1-1/2 inch Galvanized Iron Coupling Female x Female

1-1/2 inch Galvanized Malleable Iron Coupling – Threaded F/F for Pipe Joint Integrity

The 1-1/2 inch Galvanized Malleable Iron Coupling is designed for use in threaded pipe systems where mechanical strength and corrosion resistance are required. This full-coupling fitting connects two male threaded iron or steel pipes of equal size and is commonly used in both water and low-pressure steam systems.

Manufactured from ASTM A197 malleable iron and hot-dip galvanized per ASTM A153, this coupling is suitable for systems where exposure to moisture, air, or corrosive conditions would compromise unprotected fittings. Its threaded ends conform to ASME B1.20.1, allowing for secure metal-to-metal sealing in pressure-rated systems.

Key Advantages for System Integrity

• ✅ Galvanized Coating – Zinc coating improves corrosion resistance in humid and wet environments, extending service life.
• ✅ Threaded Ends – NPT female threads offer reliable engagement and tight sealing without the need for welding or soldering.
• ✅ High-Strength Body – Malleable iron construction offers superior tensile strength for use in pressurized systems.
• ✅ Pressure Rated – Suitable for up to 300 PSI working pressure in water, oil, or gas service when installed properly with thread sealant.
• ✅ Uniform Cast Finish – Smooth threads and internal surface reduce turbulence and allow for better flow performance.

Specifications

• Size: 1-1/2 inch nominal pipe size
• Material: Galvanized malleable iron (ASTM A197)
• End Connections: NPT Female x Female (ASME B1.20.1)
• Pressure Rating: 300 PSI for non-shock cold water, oil, or gas applications
• Standards: UL/ULC Listed, FM Approved for applicable services

Recommended Use

This fitting is commonly specified in commercial, industrial, and residential systems for water distribution, fire protection lines (non-potable), compressed air, and low-pressure steam. It is also used in mechanical rooms, riser assemblies, and branch distribution piping where mechanical joints are permitted.

Installation Guidelines

Install using approved pipe joint compound or PTFE thread seal tape. Hand-tighten followed by wrench engagement per manufacturer torque recommendations to ensure leak resistance. Use in horizontal or vertical configurations as permitted by code and application.

Important Note

Not recommended for potable water systems without verification of NSF certification. For corrosive fluid systems, ensure material compatibility with the conveyed media.

The 1-1/2 inch Galvanized Malleable Iron Coupling provides a durable, pressure-rated solution for joining threaded pipe runs. Its mechanical strength and corrosion resistance make it suitable for demanding field conditions across a wide range of system designs.