Page 6 of 12
Copyright © AVK Holding A/S, original version, rev. 2, 30-Oct-2019
6.2 Inspection and storage
Immediately after unloading the item should be inspected for compliance with specifications and
damage in shipment.
Compliance with specification check shall as a minimum comprise size, pressure class, actuator
pneumatic pressure and sealing rubber type. If solenoid valves are included the nominal voltage
should be checked.
Damage-in-shipment check shall comprise: stem, coating, seating and sealing surfaces,
corrosion on actuator and accessories and other evidence of mishandling during shipment.
Each item should be operated through one complete open-close cycle in the position and with
the air pressure and supply voltage in which it is to be installed.
Storage shall be under dry, cool conditions, away from direct sunlight and corrosive or
otherwise chemically active atmosphere.
7. Installation
and
commissioning
WARNING:
Prior to installation make sure that all pressurized lines involved in the installation
are isolated, depressurized and drained before starting any work. Failure to do so may result in
sudden pressure release and subsequent severe injury or death.
7.1 Installation
There is no preferred flow direction, but the stem must not deviate more than 45° from vertical,
i.e. do not install on vertical pipes and do not install with horizontal actuator.
Fig. 1
Flange bolts should be tightned bolts loosely at first, then in a diagonal sequence as shown on
fig. 2 to ensure flanges are pulled in parallel to each other. Finally, tighten bolts to torque levels
according to information from gasket manufacturer.
Fig. 2
Table 1, Bolt size
DN
Bolt size
No. of bolts
mm PN 10
PN 16
PN 10
PN 16
40
M16
M16
4
4
50 M16 M16 4
4
65
M16
M16
4
4
80 M16 M16 8
8
100
M16
M16
8
8
150 M20 M20
8
8
200
M20
M20
8
12
250 M20 M24 12
12
300
M20
M24
12
12
350 M24 M24 16
16
400
M24
M27
16
16
Max. 45°
Max. 45°