Direct acting PRV Mod. VRCD
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For further information please consult us at: www.comeval.es
The difference in pressure generated by the valve when closed or during closing will
produce a thrust proportional to the pressure itself.
Anchorage blocks and way of preventing valve’s movement or shifting need to be
taken into account.
Installation
The float valve should always be installed in a horizontal position, meaning the axis of the valve
versus the ground level. Vertical installation is allowed up to the DN 100 mm prior to consult with
us. The valve has to be installed between two sectioning devices, one upstream and one
downstream to allow for maintenance, with a filter upstream of it to prevent dirt from creating
malfunctioning. For the recommended flow rate and differential pressure please refer to the sizing
information displayed in the catalogue or contact us sending the project data for further assistance.
Before installation, remove foreign material such as weld spatter, oil, grease, and dirt from
the pipeline.
Prepare pipe ends and install valves in accordance with the pipe manufacture’s instructions
for the joint used.
Tighten the flange bolts or studs in a crisscross pattern and minimum of four stages.
Place the valve in the right direction following the arrow moulded on the body
If not included in the order install a pressure gauge upstream to check the maximum static
pressure reached during closing and make sure it doesn’t exceed the valve’s design
pressure
Note to Engineer:
The direct acting pressure reducing valve VRCD will regulate and
maintain a downstream pressure value according to the force of the spring, located inside
the cover, supplied with three different versions to cover :
Downstream pressure regulation from 1.5 to 6 bar (blue spring, standard)
Downstream pressure regulation from 5 to 12 bar (red spring, standard)
Downstream pressure regulation from 5 to 12 bar (blue spring, on request)
The spring range is usually indicated on the stainless steel identification plate and on the
order confirmation, should the pressure needed be outside of it contact us for an immediate
replacement of the spring, do not exert excessive torque on the spring or relief it completely
