Screw pumps can pull water through a grate, floor bars, or a constructed fortification on the Z-level below. The adjacent space cannot be a floor, stairway or wall suspended over water. The source of the pump must be directionally adjacent to "Open Space" that is directly above a source of liquid.The screw pump will draw the liquid up from below its level, and distribute it out of the other side of the pump. Having specified the direction of travel, you must ensure that the source side of the pump is placed adjacent to and above (in the z-axis) a liquid. Orientation of a pump cannot be changed after being constructed, but, as with any building, it can be deconstructed into its component parts and rebuilt as and where desired. The orientation is visible after placement by using query over or near that pump or during placement, using UMKH to select the direction of input. If pumped manually, the dwarf stands on the light-colored tile, as the dark-colored is impassable. The example shown in the infobox above "pumps from the north" (top) to the south (bottom). (Although the "liquid" is shown as blue, this can work for magma as well, with the appropriate precautions.) If pumped manually, the pump operator stands in the light-colored area, as the dark-colored is impassable to both fluid and movement. Note that the entire space required is 4 tiles long by 1 tile wide, not including any retaining walls for the outflow. The area to the right may fill to the top of that level, but no more (See pressure see Pump stack). This pump "pumps from the west", from left to right.
The light green X must be next to the liquid source and the dark green X is where the liquid exits the pump. The default (as shown above in the sidebar), "pumps from the north" (top). This is determined before placement with the u, m, k, or h keys, and the text at the top of the sub-menu will change to confirm your choice. It's important to choose the proper orientation for your pump, where it will draw water from and where it will deliver the water. This could be carpentry, metalsmithing, or masonry, depending on the material of the block. Then a dwarf (the same or a different one) with the appropriate labor must complete the building. First a dwarf with the architect labor must design it. The construction itself is completed in two stages. As with desalination, this only works if the cistern has never contained stagnant water.įor a basic overview of how the different machine parts work and work together, see machinery.īuilding a screw pump requires an enormous corkscrew, a block, and a pipe section. Stagnant water pumped through a pump will become clean, letting dwarves drink it without getting an unhappy thought and letting doctors clean wounds without causing an infection. Salt water pumped through a pump will desalinate and become drinkable, but only if the cistern has never contained salty water. (* A DF pump can best be imagined as a simple archimedes screw.) Pumped fluids will have a pressure equal to the exit z-level - a pump never "forces" water to a higher z-level than the output tile. Pumped fluids can and will flow immediately after being pumped, as normal for that fluid.
The "rise" in levels occurs on the first tile, the intake side, from one level below up to the level of the pump*. Pumping only occurs in a straight line, and involves a total of 4 tiles in a row - the liquid source, two for the pump, and the output. The direction you want the fluid to travel must be chosen at the time of construction. It is two tiles by one tile in size, and it can be either manually operated by a dwarf with the pump operator job or by being powered by water wheels and/or windmills. A screw pump is a small building that can lift liquids ( water or magma) from one level below onto the same Z-level as the pump.
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