We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Round malleable iron cap fitting with threaded female NPT connection

Anvil

Anvil 0318901360 Malleable Iron Cap Class 3000 Drain Trap

SKU CH-VPRF-T4Y9C MPN 0318901360

A malleable iron drain cap rated for 2,000 psi at 150 °F and 300 psi at 550 °F with a -20 °F to 550 °F operating range

  • TypeDrain Components
  • MaterialHAWA
  • Malleable iron construction handles 2,000 psi at 150 °F
  • Class 3000 rating supports 300 psi steam at 550 °F
  • Female NPT threads fit 1 1/4 in pipe without extra fittings
  • Solid plug design seals drain lines from -20 °F to 550 °F
  • New Anvil cap installs straight from the box

Malleable Iron Drain Cap

The Anvil 0318901360 is a Class 3000 malleable iron cap designed for drain and trap assemblies. It serves plumbers and maintenance crews who need a solid plug for female NPT connections in industrial piping systems.

Upgrade from lower-class fittings

This cap replaces Class 150 or Class 300 components when the system operates at 2,000 psi at 150 degrees F or 300 psi steam at 550 degrees F. The jump is worth it when pressure or temperature exceeds the rating of standard drain fittings.

Pressure and temperature headroom

It comfortably handles continuous service from -20 degrees to 550 degrees F within the stated pressure limits. It runs out beyond 2,000 psi at 150 degrees F or above 300 psi steam pressure at the maximum temperature.

Highlights

  • Malleable iron construction handles 2,000 psi at 150 °F
  • Class 3000 rating supports 300 psi steam at 550 °F
  • Female NPT threads fit 1 1/4 in pipe without extra fittings
  • Solid plug design seals drain lines from -20 °F to 550 °F
  • New Anvil cap installs straight from the box

Specifications

TypeDrain Components
MaterialHAWA
BrandAnvil
Model0318901360

Questions about this item

What size pipe thread does the 1 1/4 in NPT cap fit?

The cap uses a 1 1/4 inch Female NPT thread to match standard iron pipe of the same nominal size.

How do I install the malleable iron cap without stripping the threads?

Clean both thread sets, apply pipe sealant tape or compound to the male threads only, then hand-tighten before a final quarter-turn with a wrench.

When should I replace this Class 3000 drain cap?

Replace it if you see cracks, heavy corrosion, stripped threads, or any leakage at the joint during system pressure tests.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.