521-225HC Black Pipe Merchant Coupling, 1 In. FPT

This black iron pipe coupling joins two sections of pipe with female pipe thread (FPT) connections. It is designed for above-ground gas, air, and LP piping systems where reliable, pressure-rated connections are essential.

Black iron fittings like this merchant coupling are commonly used in gas line installations, compressed air systems, and LP applications. The IPS threads allow compatibility with a broad range of plumbing hardware, valves, and pipe components, making this fitting versatile for both professional installations and DIY projects.

Features and Benefits

• Factory Pressure Tested: Each fitting is pressure tested at the factory to ensure quality and reliability in your installation.
• Durable Black Steel Construction: Black iron material provides excellent corrosion resistance for long-term use in above-ground applications.
• Pressure Rated: Rated for 150 psi operating pressure.
• UL and FM Listed: Certified to recognized safety standards for gas and air applications.
• IPS Thread Compatibility: Female pipe thread design connects easily with standard plumbing hardware, valves, and accessory components.
• Quick Assembly: The merchant coupling design enables fast, straightforward connections for efficient system assembly.

Specifications

• Brand: Stz Industries
• Model: 521-225HC
• Nominal Size: 1 inch
• Connection Type: FPT (Female Pipe Thread)
• Material: Iron
• Pressure Rating: 150 psi
• Certifications: UL and FM listed

Safety

• Above-Ground Use Only: Not approved for underground applications.
• Not for Potable Water: Do not use with drinking water systems.
• Check Local Codes: Always verify local plumbing and gas codes before starting any piping project.