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Pressure control is essential in systems that work with pumped water. Emiltec offers a wide range of valves that can be conceptually divided into 3 different families.
By-pass valves
They allow to adjust the working pressure of the system. When the delivery line is closed, the water is diverted to the bypass and the pump works in low pressure.
Typical applications: systems whose conditions of use include frequent opening and closing of the delivery line with long periods in bypass mode.
Pressure regulating valves
They allow to regulate the working pressure of the system but, unlike the by-pass valves, when the delivery line is closed, the pump continues to work in high pressure. Thet are also available in the pneumatic control version (VRPP) for remote adjustment of the working pressure.
Typical applications: systems with multiple users powered by the same pump/valve or systems that do not provide for the closure of the delivery line.
Relief valves
They protect the system from possible harmful overpressures. When the regulating pressure is exceeded, they discharge part of the water in by-pass, thus obtaining a pressure drop in the system. During the standard operation of the system they normally remain closed.