Bulkhead Fittings for IBC Tote Water Tanks
Intermediate Bulk Containers (IBC totes) are widely used for storing and moving water, rainwater, nutrients, chemicals, and irrigation solutions. These durable plastic tanks are commonly used in hydroponics, aquaponics, rainwater collection, and agricultural systems.
To connect plumbing, add drains, or install recirculation systems, bulkhead fittings provide the safest and most reliable way to create leak-proof connections through the tank wall.
This guide explains how bulkhead fittings are used with IBC totes and which sizes work best for common setups.
What Is an IBC Tote?
An IBC tote (Intermediate Bulk Container) is a large plastic tank typically mounted in a metal cage. Most common totes hold 275 or 330 gallons and are made from durable HDPE plastic.
IBC tanks are popular because they are:
• Strong and reusable
• Easy to transport
• Large capacity for water storage
• Ideal for irrigation and hydroponic systems
Because the tank walls are sealed, any plumbing connection must be installed using a tank fitting designed to seal against the wall of the container.
That is where bulkhead fittings come in.
Why Bulkhead Fittings Are Used on IBC Tanks
Bulkhead fittings allow pipes, valves, and plumbing systems to connect through the wall of a tank while maintaining a watertight seal.
A properly installed bulkhead fitting includes:
• A flange that sits inside the tank
• A gasket that seals against the tank wall
• A threaded nut that tightens from the outside
This design compresses the gasket and creates a leak-proof connection without adhesives or sealants on the tank itself.
Bulkhead fittings are commonly used on IBC totes to:
• Add bottom drains
• Install side outlets
• Connect recirculation pumps
• Create overflow drains
• Attach valves or filtration systems
Recommended Bulkhead Sizes for IBC Tanks
The best size depends on how much water flow your system requires.
1" Bulkhead Fittings
Good for smaller drains or low-flow plumbing connections.
Common uses:
• Small irrigation systems
• Utility drains
• Low-flow recirculation lines
1.5" Bulkhead Fittings
A very common size that provides strong water flow without requiring a large hole.
Common uses:
• Hydroponic reservoirs
• Recirculation systems
• Medium-flow tank drains
2" Bulkhead Fittings
Ideal for high-flow drains and fast tank emptying.
Common uses:
• Large irrigation systems
• High-volume water transfer
• Fast drain setups
Many installers choose 1.5" or 2" bulkhead fittings for IBC totes to prevent flow restrictions.
Slip vs Thread Bulkhead Connections
Bulkhead fittings are available with different connection types depending on how you want to attach your plumbing.
Slip (Glue-In) Bulkhead Fittings
Slip fittings allow PVC pipe to be glued directly into the fitting using standard PVC primer and cement.
Advantages:
• Permanent connection
• Strong and reliable seal
• Clean installation
Threaded Bulkhead Fittings
Threaded fittings allow adapters, valves, or threaded pipe fittings to be screwed into the bulkhead.
Advantages:
• Removable connections
• Flexible plumbing options
• Easy to modify later
Installing a Bulkhead Fitting in an IBC Tank
Installing a bulkhead fitting is straightforward and requires only basic tools.
Basic steps:
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Drill the correct hole size using a hole saw.
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Insert the bulkhead fitting from the inside of the tank.
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Place the gasket against the tank wall.
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Tighten the nut on the outside of the tank.
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Connect your plumbing.
Always ensure the gasket sits flat against the tank wall to create a proper seal.
Bulkhead Installation Guide
Correct installation is critical to prevent leaks.
See the step-by-step guide below
Click to view the full installation instructions
Shop Bulkhead Fittings
Bulkhead fittings are available in multiple sizes and connection styles depending on your application.
Explore available options:
Shop by Size
1" Bulkhead Fittings
1.5" Bulkhead Fittings
2" Bulkhead Fittings
Shop by Connection Type
Slip Bulkhead Fittings
Threaded Bulkhead Fittings
Plumbing an IBC Tote Water Tank
IBC totes are commonly used for water storage, irrigation systems, aquaponics setups, and rainwater collection. Bulkhead fittings allow pipes to pass through the tank wall, creating watertight connections for drains, transfer lines, and recirculation plumbing.
A typical IBC tote plumbing setup may include:
• A 2″ bulkhead fitting installed near the bottom of the tank
• PVC piping or hose adapters connected to the outlet
• Valves or unions to control water flow
• Optional overflow or return plumbing
Bulkhead fittings make it easy to convert a standard IBC tote into a functional water tank with reliable plumbing connections.
Installation Tips
• Do not overtighten the bulkhead nut
• Ensure the gasket is installed on the flange side
• Drill clean holes to prevent leaks
• Use proper PVC cement when installing slip connections
With proper installation, bulkhead fittings can provide long-term leak-proof plumbing connections for IBC tanks, reservoirs, and water storage systems.
FAQ's
Can you install a bulkhead fitting in an IBC tote?
Yes. Bulkhead fittings are commonly used to add drains, plumbing connections, transfer lines, or recirculation systems to IBC tanks. A properly sized hole is drilled in the tote wall and the bulkhead fitting is installed with the gasket on the flange side inside the tank to create a reliable watertight seal.
What size bulkhead fitting is best for an IBC tote?
Many installations use 1.5″ or 2″ bulkhead fittings to allow strong water flow and prevent restrictions. A 2″ bulkhead fitting is especially common for tank drains, irrigation systems, aquaponics, and water transfer plumbing because it allows higher flow rates.
Do bulkhead fittings seal on curved tank walls?
Most IBC totes have relatively flat areas where fittings can seal properly. The EPDM gasket compresses against the tank wall to create a watertight seal. If the surface is slightly curved, tightening the nut evenly will usually allow the gasket to conform and seal correctly.
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