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Malleable iron 90 degree elbow fitting, four inch FNPT, dark grey finish

Value Brand

Value Brand 4 in Malleable Iron 90 Degree Elbow Class 150

SKU CH-DBCE-C0HFM

A 4-inch malleable iron 90-degree elbow rated Class 150 with FNPT connections for plumbing systems

  • Connects pipes at 90 degrees using FNPT threads
  • Handles up to 300 psi at 150 degrees F for high-pressure systems
  • Malleable iron construction meets ASME B 16.3 and B 16.4 standards
  • FM Approved and UL Listed for verified safety compliance
  • Operates from -20 to 366 degrees F across demanding temperature ranges

4-inch Malleable Iron 90° Elbow

This 4-inch malleable iron elbow redirects flow by 90 degrees in threaded piping systems. It carries Class 150 rating and meets ASME B16.3, B16.4, ASTM A197 and ASTM A47 standards. FM Approved and UL Listed, it suits commercial and industrial plumbing installations.

Replacing worn or undersized elbows

Swap out cracked, corroded or lower-class fittings when system pressure approaches 300 psi at 150 °F or when steam service reaches 150 psi. The jump is worth it if the existing fitting lacks FM or UL certification or cannot handle the full -20 °F to 366 °F temperature range.

Capacity and headroom

Handles saturated steam at 150 psi and non-shock cold working pressure of 300 psi at 150 °F. Comfortably serves hydronic heating, compressed air and fire-protection lines within the rated temperature envelope. Runs out beyond Class 150 pressure limits or where welding is required instead of FNPT threads.

Highlights

  • Connects pipes at 90 degrees using FNPT threads
  • Handles up to 300 psi at 150 degrees F for high-pressure systems
  • Malleable iron construction meets ASME B 16.3 and B 16.4 standards
  • FM Approved and UL Listed for verified safety compliance
  • Operates from -20 to 366 degrees F across demanding temperature ranges

Specifications

BrandZORO SELECT

Questions about this item

Will a 4 in FNPT connection fit my existing pipe threads?

The elbow uses a 4 in FNPT connection type, so it threads onto a matching 4 in male NPT pipe end without adapters.

How do I install this malleable iron elbow without cracking it?

Apply PTFE tape or pipe dope to the male threads, hand-tighten, then turn one to two full turns with a pipe wrench — overtightening is the common error that splits the casting.

When should I plan to replace a Class 150 malleable iron elbow in steam service?

It is rated for 150 psi saturated steam up to 366 °F; inspect annually for corrosion or leakage and replace if threads show wear or the body shows scaling.

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