Meet a dependable, lead-free solution for connecting two different pipe sizes in potable water systems: the STZ Industries 2-1/2 in FIP x 2 in FIP Black Malleable Iron Reducing Coupling. Built from durable malleable iron and finished in a protective black coating, this reducing coupling provides a secure, corrosion-resistant joint that you can count on in everyday plumbing tasks.
Key advantages of the STZ Industries reducing coupling
-
Two male-threads in one fitting: FIP ends on both sides allow seamless connections to compatible female-threaded piping, with a built-in reduction from 2-1/2" to 2" for efficient system layouts.
-
Lead-free construction: Designed with potable water safety in mind, meeting expectations for clean, compliant plumbing projects.
-
Malleable iron body: Offers robust durability and reliable performance under typical residential and commercial water pressures.
-
Black finish: Provides visible protection against corrosion while maintaining a classic, easy-to-clean exterior.
-
Pressure and temperature tolerance: Rated for up to 300 psi and up to 150°F, making it suitable for hot water lines and general water distribution tasks.
-
Practical packaging: Bagged packaging for straightforward handling and storage on job sites.
Why this reducing coupling matters for your project
When you need to bridge a larger 2-1/2" line down to a 2" pipe without soldering or welding, this FIP x FIP reducing coupling delivers a reliable, code-compliant connection. It’s ideal for retrofits, repairs, or new installations where you’re upgrading or repairing water supply lines in basements, utility rooms, or crawl spaces. The lead-free, malleable iron construction reduces the risk of corrosion over time, helping you achieve long-lasting results without frequent maintenance.
Use cases and ideal applications
- Residential water supply repairs where the existing 2-1/2" line must connect to a 2" run.
- Renovations or upgrades in homes and small commercial settings requiring a quick, reliable reducing joint.
- Repairs to aging piping systems that demand durable materials capable of withstanding normal household temperature fluctuations.
- Projects where a lead-free, potable-water-safe component is essential for compliance and safety.
Installation tips for best results
- Before installation, ensure all threads are clean and free of debris. Use an appropriate thread sealant or PTFE tape rated for potable water on the male threads of the adjacent piping components.
- Align fittings carefully to avoid cross-threading. Hand-tighten, then snug with a pipe wrench for a secure seal without over-tightening.
- Follow standard NPT thread guidelines when threading connections into compatible pipes. Do not exceed the recommended torque to maintain the integrity of the joint.
- Inspect the joint after installation for any signs of leakage and retorque if necessary after the first pressure test.
Specifications at a glance
- Product type: Reducing coupling (FIP x FIP)
- End 1: 2-1/2" FIP
- End 2: 2" FIP
- Material: Malleable iron
- Finish: Black
- Maximum pressure: 300 psi
- Maximum temperature: 150°F
- Lead content: Lead-free
- Packaging: Bagged
