| Interface | Description | 
|---|---|
| IFluidBlock | 
 Implement this interface on Block classes which represent world-placeable Fluids. 
 | 
| IFluidContainerItem | Deprecated
 See  
ItemFluidContainer for a CapabilityProvider implementing the Capability IFluidHandler | 
| IFluidHandler | Deprecated
 Use the Capability version  
IFluidHandler. | 
| IFluidTank | 
 A tank is the unit of interaction with Fluid inventories. 
 | 
| Class | Description | 
|---|---|
| BlockFluidBase | 
 This is a base implementation for Fluid blocks. 
 | 
| BlockFluidClassic | 
 This is a fluid block implementation which emulates vanilla Minecraft fluid behavior. 
 | 
| BlockFluidFinite | 
 This is a cellular-automata based finite fluid block implementation. 
 | 
| DispenseFluidContainer | 
 Fills or drains a fluid container item using a Dispenser. 
 | 
| Fluid | 
 Minecraft Forge Fluid Implementation
 This class is a fluid (liquid or gas) equivalent to "Item." 
 | 
| FluidContainerRegistry | Deprecated
 This will be removed soon. 
 | 
| FluidContainerRegistry.FluidContainerData | 
 Wrapper class for the registry entries. 
 | 
| FluidContainerRegistry.FluidContainerRegisterEvent | |
| FluidEvent | |
| FluidEvent.FluidDrainingEvent | 
 Mods should fire this event when a fluid is  
IFluidTank.drain(int, boolean) from their
 tank. | 
| FluidEvent.FluidFillingEvent | 
 Mods should fire this event when a fluid is  
IFluidTank.fill(FluidStack, boolean)
 their tank implementation. | 
| FluidEvent.FluidMotionEvent | 
 Mods should fire this event when they move fluids around. 
 | 
| FluidEvent.FluidSpilledEvent | 
 Mods should fire this event when a fluid "spills", for example, if a block containing fluid
 is broken. 
 | 
| FluidRegistry | 
 Handles Fluid registrations. 
 | 
| FluidRegistry.FluidRegisterEvent | |
| FluidStack | 
 ItemStack substitute for Fluids. 
 | 
| FluidTank | 
 Reference implementation of  
IFluidTank. | 
| FluidTankInfo | 
 Wrapper class used to encapsulate information about an IFluidTank. 
 | 
| FluidUtil | |
| ItemFluidContainer | Deprecated | 
| TileFluidHandler | Deprecated
 see  
TileFluidHandler | 
| UniversalBucket | 
 A universal bucket that can hold any liquid 
 |