Pfeiffer Chemie-Armaturenbau GmbH
Hooghe Weg 41 • 47906 Kempen
Phone 02152 2005-0 • Fax 02152 1580
Page 6 of 8
Operating instructions
BA 28y-01_EN
Edition June 2004
Ö
The connecting specifications for the actuator unit must match those of the control equipment. See nameplate(s) on the actuator
unit.
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Make sure the end connections of the pipeline are aligned with the piggable ball valve’s end connections and their ends have
parallel planes.
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Prior to installation, carefully clean the valve and the connecting section of the pipeline from dirt, especially hard foreign material.
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The valve can be installed in any position. However, if possible, the actuator should not be located directly underneath the
piggable ball valve.
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Make sure the arrow on the valve body corresponds with the direction of flow in the pipeline.
Note
In special cases, it may be necessary for the valve to be tightly shut against the direction of flow. The installation in such
special cases
must be determined by the operator of the pipeline
(e.g. to protect a pump).
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On inserting the valve (and any flange gaskets) into a ready mounted pipeline, keep a certain clearance between the pipeline
ends to ensure that all facings (and gaskets) remain undamaged.
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The associated instructions apply for connecting the actuator unit to the control equipment.
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After completing installation, carry out a function check using the signals issued by the control equipment. The valve must open
and close properly corresponding with the control signals. Any function errors that are recognized must be remedied before
commissioning. See also section 7 <Troubleshooting>.
Warning
Control commands that are not carried out correctly
may result in personal injury and can damage equipment
installed in the pipeline.
5
Pressure check in pipeline section
The pressure check of valves has already been carried out by the manufacturer. To check the pressure of a section of pipeline with
installed valves, the following points must be observed:
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Carefully flush newly installed pipes to remove any foreign material.
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Valve OPEN:
The test pressure should not exceed the value
1.5 x PN
(see nameplate).
Ö
Valve CLOSED:
The test pressure should not exceed the value
1.1 x PN
(see nameplate).
If a valve leaks, see section 7 <Troubleshooting>.
6
Standard operation and maintenance
Operate the valve/actuator unit over the control equipment signals. Piggable ball valves delivered with the actuator already mounted are
precisely set and should not be readjusted.
The shaft is sealed with a V-ring packing preloaded with a set of spring washers and does not require any maintenance.
Normal manual force is sufficient to operate the manual override on the actuator (if required). It is not permissible to use extensions to
increase the operating torque.
Regular maintenance work on the piggable ball valves is not necessary. But, on checking the pipeline section, there should be no
leakage at the flanged and bolted connections of the valve body or at the shaft packing. If a valve leaks, proceed as described in section
7 <Troubleshooting>.
