Description
The B K/MUELLER INDS(IMPORT) 520-205HN is a 1-inch black malleable iron 45-degree equal elbow designed for threaded pipe systems in gas, air, and industrial piping applications. This fitting redirects flow at a 45-degree angle while maintaining full bore continuity through equal-sized threaded ends. The black finish indicates a non-galvanized iron construction suited for natural gas, propane, and compressed air lines. Licensed plumbers, pipefitters, and HVAC technicians regularly specify this type of fitting in both new construction and retrofit work where a moderate directional change is needed without a sharp 90-degree turn.
This 45-degree elbow is used in residential and light commercial piping systems, including gas supply lines, black iron distribution manifolds, and threaded air distribution networks. It is sold in a package quantity of 5 units, making it practical for service contractors who need multiples on hand for recurring pipe routing work. The 1-inch pipe size fits standard Schedule 40 threaded black iron pipe, a common size in gas appliance branch lines and main distribution runs.
Key Features
- 45-degree angle provides a gradual directional change, reducing flow turbulence compared to a 90-degree elbow
- Equal end sizing on both ports allows straight inline thread-up with 1-inch NPT pipe
- Black iron construction compatible with natural gas, propane, and compressed air service
- Sold in a package of 5 units for efficient multi-fitting jobs
- Threaded design installs without welding or special tooling beyond a pipe wrench and thread sealant
Compatibility
Designed as an OEM-style replacement and general-use fitting for 1-inch threaded black iron pipe systems in residential and commercial gas and air distribution applications.
Installation Notes
Installation should be performed by a licensed plumber, pipefitter, or qualified HVAC technician in accordance with applicable local codes and IFGC requirements for gas piping. Shut off and verify zero pressure on the gas or air supply before disassembling any threaded connection. Apply an approved thread sealant or PTFE tape rated for gas service to all male threads before assembly. Do not over-tighten threaded fittings, as this can crack the fitting body or damage threads.
Technical Specifications
- Pipe Size: 1 inch
- Angle: 45 degrees
- End Type: Equal threaded (both ends)
- Finish: Black (non-galvanized)
- Package Quantity: 5 units
- Weight: 2.61 pounds
Standard Information
- Brand: B K/MUELLER INDS(IMPORT)
- Manufacturer Part Number: 520-205HN
