CEBA - Pressure Regulation System
CEBA can provide accurate pressure control skid, according to norm EN 12186, to regulate the natural gas outlet pressure to a setting value. Pressure regulating unit consists of a train of self actuated or piloted valve, composed by a block valve and monitor fail to close valve that give the double barrier against overpressure as required by the latest version of European code.
The purpose of the block valve is to guarantee a fast shutoff of the gas line when there is the detection of high/low pressure in the piping system through a pilot o remote signal.
The regulating valve gives the full scale (in one step reduction) or the larger range (in two step reduction) of the reduction required. It is in configuration fail to open and it is self operating through a pilot that fill the outlet pressure and, depending from setting point, govern the opening percentage of the regulator. Set point can be adjusted locally in the pilot or, through a transducer, directly from the control room.
Monitor valves is a twin of the regulator and it can make a first reduction step where the pressure reduction is very high and not affordable from one single valves or to be fully open.
The monitor valve assures gas supply continuity in case of failure of the active regulator; the monitor regulator is normally wide open and in the case of malfunction it is closed in order to regulate the pressure.