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The sequence valve are used to assure that a secondary circuit is pressurized when the setting pressure is reached.
These valves grant a minimum variation of the setting pressure with a changing flow up to 40 l/min (see diagram).
Three spring types allow adjustment within the range 7 ÷ 250 bar. Manual adjustment is available by a grub screw or plastic knob.
The cartridge used is the “CVS” type.

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