The latrine pan includes a collection basin and a flapper. The collection basin has an upper bowl portion tapering from an upper rim having an outer surface to an outlet 5 extending through a wall of the collection basin at a lower portion of the collection basin. The flapper includes a counterbalance device and a coverplate disposed on opposite sides of a pivot and the counterbalance device has a plurality of counterweight arms. The coverplate has an upper face adapted to cover the outlet of the collection basin when the upper face is engaged against the lower portion of the collection basin. The flapper is pivotally mounted 10 against the collection basin such that the coverplate engages against the lower portion of the collection basin when a pivotal force attributable to the counterbalance device is substantially equal to or slightly greater than a pivotal force attributable the coverplate.
展开▼
