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This gradual pressure increase, or “soft start” prevents shocks to the system which can occur when full working pressure is immediately introduced, thus saving waer and preventing injury to users or components.
Each cylinder thus protected gradually returns to the position it stopped in when the system was vented.
Types 7860/1 are mounted on the F.R.L. outlet. These versions protect the whole downstream installation. All cylinders downstream of the soft start fitting pressurise simultaneously when the system is
pressurised after an emergency stop. They return to their end-of-stoke position one after the other depending on their resistive forces.
Types 7870/1 are mounted to the supply port of the control valve or the common supply line of several associated valves. Therefore the action of the fitting is immediate and controls directly the designated
cylinders. Thus the pressurisation speed of the control valve, or group of valves, can be adjusted to an optimum.
Technical Specifications
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Working Pressure
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3 to 10 bar
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Working Temperature
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-15° to +60°C
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