Simple Fluid Tanks Mod for Minecraft 1.12.1/1.11.2

Simple Fluid Tanks Mod 1.12.1/1.11.2 allows you to store fluids in an expandable multiblock structures. It is best used in conjunction with other, usually tech related mods like Thermal Expansion or LiquidXP.


  • No fixed layout. Build in almost any size and shape you want.
  • Compatible with mods that support the Forge Fluid API (Thermal Expansion 3, LiquidXP and many more).
  • Supports BuildCraft compatible wrenches.
    • Add more capacity when needed, by placing additional tank blocks and using a wrench on the valve.
    • Remove tank blocks without destroying the multiblock structure by sneak-rightclicking with a wrench.
  • The valve block emits a redstone signal in conjunction with a comparator. The more fluid is contained in the multiblock structure, the stronger the signal.



  • Download and install Forge
  • Download the mod and place the jar in your mods folder
  • After starting minecraft once, you’ll find the simplefluidtanks.cfg in your config folder. Here you can change block ids and a few other things.


The recipes are different depending on whether Thermal Expansion 3 is installed or not.

Without Thermal Expansion

Fluid Tank (glass, iron ingots)

Valve (slimeballs, iron ingots, fluid tank)

With Thermal Expansion

Fluid Tank (hardened glass, tinkers alloy ingots)

Valve (slimeballs, tinkers alloy ingots, fluid tank)


The multiblock structure

To build a functional tank you start by placing as many fluid tank blocks as you want. The only important thing to note here, is that placing them diagonally won’t work. They have to be directly adjacent to at least one other fluid tank. When you try it yourself, you’ll probably notice that they’re not rendered as full blocks. That’s to indicate that they’re not yet part of a multiblock tank. To complete the multiblock structure you simply place a valve block directly adjacent to one of the fluid tanks. You’ll notice that the fluid tanks are now full block size and all connected (see screenshots below).


Every fluid tank has by default a capacity of 16 buckets. Concerning the total capacity the valve counts also as a tank block. To increase the capacity of a multiblock tank, place more fluid tanks and when you’re done rightclick the valve with a BuildCraft compatible wrench. To remove fluid tanks from the structure sneak rightclick them with a wrench. If there’s not enough capacity left to store all the fluid after removing a tank, the excess fluid will be lost.

The valve

There can be only one valve per multiblock structure. Putting fluid into a tank or getting it out can only be done via the valve. To do so, either use buckets or transportation methods added by other mods that use Forge’s Fluid API (e.g. fluiducts from Thermal Expansion). To get an indication how full the tank is, or for automation purposes, you can place a comparator next to a valve. It works exactly like it does with chests. The fuller the tank, the stronger the emitted signal.


Unliked tank blocks

A completed multiblock tank

A multiblock tank with water in it

Pumping water from one tank to another with Thermal Expansions fluiducts

Two separate tanks placed directly adjacent to one another


  • Will there be a an update for 1.7 and when will it be released?
  • Most likely yes but no ETA on the release. Forge needs to iron out some things and none of the big mods have been ported to 1.7 yet anyways.
  • Can you add some sort of upgrades please? I want to store stupid amounts of fluid in as little blocks as possible!
  • Not gonna happen. Need more storage? Build a bigger, or more tanks. If you don’t care about balance edit the config.
  • Can I put your mod in a modpack?
  • Yes. But I won’t do any tech support for it.
  • There are already several mods with fluid tanks around, why make another one?
  • Because every mod I tried, worked slightly different from how I wanted it to work. So I decided to make my own.
  • I don’t really like this mod. Are there any alternatives?
  • That’s perfectly fine. I’d recommend checking out Dynamic Liquid Tanks and OpenBlocks.

Simple Fluid Tanks Mod Download Links:

File Name Status Game Version Date
simplefluidtanks-1.12.2- Release 1.12.2 May 16, 2018
simplefluidtanks-1.12.1- Release 1.12.1 Sep 23, 2017
simplefluidtanks-1.11.2- Release 1.11.2 Jun 16, 2017
simplefluidtanks-1.8.9- Release 1.8.9 May 15, 2016
simplefluidtanks-1.7.10- Release 1.7.10 Dec 2, 2014
simplefluidtanks-1.7.2- Release 1.7.2 Jul 24, 2014
simplefluidtanks-1.6.4- Release 1.6.4 Jun 2, 2014

Author: Zarathul

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