Sigma 34SE1040C Street Elbow 4 in 150 Lb Galvanized Malleable Iron

Product Description

The SIGMA 34SE1040C is a 4-inch nominal galvanized malleable iron street elbow rated at 150 lb, designed for threaded pipe systems in commercial and industrial plumbing, gas distribution, and mechanical piping applications. The street elbow configuration combines a male NPT (MNPT) inlet with a female NPT (FNPT) outlet, allowing a direct connection to a female-threaded fitting or pipe end without requiring an additional coupling. This design reduces fitting count and saves space in tight runs. Licensed plumbers and pipefitters install this type of fitting during new construction and retrofit work where a directional change is required in a threaded iron pipe system.

This street elbow is suited for residential and commercial applications involving water, air, steam, and compatible gas lines where a 150 lb pressure-rated threaded fitting is specified. The galvanized finish provides corrosion resistance appropriate for exposed or moderately humid environments. It is commonly used in mechanical rooms, utility piping, and above-grade service lines where malleable iron construction is required by code or specification.

Key Features

• 4-inch nominal pipe size accommodates large-diameter threaded runs
• MNPT x FNPT end style enables street-elbow configuration for compact directional changes
• 150 lb pressure rating suitable for standard commercial and industrial piping service
• Malleable iron construction provides impact resistance and thread integrity
• Hot-dip galvanized finish resists corrosion in exposed or damp installations

Compatibility

Designed as an OEM-style replacement or new-installation fitting for 4-inch nominal threaded iron pipe systems rated at 150 lb per standard malleable iron fitting specifications.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable codes such as the International Plumbing Code (IPC) or International Fuel Gas Code (IFGC). Shut off and depressurize the pipe system completely before removing or installing any threaded fittings. Apply an appropriate thread sealant or PTFE tape to the male threads before assembly, and tighten to hand-tight plus wrench-tight without over-torquing malleable iron threads. Inspect threads on both the fitting and mating pipe for damage before installation.

Technical Specifications

• Nominal Pipe Size: 4 inches
• End Style: MNPT x FNPT
• Pressure Rating: 150 lb
• Material: Malleable Iron
• Finish: Galvanized

Standard Information

• Brand: SIGMA
• Manufacturer Part Number: 34SE1040C