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Galvanized malleable iron cross coupling with FNPT threads

Anvil

Anvil 3/8" FNPT Galvanized Cross Coupling 311069603

SKU CH-7K2C-T33E0

Galvanized malleable iron cross fitting with 3/8″ FNPT threads, rated 300 psi at 150 °F and 150 psi saturated steam at 350 °F, meeting ASTM A197 and ASME B16.3 with FM and UL listings

  • Connects four pipes with 3/8" FNPT threads
  • Galvanised malleable iron resists corrosion
  • Rated 300 psi at 150 °F for water, oil, gas
  • Meets ASME 16.3 and ASTM A197 standards
  • FM approved and UL listed for safety compliance

Product Identity

The Anvil 3/8" FNPT Galvanized Cross Coupling is a four-way pipe fitting made from galvanized malleable iron. It is designed for plumbers and maintenance technicians joining four sections of 3/8 inch threaded pipe in water, oil, or gas distribution systems.

Critical Specification

The fitting uses female National Pipe Taper threads on all four outlets and conforms to ASME B16.3 Class 150 dimensions. It carries FM approval and UL listing, with a maximum pressure rating of 300 psi at 150 degrees Fahrenheit for water, oil, and gas and 150 psi saturated steam at 350 degrees Fahrenheit.

Installation Reality

Thread sealant or PTFE tape must be applied to male threads before tightening to prevent leaks at the FNPT connections. Galvanized malleable iron can crack if overtightened, so installers should avoid excessive torque and verify alignment before final assembly.

Highlights

  • Connects four pipes with 3/8" FNPT threads
  • Galvanised malleable iron resists corrosion
  • Rated 300 psi at 150 °F for water, oil, gas
  • Meets ASME 16.3 and ASTM A197 standards
  • FM approved and UL listed for safety compliance

Specifications

BrandANVIL

Questions about this item

What does the 300 psi rating mean when this cross is installed in a water line?

The 300 psi rating is the maximum non-shock cold water pressure at 150 °F; above that temperature the allowable pressure drops.

How does the FNPT connection affect the seal on this galvanized cross?

FNPT threads are tapered so they seal by thread interference; a compatible male NPT thread and thread sealant are required for a leak-free joint.

What clearance is needed to thread this 3/8" cross onto pipe?

You need enough space for a pipe wrench to engage the 3/8" FNPT ports and the cross body, plus the length of the male pipe nipples being threaded in.

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