Malleable Cast Iron Tees for Marine Piping Systems

These malleable cast iron tees are engineered for dependable performance in maritime piping systems. Manufactured to meet the demanding conditions of shipboard service, they provide a secure and leak-resistant connection for branch lines, manifolds, and distribution networks. Ideal for use on cargo vessels, tankers, offshore platforms, and inland waterway craft, these fittings are an essential component in any ship's piping inventory.

Available in both black and hot-dipped galvanized finishes, these tees offer excellent resistance to corrosion and mechanical stress. Each fitting features precision-cut NPT threads for a tight, reliable seal with standard threaded pipe. Whether you're working on a steam line, compressed air system, or cooling water circuit, our malleable cast iron tees deliver the strength and durability required for long-term operation in harsh marine environments.

Key Features

Technical Specifications

MaterialMalleable cast iron (ASTM A197)
Thread StandardASME B1.20.1 NPT
Pressure Rating150 psi (depending on size and temperature)
Temperature Range-20°F to 150°F
Sizes1/8" to 2" NPT
FinishBlack or hot-dipped galvanized
StandardsASME B16.3
ApplicationsShipboard water, oil, air, steam lines; general marine piping

Frequently Asked Questions

What pressure rating do these malleable cast iron tees have?

These tees are rated for up to 150 psi at 150°F, making them suitable for low- to medium-pressure marine piping systems.

Are they suitable for seawater applications?

While galvanized versions offer improved corrosion resistance, malleable iron is generally recommended for air, steam, and fresh water systems. For seawater, consider non-ferrous or stainless steel fittings.

What sizes are available?

We offer a comprehensive range from 1/8" to 2" national pipe thread (NPT) sizes to fit most shipboard piping.

Can I get them in galvanized finishes?

Yes, all sizes are available in both black and hot-dipped galvanized finishes to meet different corrosion protection requirements.

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