tools. Use only OMC original spare parts.
1.10 PROTECTION CLOTHES
Take account of whether you and/or others need some clothes against the hazards, such as chemical products,
temperatures, radiations, noise, fall of objects, risks for eyes and face.
1.11 QUALIFICATION OF THE OPERATORS IN CHARGE OF THE WORKS
All works must be performed and supervised by some skilled, trained and competent personnel.
1.12 HANDLING
Use suitable lifting means for the handling of the products by assessing all the risks concerning the lifting, the
environment load, the individual and the circumstances of the work which is about to be performed.
CORRECT WRONG
1.13 FREEZING
Protect the products against frozen in environments with temperatures lower than the freezing point of the
process fluid.
1.14 OTHER RISKS
During the operation, the external surface of the product can be at temperatures which are hazardous to touch.
Take account of this risk.
1.15 DISPOSAL
For the disposal respect the legislation in force in the State/Country/Nation where the product should be disposed
of.
1.16 RISK OF CORROSION AND/OR EROSION
Periodically verify any phenomena of internal and/or external corrosion and/or erosion as they may
significantly damage the pressurized parts by locally reducing the thickness and as a consequence the
safety degree.
CORRECT

Installaon, Operaon and Maintenance Manual KA30‐en Rev.04/2018
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OMC s.r.l. Via G. Galilei, 18 - 20060 - Cassina de Pecchi (MI) - ITALY - www.omcsrl.com - Tel.: [phone]
Our products are manufactured under ISO-9001 Quality Assurance System, approved by CSQ certified under no.9190.OMC2 - FIRST ISSUE 1994/08/04
ENGLISH
2.0 INSTALLATION
All works must be performed and supervised by skilled, trained and competent personnel.
The fusion of the OMC valves’ body highlights the flow direction, the maximum operating pressure and the
material.
Before installing the valve, make sure that the pipe which channels the process fluid is clean, by performing, if
required, an energetic blowing with steam or compressed air.
The installation of a filter (pos. A Pic. 1) upstream the valve will prevent the entrance of any dirt in the plug.
To perform periodical maintenance operations of the valves installed on continuous-operation systems, it is
recommended to install two shut-off valves, located upstream (pos. B Pic. 1) and downstream (pos. C Pic. 1) of
the control valve, and a by-pass one (pos. D Pic. 1). Use the by-pass valve (pos. D Pic. 1) to manually regulate
the process when the control valve is temporarily disconnected. The two shut-off valves must have the same
internal diameter of the control valve. During the installation of the valve, make sure that the flow in the pipe goes
in the same direction as indicated by the arrow on the valve body.
Pic. 1 Installation diagram
D
A
B C E
The assembling position of the valve does not limit its operation, but it is recommended to assemble the valve
with the actuator pointed upward (pos. E Pic.1) as other positions might allow the accumulation of any impurities
which are contained in the fluid thus damaging the valve itself.
2.01 ASSEMBLY OF THE VALVE ON THE PIPE
To ensure a uniform load and a uniform alignment, the flange bolts must be gradually tighted in criss-cross
sequence, as indicated in Pic.2
Prevent any excessive tightening. Use the recommended tightening torques. Prevent any pipe
misalignment. Choose the flange gaskets according to the operating conditions.
ATTENTION!!! For valves with braze-on connections, the welding operation must be performed
only by qualified personnel and, in order to prevent any damages to the valves, keep the valve
body cold during the above-mentioned operation.
Pic. 2 Tightening sequence

Installaon, Operaon and Maintenance Manual KA30‐en Rev.04/2018
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Our products are manufactured under ISO-9001 Quality Assurance System, approved by CSQ certified under no.9190.OMC2 - FIRST ISSUE 1994/08/04
OMC s.r.l. Via G. Galilei, 18 - 20060 - Cassina de Pecchi (MI) - ITALY - www.omcsrl.com - Tel.: [phone]
ENGLISH
ATTENTION!!! Any excessive weight of the valve might damage the system structure. If required,
support the valve by using suitable devices (Pic.3) and/or ropes (Pic.4)
Pic. 4 Installation with
lifting ropes
3.0 ACTUATOR CONNECTION
3.01 PNEUMATIC ACTUATOR CONNECTION
The pneumatic actuator is provided with two 1/4"NPT connections, one of which is closed by a filter. Connect the
control air pipe to the connection which has remained free. The control air must be clean, de-humidified and free
from oils and greases and must not exceed an allowed maximum pressure. The signal required to control the
valve is provided on the plate fixed on the actuator’s yoke. If the valve is provided with a pilot positioner, refer to
its manual.
For the maintenance operations of the OMC pneumatic actuators, refer to the specific manual.
3.02 CONNECTION OF ELECTRIC ACTUATOR
For the connection of the electric actuator refer to its specific manual.
Pic. 3 Installation with
supports on the ground

Installaon, Operaon and Maintenance Manual KA30‐en Rev.04/2018
Page 7
OMC s.r.l. Via G. Galilei, 18 - 20060 - Cassina de Pecchi (MI) - ITALY - www.omcsrl.com - Tel.: [phone]
Our products are manufactured under ISO-9001 Quality Assurance System, approved by CSQ certified under no.9190.OMC2 - FIRST ISSUE 1994/08/04
ENGLISH
4.0 MAINTENANCE
All operations described below must be performed and supervised by skilled, trained and competent personnel.
The OMC valves are univocally identified by a serial number fixed on the plate located on the actuator’s yoke. To
order any spare parts or for any other need, always refer to the above-mentioned number.
During the operation the valve is pressurized. Before performing any maintenance operation or
action on the flanges and closing caps, make sure that the line is depressurized (0 bar) and
at ambient temperature.
4.01 VALVE/ACTUATOR SEPARATION
By referring to Pic. 5 (1/2”÷2”) or Pic. 6 (for valves 3”÷4”) perform the following operations:
 Set the valve to the 50% stroke
 Fully unscrew the screws (1) and remove the terminals (2)
 For valves (1/2” ÷ 2”) fully unscrew the ring nut (3).
 For valves (3” ÷ 4”) fully unscrew the screws (4).
 Remove the actuator.
To re-assemble everything the operations must be performed in the reverse order by paying attention to the
alignment of stems and to the value (A)
1 1
2
3
1
2
4
Pic. 5 Valves 1/2” ÷ 2” Pic. 6 Valves 3” ÷ 4”

Installaon, Operaon and Maintenance Manual KA30‐en Rev.04/2018
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Our products are manufactured under ISO-9001 Quality Assurance System, approved by CSQ certified under no.9190.OMC2 - FIRST ISSUE 1994/08/04
OMC s.r.l. Via G. Galilei, 18 - 20060 - Cassina de Pecchi (MI) - ITALY - www.omcsrl.com - Tel.: [phone]
ENGLISH
4.02 REPLACEMENT OF THE SEAT/PLUG
By referring to Pic. 7 perform the following operations:
 Separate the actuator from the valve body as described in the previous paragraph
 Loosen the nut (10) and fully unscrew the bolts (15).
 Separate the bonnet group (9), the complete plug (3)
 Remove any cage (5)
 Replace the sealing gasket of the balancing piston (8) by unscrewing the guide (6).
 If required, unscrew and replace the seat (2) by using the specifc wrenches
 Insert in the bonnet (9) the new plug by paying attention to grease the stem with the silicone oil.
 Always replace the body gasket (11) by carefully cleaning the supporting surfaces.
 Re-assemble everything by repeating the operations in the reverse order by consequently paying attention
to the re-alignment of stems, seat and plug.
 Gradually tighten the nuts (15) in criss-cross sequence, as indicated in the example in Pic.2 paragraph 2.01
by applying the torques indicated in chapter 5
Attention: when the plug is being replaced it is required to replace also the packing gland (see next paragraphs).
15
Pic. 7 Standard valve
10
1
2
15
9
3
8
5
6

Installaon, Operaon and Maintenance Manual KA30‐en Rev.04/2018
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OMC s.r.l. Via G. Galilei, 18 - 20060 - Cassina de Pecchi (MI) - ITALY - www.omcsrl.com - Tel.: [phone]
Our products are manufactured under ISO-9001 Quality Assurance System, approved by CSQ certified under no.9190.OMC2 - FIRST ISSUE 1994/08/04
ENGLISH
4.03 REPLACEMENT OF THE STEM PACKING GLAND
By referring to the picture corresponding to your packing gland model (from Pic.8 to Pic.9) perfom the following
operations:
 Remove the plug as described in the previous paragraphs
 Fully unscrew the screw (1).
 Remove the upper packing gland (2).
 Remove the spring (3)
 Remove the lower packing gland (4).
 Replace the O-ring (5) if provided
 Carefully clean the housing chamber and grease it with silicone oil.
 Insert the new packing gland as shown in the picture corresponding to your model
 Screw the nut (1) but not completely
 Insert the plug by paying attention to grease the stem with the silicone oil.
 Always replace the body gasket, by carefully cleaning the supporting surfaces.
 Re-assemble everything as described in the previous paragraphs
 Tighten the nut (1) as indicated in chapter 5
4
Pic. 8 “LP200” Pic. 9 “SP200” Pic. 10 “HP200” Pic. 11 “EcoPack 1”
Pic. 12 “LP400” Pic. 13 “SP400” Pic. 14 “HP400” Pic. 15 “EcoPack 2”
1
2
3
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
5
1
2
3
4
5
1
2
3
4
1
2
3
4

Installaon, Operaon and Maintenance Manual KA30‐en Rev.04/2018
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Our products are manufactured under ISO-9001 Quality Assurance System, approved by CSQ certified under no.9190.OMC2 - FIRST ISSUE 1994/08/04
OMC s.r.l. Via G. Galilei, 18 - 20060 - Cassina de Pecchi (MI) - ITALY - www.omcsrl.com - Tel.: [phone]
ENGLISH
5.0 TIGHTENING TORQUES
VALVE DIAMETER SEAT (1)
Nm ±10%
BONNET NUTS (2)
Nm ±10%
NUT (4)
Nm ±10%
1/2” 190 190
3/4” 190 190
1” 240 190
1” 1/2 550 190
2” 570 190
3” 700 240
4” 850 240
Pic. 16
4
1
2

Installaon, Operaon and Maintenance Manual KA30‐en Rev.04/2018
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OMC s.r.l. Via G. Galilei, 18 - 20060 - Cassina de Pecchi (MI) - ITALY - www.omcsrl.com - Tel.: [phone]
Our products are manufactured under ISO-9001 Quality Assurance System, approved by CSQ certified under no.9190.OMC2 - FIRST ISSUE 1994/08/04
ENGLISH
8
9
Pic. 18 Valves 3” ÷ 4”
1 5
7
Pic. 17 Valves 1/2” ÷ 2”
6
VALVE
DIAMETER
NUTS (9)
Nm ±10%
NUT (6)
Nm ±10%
RING NUT (7)
Nm ±10%
SCREWS (5)
Nm ±10%
SCREWS (8)
Nm ±10%
1/2” // 40 480 5 //
3/4” // 40 480 5 //
1” // 40 480 5 //
1” 1/2 // 40 480 5 //
2” // 40 480 5 //
3” 80 // // // 50
4” 80 // // // 50

Installaon, Operaon and Maintenance Manual KA30‐en Rev.04/2018
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Our products are manufactured under ISO-9001 Quality Assurance System, approved by CSQ certified under no.9190.OMC2 - FIRST ISSUE 1994/08/04
OMC s.r.l. Via G. Galilei, 18 - 20060 - Cassina de Pecchi (MI) - ITALY - www.omcsrl.com - Tel.: [phone]
ENGLISH
6.0 SIZES OF THE ACTUATOR CONNECTIONS
Pic. 19 Valves 1/2”
÷ 2”
Closed plug Pic. 20 Valves
3”÷4”
Closed plug
7.0 PERIODICAL OPERATIONS
24 hours after the first commissioning, control the connections to the pipe and verify the tightening of the flange
bolts. Inspect the valve every year by verifying its wear and replacing any damaged parts.
Periodically verify any phenomena of internal and/or external corrosion and/or erosion as they may significantly
damage the pressurized parts by locally reducing the thickness and as a consequence the safety degree.
8.0 AVAILABLE SPARE PARTS
DESCRIPTION PICTURE POSITION
Seat 7 2
Plug 7 3
Body Gasket 7 11
Sealing gasket of balancing piston 7 8
Stem packing gland 8-9-10-11-12-13-14-15 //
ATTENTION!!!The OMC valves are univocally identified by a serial number fixed on the plate located
on the actuator’s yoke. To order any spare parts or for any other need, always refer to the above-
mentioned number.
9.0 PRESSURE/TEMPERATURE RELATIONSHIP
For the pressure regression in relation to the temperature refer to the document:
- OMC-TUV-00
The actual use of the valve depends on the combination of the materials of which it is made up.