Abstract: The disclosure relates to a swimming pool drain chamber which is positioned over an outlet of a swimming pool. The chamber includes sealing means for effecting a liquid seal adjacent the outlet. An upper portion of the chamber extends above the normal water surface of the swimming pool. The water in a line connected to the outlet can be removed without lowering the water level in the entire pool to an elevation below the outlet. In a preferred embodiment, the chamber extends below the outlet to facilitate draining the line completely and also to keep small amounts of water entering the chamber out of this line.