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Copyright © AVK Holding A/S, original version, rev. 1, 8-July-2021
7.2 Commissioning
7.2.1 Commissioning of the PSV
⚫
Confirm pilot spring range within regulator and spring identification label are the same.
⚫
Close ball valve 2 and open ball valve 1.
⚫
Close system downstream isolation valve E and open system upstream isolation valve A.
⚫
Loose plug 5 to remove air from the bonnet of the valve then tight it again.
⚫
Pull PSV regulator 3 to unlock and turn anticlockwise until it open fully.
⚫
Open partially system downstream isolation valve E slowly.
⚫
Open ball valve 2, turn slowly clockwise PSV pilot regulator 3 until desired upstream pressure
is achieved.
⚫
Push PSV regulator 3 to lock, open slowly system downstream isolation valve E until it open
fully, valve is now set.
1
– Upstream ball valve
2
– Downstream ball valve
3
– PSV
regulator
4
– Needle valve
5
– Plug
6
– Filter
8. Application hazards
Valves must only be installed in a piping system whose pressure and temperature do not exceed
its nominal pressure (PN)
If system testing will subject the valve to pressures more than the working pressure rating, this
B
C
D
E
A
