Tank Bulkhead ¾”

DN20 3/4″ Tank Bulkhead Fitting

DN20 (3/4″) Tank Bulkhead Fitting – Leak-Proof Port Connector for Water Storage

The DN20 (3/4″) Tank Bulkhead Fitting is an essential component for modifying or building water storage systems. This robust connector is designed to be securely fitted through the wall of any tank, barrel, or reservoir, creating a reliable, watertight, threaded port. The fitting is constructed from heavy-duty, corrosion-resistant plastic, ensuring long-term durability when exposed to water and various chemicals. The multi-piece design consists of a central body and two large hexagonal nuts that sandwich the tank wall, creating a powerful compression seal. The large hexagonal structure allows for easy hand-tightening or use with a wrench. The internal threading is compatible with standard 3/4-inch pipe fittings, enabling the easy attachment of valves, spigots, pipes, or drain systems.

Key Benefits

• Watertight Seal: Compression design with sealing washers (implied) creates a reliable, leak-proof connection through tank walls.
• Corrosion Resistant: Durable plastic construction is ideal for water, chemical, and outdoor use.
• Standard Compatibility: DN20 size corresponds to the widely used 3/4-inch pipe threading for easy valve integration.
• Easy Installation: Hexagonal body and nuts allow for quick, tool-assisted installation and secure tightening.
• Versatile Application: Creates an entry or exit port anywhere on a tank wall, not just at the base.

Technical Specifications

• Part Number: (Specific to the DN20 model)
• Nominal Diameter: DN20 (Approx. 3/4 Inch)
• Material: High-Strength, Corrosion-Resistant Plastic (e.g., PVC or PE)
• Connection Type: Threaded Female Port
• Feature: Bulkhead/Tank Connector, Hexagonal Nuts
• Grade: Residential/Agricultural/Industrial

Perfect For

• Installing drain or valve ports in plastic or fiberglass water storage tanks.
• Creating overflow ports or access points in large drums or IBC containers.
• Rainwater collection systems where a spigot needs to be mounted.
• Connecting piping to the exterior of hydroponic and aquaculture reservoirs.
• Any application requiring a secure, liquid-tight connection through a wall.

Application Instructions

• Hole Preparation: Drill a clean, precise hole in the tank wall that is sized correctly for the fitting body.
• Insert Body: Insert the threaded body of the fitting through the hole from the inside (ensure any sealing gasket is in place).
• Secure Nut: Thread the large hexagonal nut onto the exposed threads on the outside of the tank wall.
• Tighten: Hand-tighten the nut until snug, then use a wrench to tighten just enough to create a watertight seal, avoiding overtightening which can damage the tank.
• Final Connection: Attach the desired pipe fitting, valve, or spigot to the threaded port.

Pro Tips

• Always use a fresh, sharp hole saw to drill the tank opening to prevent plastic splintering.
• Apply a small amount of pipe thread sealant (PTFE tape or liquid) to the threads before attaching any valve or pipe for a guaranteed seal.
• If only one hexagonal nut is provided (as sometimes the inside nut is part of the body), ensure a rubber gasket is used on both the inside and outside of the tank wall.
• Avoid installing in areas that will be subjected to excessive stress or movement.

Keywords: Tank bulkhead fitting, DN20 connector, 3/4 inch tank port, plastic bulkhead, water tank adapter, rainwater harvesting fitting, hexagonal tank connector, leak-proof port, plumbing hardware, hardwarett.com