Surge - Anticipating valves (Dorot models RE and RE/EL): Comparison to Air Vessel as surge- preventing means in pumping systems

摘要

This article describes how the changes of flow velocity, how these changes can create problems in a network and how these challenges can be solved by using the right valves. Any change of water flow velocity creates pressure oscillation in the network, called 'Surges' or 'Water Hammer', when the kinetic energy of the water mass is converted to pressure. The surges are, normally, an array of alternating pressure waves, that are higher and lower than normal conditions. High pressure surges may rupture the pipe, and/or damage various accessories (check valves, meters, air valves, etc.).