Whatever pipe mod you are using likely needs to be told to extract from the sink. With mechanism it would be the configurator -- if i recall it would be two right click with the configurator on the extract side. Answer from Lord_Peppe on reddit.com
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Feed The Beast Wiki
ftb.fandom.com › wiki › Electrolytic_Separator
Electrolytic Separator - Official Feed The Beast Wiki
The Electrolytic Separator is a block added by Mekanism. It is used to separate fluids into their component elements. ... The Electrolytic Separator (middle) decomposes water, delivered by an Electric Pump on the right, into hydrogen and oxygen.
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Reddit
reddit.com › r/mekanism › electrolytic separator not inputting water (1.19.2)
r/Mekanism on Reddit: Electrolytic Separator not inputting water (1.19.2)
July 2, 2023 -

G'day, recently started doing a run with Mekanism, Create, and the Thermal mods alongside a space travel mod. I've been going through Mekanism by following the advancement screen, yet I've hit a speed bump with the Electrolytic Separator. I have an active pump, plenty of electricity, yet water doesn't seem to enter the machine. It's powered just fine, but won't do anything else.

Bit annoying, considering it's basically what I need to progress the mod, right?
I'm in 1.19.2, if anyone had a solution I'd appreciate it.

Cheers.

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Reddit
reddit.com › r/allthemods › electrolytic separator output sides.
r/allthemods on Reddit: Electrolytic separator output sides.
November 24, 2016 - Either the Electrolytic Separator (ES) is auto-ejecting into the GG, or else the GG is 'pulling' from the ES. I believe Mek has some quirks/bugs as related to gases and certain machines. I believe most/all of these can be solved by using Mek gas tanks (instead of pipes) directly on the machine. ... Did you set the pressurized pipe to extract with the Configurator from that side? My experience thus far with Mekanism is that fluid machines never auto-eject.
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GitHub
github.com › mekanism › Mekanism › issues › 7845
Electrolytic Separator won't accept heavy water. · Issue #7845 · mekanism/Mekanism
August 16, 2023 - Issue description I'm trying to make deuterium for my fission reactor, but my electorlytic separator will not accept the heavy water I need to pump into it in order to create it. Steps to reproduce Pump out heavy water into a tank Try to...
Author   mekanism
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GitHub
github.com › mekanism › Mekanism › issues › 7926
Electrolytic Seperator cannot accept water · Issue #7926 · mekanism/Mekanism
November 14, 2023 - Issue description The electrolytic separator cannot accept water in order to produce hydrogen and oxygen. Steps to reproduce While in ATM 9 Pack was trying to pipe water from a sink (used both Pipez and Xnet) into an electrolytic separat...
Author   mekanism
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Stack Exchange
gaming.stackexchange.com › questions › 290854 › emptying-an-electrolytic-separator-in-mekanism
minecraft java edition minecraft feed the beast - Emptying an electrolytic separator in mekanism? - Arqade
November 10, 2016 - 1) You can use an item called the configurator to set inputs and outputs on the gas pipes. 2) You can move the separator to be touching the elite factory, eliminating the need for a pipe.
Find elsewhere
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CleanroomMC
cleanroommc.com › groovy-script › mods › mekanism › electrolytic_separator
Electrolytic Separator | Mekanism | CleanroomMC
mods.mekanism.electrolytic_separator.add(fluid('lava') * 10, gas('cleanGold') * 5, gas('cleanCopper') * 3, 3000) Just like other recipe types, the Electrolytic Separator also uses a recipe builder. Don't know what a builder is? Check the builder info page out. ... Create the Recipe Builder. ... FluidStackList. Sets the fluid inputs of the recipe.
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YouTube
youtube.com › watch
Mekanism: Electrolytic Separator (how to get hydrogen + More) - YouTube
AboutPressCopyrightContact usCreatorsAdvertiseDevelopersTermsPrivacyPolicy & SafetyHow YouTube worksTest new featuresNFL Sunday Ticket · © 2026 Google LLC
Published   December 25, 2022
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CraftTweaker
docs.blamejared.com › 1.12 › en › Mods › Mekanism › Electrolytic_Separator
Electrolytic Separator - CraftTweaker Documentation
As of Mekanism 9.7.0 it is now possible to view all recipe strings of the Electrolytic Separator through the command /ct mekrecipes separator ... mods.mekanism.separator.addRecipe(ILiquidStack inputFluid, double inputRF, IGasStack outputGas1, IGasStack outputGas2);
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Reddit
reddit.com › r/feedthebeast › mekanism v9 electrolytic separator problem
r/feedthebeast on Reddit: Mekanism V9 Electrolytic separator problem
June 16, 2016 -

Ok, I'm discovering the mod for the first time and followed a tutorial, but for the part where we need a tube or conduit for gas to get out of the Electrolytic Separator (I want Oxygen in my Purification chamber), none of tubes connect to the machine, I even tried from the bottom, from the top, nothing, I then switched to EnderIO Gas Conduits, they seem to connect fine but do not output anything to anywhere, even to a basic gas tank, I even tried putting the basic gas tank directly next to the Electrolytic separator without any results of any kind, nothing wants to go out of there, there's no interface on the electrolytic separator to configure what goes in and out and where it should go either. Did I forget something. I'm using a customized version of FTB IE in Normal Mode.

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YouTube
youtube.com › zl
Mekanism in 60 Seconds: Electrolytic Separator - YouTube
Create Hydrogen (and other gases) using the Electrolytic Separator from Mekanism (Modded Minecraft/FTB) -- it won't take a minute!Hate long boring tutorials?...
Published   December 2, 2020
Views   71K
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GitHub
github.com › aidancbrady › Mekanism › issues › 2575
Electrolyctic Separator not working · Issue #2575 · mekanism/Mekanism
April 22, 2015 - Hi! First of all, i love your mod. Second, when i place down an Electrolyctic Separator, water pumping in through the top and power from the back, it doesnt work. No Hydrogen or Oxygen appears inside the GUI. I know what you are thinking...
Author   mekanism
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Website-files
assets-global.website-files.com › 6723ccedf35533ce53ad68e3 › 68175155f7a8aada9ade71db_26662165094.pdf pdf
Electrolytic seperator guide
Additionally, the actual energy gained per tick is capped by the turbine's energy storage. The Electrolytic Separator is a crucial machine in the Mekanism mod, used to separate fluids into two · gases through electrolysis. Its design features three internal tanks: one for input liquid and two ...
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Minecraft Forum
minecraftforum.net › home › minecraft forum › mapping and modding: java edition › minecraft mods › mods discussion › mekanism mod help!
Mekanism Mod Help! - Mods Discussion - Minecraft Mods - Mapping and Modding: Java Edition - Minecraft Forum - Minecraft Forum
November 10, 2016 - I understand I can use water buckets, but I have to do that manually. I tried using an electric pump by setting it on water surface and even tried 1 block above water surface. It say says "No fluid". I need a system that powers the pump, and connects the pump to the Electrolytic Separator.
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YouTube
youtube.com › watch
HOW THE ELECTROLYTIC SEPARATOR WORKS IN MEKANISM - YouTube
Learn how the Electrolytic Separator works in Mekanism. Learn step-by-step how to use items, obtain materials, and master the Mekanism mod in Minecraft. Opti...
Published   September 8, 2025
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Reddit
reddit.com › r/allthemods › my electrolytic separator will not accept water
r/allthemods on Reddit: My electrolytic separator will not accept water
October 8, 2023 -

as title says, I have used Mekanism a lot and I have no clue what is wrong, I've checked Redstone signal, piping flow and input, nothing seems to work to get it to take water I have even tried putting water in manually and it just spits it back into my hand im playing ATM9 btw

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Voltz Wiki
voltzwiki.com › wiki › Hydrogen_Generator
Hydrogen Generator - Official Voltz Wiki
Now check to make sure that the Electrolytic Separator is filled with energy. Attach a "Water Pipe" to the edge, by Shift+Right Clicking. Attach a Pump to the pipe in that orientation. Attach more wire to the Hydrogen Generator as shown, and connect it to an Advanced Battery Box.
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GitHub
github.com › mekanism › Mekanism › issues › 4852
[1.12] Electrolytic Separator + Energy Upgrades = Hydrogen Power · Issue #4852 · mekanism/Mekanism
December 7, 2017 - Stick a full set of Energy Upgrades in the Electrolytic Separator. Supply Water · Burn Hydrogen in a Gas-Burning Generator for 10x the power you put in. A full set of Speed Upgrades will net you nearly 18k J/t. Forge: 14.23.1.2561 Mekanism: 9.4.2.327 · Test pack included Mek Generators and Tools, and JEI 4.8.5.134.
Author   mekanism