Asc 8700157905 Black Iron Merchant Coupling 1/8 in

Product Description

The ASC Engineered Solutions 8700157905 is a 1/8 inch malleable black iron merchant coupling designed to join two lengths of straight pipe in low-pressure piping systems. This standard threaded fitting connects pipe to pipe without a change in direction or diameter, making it a staple component in water, oil, air, and gas distribution lines. Plumbers and pipefitters reach for merchant couplings when a full-length standard coupling is not required, as the shorter body reduces overall assembly length. The malleable iron construction provides adequate strength and ductility for typical low-pressure service conditions.

This coupling is suited for residential and light commercial piping applications where low-pressure service is the norm. Common install scenarios include water supply lines, compressed air distribution, fuel oil runs, and low-pressure gas piping. The black iron finish is standard for gas line work in both residential and commercial settings. Pipefitters and plumbers install this fitting in new construction and retrofit work alike.

Key Features

• 1/8 inch pipe size for small-diameter low-pressure runs
• Malleable iron construction provides ductility and resistance to cracking under stress
• Black iron finish suited for gas, oil, water, and air service
• Merchant-style body is shorter than a standard coupling, reducing assembly length
• Threaded ends connect straight pipe to straight pipe without change in direction

Compatibility

Designed as an OEM-style replacement or new-installation fitting for 1/8 inch NPT threaded black iron pipe systems in low-pressure water, oil, air, and gas service applications.

Installation Notes

Installation is performed by licensed plumbers or pipefitters following applicable code requirements, including IFGC guidelines for gas piping. Shut off the gas, water, or air supply and relieve system pressure before breaking into any existing line. Apply an approved thread sealant or PTFE tape to male threads before assembly. Do not overtighten threaded fittings on malleable iron, as the material, while ductile, can crack under excessive torque.

Technical Specifications

• Pipe Size: 1/8 inch
• Material: Malleable black iron
• Fitting Type: Merchant coupling
• Connection Type: Threaded (NPT)
• Weight: 0.037 pounds
• Sold As: Each

Standard Information

• Brand: ASC Engineered Solutions
• Manufacturer Part Number: 8700157905