Asc Engineered Solutions 8700134003 Reducing Coupling

Product Description

The ASC Engineered Solutions 8700134003 is a malleable black iron reducing coupling designed to connect pipe runs of two different diameters in threaded black iron piping systems. It transitions from a 1/2-inch female thread on one end to a 3/8-inch female thread on the other, using National Pipe Thread (NPT) form for a reliable, pressure-rated seal. The black finish provides baseline resistance to water, air, and steam exposure. Malleable iron construction delivers the high tensile strength and slight ductility required for mechanical and plumbing rough-in work, making it a standard fitting choice for licensed plumbers and pipefitters.

This reducing coupling is suited for residential and light commercial applications where threaded black iron pipe is the specified material. Typical installations include gas distribution piping, steam systems, compressed air lines, and general fluid conveyance where NPT fittings are code-compliant. It is sold individually and is appropriate for in-wall, in-ceiling, and exposed mechanical room runs where a diameter reduction is needed without additional fittings.

Key Features

• Malleable iron construction for high tensile strength and impact resistance
• 1/2-inch to 3/8-inch reduction in a single fitting, eliminating the need for a bushing and coupling combination
• National Pipe Thread (NPT) form for pressure-rated, leak-resistant threaded connections
• Black finish resists water, air, and steam in service conditions
• Lightweight at 0.172 pounds, minimizing added load on pipe runs

Compatibility

Designed as an OEM-style replacement or new-install fitting for threaded black iron pipe systems using standard NPT connections in 1/2-inch and 3/8-inch pipe sizes.

Installation Notes

Installation is performed by a licensed plumber or pipefitter in accordance with applicable local mechanical and plumbing codes, including IFGC and IPC guidelines where relevant. Shut off all gas, steam, or fluid supply and depressurize the line before disassembling or threading any fitting. Apply an appropriate thread sealant or PTFE tape rated for the service medium before making up the joint hand-tight, then wrench-tighten to a snug fit without over-torquing malleable iron threads. Inspect the completed joint for leaks before returning the system to service.

Technical Specifications

• Material: Malleable Iron
• Finish: Black
• Thread Type: National Pipe Thread (NPT)
• Inlet Size: 1/2 inches
• Outlet Size: 3/8 inches
• Weight: 0.172 pounds
• Sold As: Each
• UPC: 00690291025907

Standard Information

• Brand: ASC Engineered Solutions
• Manufacturer Part Number: 8700134003