XLC 470
6
For further information please consult us at: www.comeval.es
The set up and valve regulation has to be carried out by qualified personnel only, or
directly from CSA service. Improper actions can lead to permanent damages to the
valve, its internal components and system equipments along with possible injuries of
the people involved.
Installation
The automatic control valve XLC 400 must be always installed in a horizontal position with the
bonnet upwards. Smaller valves, (150 mm and smaller) can be installed in a vertical pipe shouldn’t
be unavoidable. Prior to that consult us and specify the orientation in the order. A stable and non
pulsating source of pressure is necessary for the proper performance of CSA control valves,
whose minimum pressure is displayed on the technical brochure and always 0,5 bar on the pilot in
addition to the headloss produced during working conditions.
Gate valves or other sectioning devices must be installed upstream and downstream of
CSA control valves to allow for maintenance.
The operating fluid must be free of air, air valves (CSA Mod. FOX 3F AS combination anti-
slam) should be installed upstream . This to avoid the accumulation of air pockets during
working conditions and allow air discharge during pipe filling and commissioning.
A suitable by-pass should be provided for servicing of the valve without interrupting the
flow. For the by-pass sectioning do not use standard gate valve, likely to get damaged
during modulation, but rely on globe pattern gate valves and/or CSA direct acting or pilot
operated modulating devices.
If not included in the order install pressure gauges upstream and downstream, a flow
measurement device is always recommended to make sure hydraulic conditions remain
within the values used for sizing.
A strainer with suitable basket and mesh should be installed ahead of the valve to protect
internal components from debris, particles and foreign material.
Sufficient space should be provided around the valve for disassembly.
Make sure to have at least 0,35 bar of static pressure (rif. Nr 5 of picture 1 on page 4)
Check direction of flow and make sure it is according to the marking on the valve’s casting.
Make sure the flanges and pipes connection are according
to the valve’s standard. The
nuts and bolts setting has to be conducted in the proper way, gradual and symmetrical, in
order not to produced additional stress and deformation.
During handling be sure not to damage the glass of the position indicator, if present.
Note to the engineer:
