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Copyright © AVK Holding A/S, original version, rev. 2, 30-Oct-2019
During installation in the pipeline make sure that all connecting flanges are aligned and parallel
to each other.
Make sure the gasket design and material is fit for the operating conditions (medium, pressure,
temperature, etc.).
The flanges must be clean and free from grease to achieve full sealing. Place the valve and
gaskets between the pipe flanges, and insert the bolts.
7.2 Pneumatic actuator cylinder
Connect the actuator solenoid valve to an air supply system and adjust the supply pressure to
6-8 bar. Compressed air quality should be acc. to ISO8573-1:2010 [7:4:4].
The solenoid valve is a 5/2 type and comes with two coils, one for 230VAC/50-60Hz and one for
24 VDC. Make sure to select the correct coil for your voltage and also the correct gasket
between terminal box and coil as this gasket is connected to the supply voltage and equipped
with LEDs that light up when the solenoid is energized.
An LED position indicator can be fitted on the outside of the cylinder. It is powered by 24 VDC.
Fig. 3, position indicator wiring diagram
7.3 Pressure
test
After installation, perform a pressure test on the piping system. The valve is designed to resist a
test pressure of 1.5 x PN.
8. Application
hazards
Do not install closer than 5 pipe diameters from tees, bends or other irregularities in the
piping system as these can cause disturbing turbulence that can damage the valve over time
Do not use with sludge or slurry
Do not use if the content of suspended solids exceeds 8%
Unless properly isolated the valve should not be installed in applications where the ambient
temperature can reach values below the freezing point of the liquid
Do not install in drinking water applications as it is not approved for this
Do not use with flammable liquids
Flow speed must not exceed 3 m/s
9. Operation and maintenance
WARNING:
Prior to any maintenance work that requires disassembly make sure that the
pressurized line involved is isolated, depressurized and drained before starting any
disassembly. Failure to do so may result in sudden pressure release and subsequent severe
injury or death.
In case the work includes the pneumatic actuator the air supply should be shut off and the
actuator depressurized.