The valve automatically maintains a constant flow rate regardless of fluctuations in upstream and downstream pressure. Any variations, measured by a calibrated diaphragm normally installed downstream of the valve, are transmitted to the differential pilot, which intervenes immediately to precisely regulate the main valve outlet rate. The controlled outlet value can be adjusted by tightening or releasing the pilot adjustment screw. The valve is provided with two pressure outlets (upstream and downstream of the valve) to enable flow rate measurement with a differential manometer (supplied on request) in the absence of a flow meter. This valve is also fitted as standard with a pilot for downstream pressure reduction and stabilization, independently of the flow rate and upstream pressure.
This function is normally implemented in water distribution and/or intake networks with the purpose of ensuring and optimizing both the flow rate and user pressure .

 

 

Available other features on request.