Bulkheads & Overflows

Bulkheads for Aquarium - Watertight Fittings

Install watertight wall penetrations with our professional bulkheads . Around twenty models are available for all diameters and connection types, compatible with glass and acrylic.

Bulkheads 1/2" - Small Diameters

• Slip x Slip (Smooth x Smooth) : For smooth PVC pipes
• Threaded x Threaded : Lifegard with threads
• Ideal for small penetrations and secondary drains

3/4" Bulkheads - Versatile Use

• Slip x Slip (Smooth x Smooth) : Standard PVC
• Threaded x Threaded : Threaded connections
• Slip x FPT (Smooth x FPT) : Mixed smooth and female threaded
• Versatile for medium-sized drains and returns

Bulkheads 1" - Standard Aquarium

• Slip x Slip (Smooth x Smooth) : Standard PVC
• Threaded x Threaded : Threads on both sides
• FPT x Slip : Female threaded and smooth
• Slip x FPT : Smooth and female threaded
• Threaded with Insert (Lifegard) : With reinforced insert
• Slip with Insert (Lifegard) : Smooth with insert
• Most common size for reef aquariums

Bulkheads 1.5" - High Speed

• Slip x Slip (Smooth x Smooth) : Large diameter PVC
• Threaded x Slip (Threaded x Smooth) : Mixed
• Threaded x Threaded : Double threading
• Slip x FPT (Smooth x FPT) : Smooth and female threaded
• Threaded FPT x FPT (Lifegard) : Double female threaded
• For large aquariums and high flow rates

Bulkheads 2" - Very High Speed

• Slip x Slip (Smooth x Smooth) : Large diameter PVC
• Threaded x Slip (Threaded x Smooth) : Large format mixed
• For very large systems and main overflows

Connection Types

• Slip (Smooth) : For glued PVC pipes
• Threaded : Male screw thread
• FPT (Female Pipe Thread) : Female thread
• With Insert : Reinforced for permanent installations
• Choose according to the type of plumbing used

Bulkhead Installation

• Drill a hole to the exact recommended diameter
• Install sealing gaskets on both sides
• Tighten the clamping nut firmly
• Do not overtighten to avoid cracking.
• Test for leaks before fully filling with water

Bulkhead Applications

• Main overflow box drains
• Emergency and rescue drains
• Water returns from the settling tank
• External plumbing penetrations
• Connections between aquariums
• External filtration systems

Material Compatibility

• Tempered glass (drilling before tempering)
• Acrylic of all thicknesses
• PVC and composite materials
• Gaskets supplied for a perfect seal

Choosing the Right Diameter

• 1/2" - 3/4" : Small aquariums, secondary drains
• 1" : Standard for most aquariums
• 1.5" : Large 100+ gallon aquariums
• 2" : Very large systems 200+ gallons
• Calculate the required flow rate based on volume

Secure delivery throughout Canada. Free delivery available depending on the order amount.

Install professional watertight penetrations with our high-quality bulkheads. Safe installation, guaranteed watertightness, reliable system.