Dallas Specialty Mfg Co 89477 Brass Shank Extension

Product Description

The DALLAS SPECIALTY MFG CO 89477 is a brass shank extension fitting with 1/2 inch female iron pipe (FIP) inlet and 1/2 inch male iron pipe (MIP) outlet threads. Shank extensions are used to add thread length or reach where a standard fitting falls short of the connection point. The all-brass construction provides corrosion resistance and durability in wet or humid service environments. This type of fitting is a common component in plumbing, HVAC, and gas piping assemblies where threaded connections require an extended engagement point. Licensed plumbers and pipefitters typically install this hardware as part of rough-in or service work.

This fitting is suited for residential and light commercial plumbing and piping systems where NPT threaded connections are required. It is commonly used to extend valve stems, faucet shanks, or supply risers to reach panels, walls, or fixture mounting points. The 1/2 inch thread size is among the most common in domestic water supply and hydronic systems, making this extension a versatile component in repair and new installation work alike.

Key Features

• Brass construction resists corrosion in wet and humid service conditions
• 1/2 inch FIP inlet threads to standard NPT female connections
• 1/2 inch MIP outlet threads to standard NPT male connections
• Extends thread engagement or connection reach in tight or recessed installations
• Compatible with common threaded pipe fittings used in plumbing and HVAC piping

Compatibility

Designed as an OEM-style replacement or standard component for 1/2 inch NPT threaded plumbing and piping assemblies in residential and commercial systems.

Installation Notes

Installation should be performed by a licensed plumber or qualified pipefitter in accordance with applicable local plumbing codes and IPC guidelines. Shut off the water supply and relieve system pressure before beginning any threaded connection work. Apply thread sealant tape or pipe compound to male threads before assembly to ensure a leak-free joint. Do not overtighten brass fittings, as excessive torque can crack or distort the fitting body.

Technical Specifications

• Inlet Thread: 1/2 inch FIP (Female Iron Pipe, NPT)
• Outlet Thread: 1/2 inch MIP (Male Iron Pipe, NPT)
• Material: Brass

Standard Information

• Brand: DALLAS SPECIALTY MFG CO
• Manufacturer Part Number: 89477