Meet the STZ Industries 2 in. FIP x 2 in. FIP Black Steel Coupling — a precision-built, lead-free connector designed to join two 2-inch FIP pipes with reliability and ease. The black steel construction combines strength with a durable, professional finish that's ideal for industrial and commercial piping projects.
Why this coupling stands out
-
Lead-free safety: designed and manufactured with lead-free materials to meet modern plumbing and safety standards.
-
Two FIP ends: both ends are female iron pipe (FIP) threads, enabling straightforward connection to male-threaded fittings and components for a secure, leak-resistant seal.
-
Robust steel body: built for durability under typical service conditions, with a protective black finish that helps resist corrosion in indoor installations.
-
Wide operating window: rated for up to 300 psi and up to 150°F, making it suitable for water, heating, and light industrial piping in many environments.
-
Practical packaging: shipped bagged for clean storage and easy inventory management on job sites.
Specifications at a glance
-
End 1 Diameter: 2 in
-
End 1 Type: FIP
-
End 2 Diameter: 2 in
-
End 2 Type: FIP
-
Material: Steel
-
Finish: Black
-
Maximum Pressure: 300 psi
-
Maximum Temperature: 150°F
-
Packaging Type: Bagged
-
Product Type: Coupling
Applications and use cases
- Connecting two 2-inch FIP pipes in water distribution systems, hydronic heating loops, or irrigation lines where a reliable threaded connection is required.
- Replacing worn or damaged couplings in service cabinets, mechanical rooms, and utility closets where space is limited and a compact, risk-free join is needed.
- Retrofits or new builds where lead-free components are mandated for safety and compliance.
Installation tips
- Prepare threads with standard PTFE tape or pipe thread sealant on the male ends for a tight, leak-free seal.
- Hand-tighten, then use an adjustable wrench to finish with a firm, even torque. Avoid overtightening to prevent thread damage.
- Inspect for leaks after initial pressurization and retighten if necessary using proper plumbing practices.
Choosing the right coupling for your project
When you need a trusted, lead-free connection that aligns with 2-inch FIP piping, this STZ coupling delivers dependable performance in everyday piping tasks. It combines the strength of steel with a practical black finish and a straightforward, two-end, female-thread configuration — reducing downtime and simplifying installation.
