ADCA
VAL
S
TEAM
ADCA
We reserve the right to change the design and material of this product without notice.
IMI PV25G.20 E 04.16
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For the problems that cannot be solve with the help of this instructions, please contact the supplier or the
manufacturer.
Installation area requirements:
The installation area should have easy access and provide enough space for maintenance and removing
operations.
The pipework before and after the control valve, must be sized in order to avoid that the max flow speed
recommended, for the fluid in question, is exceeded.
In order to allow installation and maintenance work without emptying the system, stop valves should be installed
upstream and downstream of the control valve.
If the system cannot be stopped for maintenance it is recommended that isolating valves are installed upstream
and downstream of the control valve together with a by-pass manual regulating valve. The process can be then
controlled manually during the control valve maintenance. The by-pass must be kept close during the normal
operation.
To control the pressure, manometers shall be installed upstream and downstream of the valve, (if aplicable).
Procedure:
Prior to install check that the product is suitable for the intended application: materials and
pressure/temperature ratings.
Before installing remove plastic covers placed on flanges or connection ends. The equipment has an arrow or
Inlet/Outlet designations. Be sure that it will be installed on the appropriate direction.
Take care with jointing material to ensure that none may be permitted to block or enter the valve.
Control valves are recommended to be fitted with the centre line of the valve in a vertical position to ensure that
the best results are obtained. For the horizontal installation, please contact the manufacturer.
An ADCA pipeline strainer should be installed upstream of the valve to protect from dirt which could damage
the valve or cause mal-functioning. The strainer must be installed with the sieve sideways, if the medium is
steam, to prevent the collection of condensate.
The control valve pipework should be properly supported and free from strain and it should not be subjected to
undue surges of pressure. For steam installations we strongly recommend that the
control valve
is positioned
where condensation is unable to collect or that, alternatively, separators and steam traps are fitted so that the
pipework drains correctly. The start-up condition should be considered.
The pneumatic actuator is provided of two 1/4"NPT connections, one of these has a silencer. Connect the air to
the free 1/4" connection. The inlet air must be dry, oil and water
free and it’s pressure would not exceed 3,5 bar
(50 psi). The suitable control signal is displayed on the name-plate fixed on the valve yoke. If the valve is
provided with positioner see also the Installation and Maintenance Instruction
IMI PE986.10 and IMI PP981.10
.
Control valves can be supplied with different kind of actuators, positioners, converters, etc. All these
components have different limiting conditions which are specified on the nameplates and catalogues and they
must be respected. Positioners, electric actuators and other equipment have their own installation instructions.
START UP
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Current regional safety regulations should be take in to account and followed.
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Protective insulation and warning notice may be required.
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Until the start up of an existing or a new plant, the following must be checked:
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All works are completed.
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The valve is correctly installed.
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All the necessary safety devices have been installed.
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At start up, the presence of small particles in the fluid (dirt, scale, weld splatters, joint particles, remains
of Teflon tape, etc) may cause an imperfect closure of the seat. If this occurs, proceed to an accurate
cleaning.
