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Anvil malleable iron pipe union Class 300 3/8 NPT female threads

Anvil

Anvil 0312822646 Class 300 Malleable Iron Union 3/8 in NPT

SKU CH-KX3K-0PS0N

Malleable iron union rated Class 300 for Schedule 80 pipe with 3/8 in NPT female threads and 2,000 psi maximum operating pressure at 150 degrees F

  • Class 300 rating supports 2 000 psi working pressure
  • Malleable iron body resists cracking under stress
  • Female NPT threads seal directly to Schedule 80 pipe
  • Rated for service up to 150 °F

Anvil Class 300 Malleable Iron Union

This Anvil union connects two sections of 3/8 inch NPT female-threaded pipe. It is rated for Schedule 80 piping systems and suits installers who need a separable joint in high-pressure water, steam or gas lines. The malleable iron body provides mechanical strength for demanding industrial and commercial plumbing applications. Buyers requiring a welded or flanged connection will need a different fitting type.

Pressure rating and service temperature

The fitting withstands 2,000 psi at a maximum operating temperature of 150 degrees Fahrenheit. Malleable iron construction resists thermal cycling and vibration without the brittleness of cast iron. No external power or active cooling is involved, so noise and power draw are not applicable. Installers should verify that system pressure and temperature remain within the Class 300 limits.

How it compares

Measured against everything we stock in Hose Fittings, Adapters & Clamps, at today’s prices. Recalculated every night.

Price $23.99
Pricier than about 60% of the 2,955 comparable items (median $17.99).

Specifications

Product
Brand nameANVIL

Questions about this item

How do I install the 3/8 in NPT Class 300 malleable iron union without damaging the threads?

Apply thread sealant to the 3/8 in NPT male threads, hand-tighten the union nut, then use a wrench on the hex flats to secure it to the pipe schedule 80 connection. Avoid over-tightening which can crack the malleable iron body.

What maintenance or replacement will the 3/8 in NPT Class 300 malleable iron union need over time?

Inspect the union gasket periodically for leaks at the 2,000 psi @ 150 Degrees F maximum operating pressure. Replace the gasket if seepage occurs. The malleable iron body resists corrosion but check threads for damage during any disassembly.

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