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Pressure control is essential in systems that work with pumped water. 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