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Grey cast-iron blind flange, 4 inch nominal, eight bolt holes

Anvil

Anvil 0308016807 4 in Flanged Cast Iron Blind Flange Class 125

SKU CH-K1WT-RYTXS MPN 0308016807

A 4-inch flanged cast iron blind flange rated Class 125 with eight bolt holes for sealing pipe ends

  • TypeDrain Components
  • MaterialHAWA
  • 4 in nominal pipe size fits standard flanged connections
  • Cast iron construction rated for 175 psi maximum operating pressure
  • Class 125 flange drilled with 8 bolt holes for secure mounting
  • Operates from -20 degrees to 150 degrees F across varied conditions
  • Faced and drilled design simplifies installation in drain systems

4 inch Class 125 Blind Flange

This Anvil 0308016807 is a 4 inch nominal pipe size flanged cast iron blind flange designed to terminate piping systems. It suits plumbing installers and maintenance crews who need a reliable closure for drain components in commercial or industrial settings.

Thermals noise and power draw

The cast iron body handles a maximum operating pressure of 175 psi across a temperature range of -20 degrees to 150 degrees F. As a static component it generates no noise and draws no power during normal use.

Fits standard 4 inch flanged connections

The flange measures 9 inches in outside diameter and overall length with eight bolt holes drilled to Class 125 pattern. It bolts directly to matching flanged pipe or fittings, freeing the installer from welding or threading at the termination point.

Highlights

  • 4 in nominal pipe size fits standard flanged connections
  • Cast iron construction rated for 175 psi maximum operating pressure
  • Class 125 flange drilled with 8 bolt holes for secure mounting
  • Operates from -20 degrees to 150 degrees F across varied conditions
  • Faced and drilled design simplifies installation in drain systems

Specifications

TypeDrain Components
MaterialHAWA
BrandAnvil
Model0308016807

Questions about this item

How do I install the 4 in flanged cast iron blind flange and what step is often missed?

Align the eight bolt holes with the mating flange, insert gaskets between faces, then tighten all bolts in a cross pattern to the specified torque; skipping the cross-torque sequence causes uneven seating and leaks.

What maintenance or replacement will the cast iron blind flange need over time?

Inspect the faced surfaces and bolt holes annually for corrosion or erosion; replace the gasket whenever the joint is broken and swap the flange if wall thickness drops below the Class 125 minimum.

What limit appears first when the blind flange sees sustained pressure and temperature cycles?

The 175 psi maximum operating pressure combined with the -20 to 150 °F range defines the design envelope; sustained cycling near both extremes accelerates fatigue at the bolt-hole fillets.

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