The 
Electric Pump is a Mekanism machine that picks up source blocks of any fluid from the world, like Water or Lava. To use it you’ll place it directly above the fluid, give it power through its back, and take the fluid out of the top, which is the only face it will come out of.
With no upgrades it pumps 1 bucket every 19 ticks for 40 FE/t (100 J/t), and it’ll reach source blocks up to 80 blocks away as long as they’re connected. A single Water source under it will never run dry, so most pumps only ever need the one block of Water.
How to Make It
You’ll need a 
Steel Casing in the middle with an 
Infused Alloy on either side of it. A 
Bucket goes above the casing and 3 
Osmium Ingots fill the bottom row, so it’s one of the first machines you’re able to make after Steel.
The same viewer has the 
Fluidic Plenisher and the 
Filter Upgrade, which are both covered further down. The plenisher uses a whole Electric Pump in its recipe, so you’ll want to make a second pump if you’re building one.
How It Works
The Electric Pump always starts with the block directly below it, so that block needs to be a source block. From there it spreads out through any source blocks that touch, in every direction, until it runs out or reaches 80 blocks from the pump. Flowing fluid is ignored, as it’ll only take sources.
The pump pushes its fluid into whatever is on top of it, and it won’t give fluid to a pipe on any other side. Put a Mechanical Pipe, a Fluid Tank or the machine you’re feeding directly above it, and connect power to the back.
There’s a 10 bucket tank inside, and the pump will stop when there isn’t room in it for the next bucket. It pushes up to 256 mB a tick out of the top by itself, so you won’t need to set a Mechanical Pipe to pull. It holds 16,000 FE and only uses power while it’s pumping.
Infinite Water, but not Lava
When the pump takes Water, it leaves the source block where it is, as long as the world’s waterSourceConversion game rule is on, which it is by default. So one bucket of Water in a hole under the pump is enough for everything, and you don’t need an ocean or an infinite pool.
Lava is different, as the matching rule for Lava is off by default, which means every Lava source will be removed as it’s pumped. A Lava lake in the Nether will last a long time with an 80 block reach, but it will run out. The range and this behavior are both config options, which are listed on the Config and Mod Compatibility page.
When it stops finding fluid
A pump remembers the fluid it started on, and it won’t switch to a different one by itself. If you move it or change what’s under it, sneak and right-click it with a 
Configurator, which shows “Reset Electric Pump calculation” and makes it search again from the block below.
Speed and Energy
The pump takes Speed and 
Energy Upgrades as well as the Filter Upgrade. 
Speed Upgrades shorten the time for each bucket, and they also raise how much it’s able to push out of the top, so the output never holds it back.
| Speed Upgrades | Time per Bucket | Pumped | Energy |
|---|---|---|---|
| 0 | 19 ticks | 52 mB/t | 40 FE/t |
| 2 | 10 ticks | 100 mB/t | 127 FE/t |
| 4 | 6 ticks | 166 mB/t | 400 FE/t |
| 6 | 3 ticks | 333 mB/t | 1,265 FE/t |
| 8 | 1 tick | 1,000 mB/t | 4,000 FE/t |
Energy Upgrades bring that cost back down, and a full set of 8 divides it by 10, so a pump with 8 of each runs at 400 FE/t for a bucket every tick. One pump with no upgrades is enough for an 
Electrolytic Separator, whereas a tall Thermal Evaporation Plant will want several fast ones.
Heavy Water and the Filter Upgrade
The Filter Upgrade only fits the Electric Pump, and only one can be installed. It’s crafted from a 
Tin Dust with an Infused Alloy on either side and 
Glass above and below. With it in, a pump over Water will give 10 mB of Heavy Water for each operation, instead of a bucket of Water.
That’s slow, at about half a mB a tick with no Speed Upgrades and 10 mB a tick with 8 of them. Other fluids aren’t changed by the filter, so it’s only useful over Water. Heavy Water has no chemical form and one use, which is making Deuterium in an Electrolytic Separator for the Fusion Reactor.
You’re able to carry it in a 
Heavy Water Bucket once a tank has 1,000 mB, but a line of filtered pumps feeding separators directly is how it’s normally used. Each pump still only needs its one Water source underneath.
Fluidic Plenisher
The Fluidic Plenisher is the pump in reverse, as it places a fluid into the world as source blocks. It’s crafted from an Electric Pump with a 
Basic Control Circuit on either side and 3 
Tin Ingots above and below, and fluid is piped into its top.
It starts with the block under it and then fills outward and downward, never upward, placing 1 bucket every 20 ticks for 40 FE/t. It’ll stop after 4,000 blocks, and once an area is full it keeps the block below it topped up. A Configurator will reset it the same way as the pump, and it takes Speed and Energy Upgrades.
Upgrades and Automation
The Electric Pump works with every redstone control mode, and a Comparator next to it will read how full its tank is. The slots in its screen take a Bucket as well, so you’re able to fill Buckets by hand from the tank without any pipes.
For a base’s water supply, one pump under a Fluid Tank or a pipe is all it takes. The first thing most players pump for in bulk is Brine, so the Thermal Evaporation Plant is the page to read next.
FAQ
Place it directly above a source block of the fluid, connect power to its back, and put a pipe or tank on top of it. The fluid will only come out of the top face, and it’s pushed out by the pump, so nothing else needs setting up.
The block right under it has to be a source block, as it won’t take flowing fluid. It also stops when its 10 bucket tank is full, so check that something on top is taking the fluid away, and sneak and right-click it with a Configurator if you’ve moved the fluid.
Water sources are left in place while the waterSourceConversion game rule is on, which is the default, so one source block lasts forever. Lava sources are removed as they’re pumped, as that rule is off for Lava unless it’s been changed.
Put a Filter Upgrade in an Electric Pump that’s sitting over Water, and it’ll give 10 mB of Heavy Water for each operation instead of Water. Speed Upgrades help a lot here, as 8 of them bring it up to 10 mB a tick.
