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Technical leaflet Cim 776 & Cim 777
Revisione 0
Emissione 03/2011
They are available in sizes from DN15 up to DN50 (up to DN25 for “Low Flow” version only) and work
properly within a differential pressure operating range between minimum values as specified in “Graphs and
Tables” section of this brochure, and the maximum value of 400 KPa.
The main features of balancing valves
Cim 776
and
Cim 777
are the following:
•
Easy required flow rate selection using presetting dial.
•
Automatic balancing in the event of fluctuating pressure conditions in system branches.
•
Flow rate modulation along the whole electric actuator stroke.
•
Flexibility if the system is modified after the first installation.
•
Reduction of balancing costs, improved energy saving and high environmental comfort.
•
Easy flushing procedure thanks to quick and simple removal of differential pressure control cartridge
placed inside valve body.
•
Reduced installation dimensions thanks to compact valve construction, which does not require inlet and
outlet straight pipelines to stabilize the flow.
Installation procedure
Before installation of
CIM 776
and
Cim 777
, check that inside the valve and the pipes there are no foreign
matters which might damage the tightness of the valve.
Burr pipe connections after having threaded them and distribute the sealing material on pipe threads only
and not on valve threads.
Make sure that required flow rate is within operating range of the valve. Valves may be installed either on
horizontal or vertical pipelines with the electric actuator faced-up and following the arrow direction casted on
the valve body, which shall be the same as the flow one.
For assembly purposes, use a spanner, not a pipe wrench, by applying necessary working torque only on
the valve end nearest the pipe. This helps get a firmer grip and avoids potential damages to valve body.
Make sure that pipe threading length is not longer than valve threads.
The valve is supplied with a cap allowing (when screwed) the manual opening of the valve.
After DPC cartridge removal and manual full opening of the valve, it is possible to flush the system branch
where the valve is installed; when flushing process is over, reposition the DPC control cartridge.
