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Galvanized ductile iron floor flange with four bolt holes

Anvil

Anvil 311105001 1/2" FNPT Galvanized Floor Flange Class 150

SKU CH-ZNPT-B4GE2

Galvanised ductile-iron floor flange with 1/2" FNPT thread and four bolt holes for secure mounting

  • Galvanized coating resists corrosion for longer service life
  • 1/2" FNPT connection fits standard piping systems
  • Four bolt holes enable secure floor mounting
  • Class 150 rating handles typical plumbing pressures
  • Ductile iron construction provides structural strength

Floor Flange 1/2" FNPT Class 150

This ductile iron floor flange provides a secure mounting point for 1/2 inch nominal pipe size systems. The galvanized coating protects against corrosion in damp environments. It suits residential and light commercial plumbing installations requiring a rigid floor connection. Builders needing a different nominal size or pressure class should select another fitting.

Galvanized Ductile Iron Thermals

The galvanized ductile iron body dissipates ambient temperature changes without deformation under normal water supply conditions. No moving parts generate noise during standard operation. The fitting adds negligible flow restriction to the piping network. Installers should verify compatibility with the existing pipe thread standard before assembly.

Class 150 Sustained Load Behaviour

Rated for Class 150 service, the flange maintains joint integrity under continuous design pressure at rated temperature. The four-bolt pattern distributes mechanical stress evenly across the mounting surface. Galvanizing remains intact through thermal cycling typical of hot water lines. Systems exceeding Class 150 parameters require a higher-rated component.

Highlights

  • Galvanized coating resists corrosion for longer service life
  • 1/2" FNPT connection fits standard piping systems
  • Four bolt holes enable secure floor mounting
  • Class 150 rating handles typical plumbing pressures
  • Ductile iron construction provides structural strength

Specifications

BrandANVIL

Questions about this item

How do I install the Anvil 311105001 floor flange and which step is often missed?

Thread the 1/2" FNPT connection onto the pipe using pipe sealant, then secure the flange to the floor through all four bolt holes; the step often missed is anchoring every hole to prevent movement under pressure.

What maintenance or replacement will the galvanized ductile iron flange need over time?

Inspect the galvanized coating periodically for corrosion; if the zinc layer wears through, the ductile iron can rust and the flange should be replaced to maintain a Class 150 seal.

What is the first limit that appears when the flange sees sustained pressure at its Class 150 rating?

The galvanized coating is the first limit; prolonged exposure to pressure and moisture can degrade the zinc layer, leading to corrosion of the underlying ductile iron.

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