Mueller Streamline 520-003 90 Deg Black Iron Elbow Fip

Product Description

The MUELLER STREAMLINE 520-003 is a 90-degree black malleable iron elbow with female threaded connections on both ends. Rated at 150 psi, this fitting is built for threaded pipe assemblies in gas distribution, steam, and lubrication systems. Malleable iron construction provides the toughness required for pressurized service, and the black finish is standard for gas piping applications. Licensed plumbers, pipefitters, and HVAC technicians install this fitting where a 1/2 inch FIP x FIP 90-degree change of direction is needed in a threaded iron pipe system.

This elbow is suited for residential and light commercial installations involving natural gas supply lines, LP gas distribution, steam piping, and lubricant or grease service lines. The 1/2 inch female threaded inlet and outlet accept standard tapered pipe threads, making it compatible with Schedule 40 black iron pipe assemblies commonly found in gas appliance rough-in and steam heating systems.

Key Features

• 90-degree turn in a compact malleable iron body for tight-space routing
• Female NPT x Female NPT connections on both ends for all-threaded assembly
• 150 psi pressure rating suitable for gas, steam, and lubricant service
• Black finish meets standard color-coding for gas piping systems
• Malleable iron material resists impact and thermal stress in pressurized lines
• Approved application range includes natural gas, LP gas, steam, lubricant oil, and grease

Compatibility

Designed as a standard 1/2 inch FIP x FIP threaded fitting for use in Schedule 40 black iron pipe systems. Compatible with natural gas, LP gas, steam, lubricant oil, and grease service lines in residential and light commercial piping assemblies.

Installation Notes

Installation should be performed by a licensed plumber, pipefitter, or qualified gas technician in accordance with the International Fuel Gas Code (IFGC) or applicable local codes. Shut off and bleed down the gas or fluid supply before disassembling or threading any fittings. Apply an approved pipe thread sealant or PTFE tape rated for the service medium to all male threads before assembly. After installation on gas lines, perform a leak test at operating pressure before restoring service.

Technical Specifications

• End Connection: Female Threaded x Female Threaded (FIP x FIP)
• Size: 1/2 inch
• Angle: 90 degrees
• Material: Malleable Iron
• Finish: Black
• Pressure Rating: 150 psi
• Application: Natural Gas, LP Gas, Steam, Lubricant Oil, Grease

Standard Information

• Brand: MUELLER STREAMLINE
• Manufacturer Part Number: 520-003