International Commission on Irrigation & Drainage Commission Interationale des Irrigation et du Drainage



(2719) Conduit regulator, Surge tank, or Surge chamber
A tank with a free water surface provided at the transition from tunnel or pipeline to penstock to protect the tunnel or pipeline from excessive changes in pressure, particularly the rise in pressure that expeditiously maintains equilibrium in the system by storing or allowing water required for the above purpose. Note - Strictly speaking, `surge tank` or `surge chamber` is that vertical portion of the conduit regulator which maintains free water surface but in general usage, `surge tank` or `surge chamber` is referred to as a `conduit regulator`.

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