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Anvil malleable iron Class 300 tee with three FNPT ends

Anvil

Anvil 310517404 3" FNPT Malleable Iron Class 300 Tee

SKU CH-773S-KS1SS

A malleable iron Class 300 tee with three 3-inch FNPT connections rated for 1,000 psi at 150 °F

  • Three-way flow control with three 3-inch FNPT ports
  • Class 300 malleable iron rated for 1,000 psi at 150°F
  • Schedule 80 compatibility for heavy-duty piping systems
  • Female NPT threads on all ends ensure secure connections
  • New Anvil tee built for high-pressure industrial applications

3″ Class 300 Malleable Iron Tee

This Anvil tee provides a three-way Female NPT junction for 3 inch Schedule 80 piping. It is rated for 1,000 psi at 150 degrees F, making it suitable for high-pressure fluid or gas distribution in industrial and commercial installations.

Upgrading from lower-class fittings

When a system moves from Class 150 to Class 300 requirements, this fitting replaces the lighter tee without changing pipe layout. The jump is worth it when operating pressures approach 1,000 psi or when code mandates the higher pressure class for safety compliance.

Integrating into a piping system

The tee threads directly onto 3 inch male NPT pipe ends using standard thread sealant or tape. Its malleable iron construction handles thermal cycling and mechanical vibration, freeing the designer from specifying more expensive forged steel in many non-critical service applications.

Highlights

  • Three-way flow control with three 3-inch FNPT ports
  • Class 300 malleable iron rated for 1,000 psi at 150°F
  • Schedule 80 compatibility for heavy-duty piping systems
  • Female NPT threads on all ends ensure secure connections
  • New Anvil tee built for high-pressure industrial applications

Specifications

BrandANVIL

Questions about this item

What pipe size and thread type does the 3-inch Class 300 tee accept?

The tee has three 3-inch female NPT openings for Schedule 80 pipe.

How do I install the malleable iron tee without cracking it?

Apply PTFE tape or pipe dope to the male threads, hand-tighten, then turn one to two full turns with a pipe wrench; over-tightening cracks the iron.

When should I replace the Class 300 tee?

Replace it if you see cracks, heavy corrosion, or leakage at the threads, especially after exposure near the 1,000 psi at 150 °F rating.

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