The PS - Pressure-sustaining Valve maintains a steady, predetermined pressure in the network, upstream of its location. If the pressure falls below the set-pressure, the valve closes drip tight.
The PR – Pressure-Reducing Valve maintains stable downstream pressure, preventing over-pressurization, pipe damage, water hammer, and uneven flow. It opens when pressure drops below the set level, minimizing losses and ensuring efficiency.
The FR – Flow Regulation Valve controls flow rate, preventing over-delivery, reducing water hammer, and optimizing distribution. It maintains a set flow and opens when demand drops, minimizing losses and ensuring efficiency.