Malleable Cast Iron Reducing Tees – Marine & Industrial Pipe Fittings

Upgrade your shipboard piping system with our high-quality malleable cast iron reducing tees. Designed for reliable performance in marine and industrial applications, these fittings connect three pipes while transitioning from a larger diameter run to a smaller branch line. Ideal for fuel lines, cooling water, and general service piping, they deliver leak-proof joints and long service life.

Our malleable iron tees feature precision-cut NPT threads for secure installation and are available in a range of reducing sizes. Manufactured to industry standards, they withstand high pressure and temperature conditions commonly encountered in engine rooms and deck systems. Choose from black or galvanized finish to suit your corrosion-resistance requirements.

Key Features

Technical Specifications

MaterialMalleable Cast Iron
Connection TypeThreaded (NPT)
Size Range1/2" to 2" (reducing combinations)
Pressure RatingUp to 300 psi WOG (non-shock)
Temperature Range-20°F to 400°F
StandardsASTM A197, ANSI B16.3
FinishesBlack or Galvanized
ApplicationsMarine piping, cooling water, fuel lines

Frequently Asked Questions

What is a reducing tee used for?

A reducing tee is a fitting that allows for a branch pipe of a smaller diameter to connect to a main line. It is commonly used in ship piping systems to step down flow to smaller equipment or distribution lines.

Are these fittings suitable for seawater service?

Galvanized malleable iron tees provide improved corrosion resistance and can be used in seawater systems with proper maintenance. For high salinity or aggressive corrosive environments, bronze or other non-ferrous fittings may be recommended.

What is the maximum pressure rating?

Our malleable cast iron reducing tees are rated up to 300 psi WOG (water, oil, gas). Always confirm system pressure and temperature conditions before installation.

Do you stock non-standard size reductions?

Yes, we carry a wide range of reducing combinations for most marine pipe standards. Contact us with your specific requirements for availability and lead times.

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