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
Galvanised malleable iron right-hand coupling with female NPT threads

Anvil

Anvil 1121 1 in Galvanized Malleable Iron Class 150 Right Hand Coupling

SKU CH-7GJN-PHEDQ

A galvanized malleable iron right-hand coupling rated for 300 psi at 150 °F and 150 psi saturated steam at 350 °F, meeting ASTM A197 and ASME B16.3 standards with FM and UL approvals

  • Galvanized malleable iron resists corrosion for long service life
  • Class 150 rating handles 300 psi at 150 °F WOG
  • FM Approved and UL Listed meeting ASTM A197 and ASME B16.3
  • Right-hand FNPT threads simplify installation on 1-inch pipe
  • Operates from -20 °F to 350 °F for steam and water systems

1-inch Right-Hand Pipe Coupling

The Anvil 1121 joins two lengths of 1-inch pipe with female National Pipe Taper threads. Galvanized malleable iron construction meets ASTM A197 and ASME B16.3 standards for water, oil and gas service. FM and UL listings confirm suitability for fire-protection and general industrial piping systems.

Class 150 Galvanized Malleable Iron Build

The coupling withstands 300 psi at 150 degrees Fahrenheit water-oil-gas and 150 psi saturated steam at 350 degrees Fahrenheit. Operating range spans -20 to 350 degrees Fahrenheit. FNPT threads allow direct assembly without welding, while the galvanized coating resists corrosion in damp or outdoor installations.

Replaces Damaged or Undersized Threaded Fittings

Installers choose this coupling when a leak-free joint is required on existing 1-inch threaded pipe. The jump is worth it when system pressure or temperature approaches the 300 psi or 350 degrees Fahrenheit limits of lower-rated fittings. Not for applications needing left-hand threads, larger diameters or welded connections.

Highlights

  • Galvanized malleable iron resists corrosion for long service life
  • Class 150 rating handles 300 psi at 150 °F WOG
  • FM Approved and UL Listed meeting ASTM A197 and ASME B16.3
  • Right-hand FNPT threads simplify installation on 1-inch pipe
  • Operates from -20 °F to 350 °F for steam and water systems

Specifications

BrandAnvil

Questions about this item

What pressure does the Class 150 rating allow at 150 °F?

The coupling is rated for 300 psi water, oil or gas at 150 °F and 150 psi saturated steam at 350 °F.

What thread size and type does the 1 in coupling use?

It has 1 in FNPT female threads on both ends to match standard NPT pipe.

How do you seal the threads without cracking the iron?

Apply PTFE tape or pipe dope to the male threads, hand-tighten, then turn one to two turns with a wrench — over-tightening splits the malleable iron.

Also in this aisle

People compared these

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