Since horizontal centrifugal pumps are not able to suction from lower levels, self-priming pump are used if utilizing a vertical pump was not an option. Self-priming is a device that is installed at pump’s inlet and makes possible to drain liquid from tanks with no drain valve or wells and pools that are below pump’s level. Standard 12 to 80 liters models are manufactured at Abtin sanat production lines using HDPE materials. Manufacturing larger dimensions is possible to order.