Meet the STZ Industries 3 in. FIP x 2 in. FIP Galvanized Malleable Iron Reducing Coupling — a purpose-built transition fitting designed to deliver dependable, leak-free connections where pipe sizes change from 3 inches to 2 inches. Built for real-world plumbing, it pairs a 3 in. female iron pipe thread with a 2 in. female iron pipe thread, all in a durable galvanized malleable iron body.
Key specifications
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End connections: 3 in. FIP on one end; 2 in. FIP on the other
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Material: Malleable iron for sturdy, impact-resistant joints
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Finish: Galvanized coating to resist corrosion in moist environments
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Maximum pressure: 300 psi
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Maximum temperature: 150
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Lead content: Lead-free
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Packaging: Bagged
Why this matters
In everyday plumbing, size mismatches are common. This reducing coupling provides a reliable, secure solution to transition from a 3-inch line down to a 2-inch line without sacrificing flow or integrity. The lead-free composition supports safe potable-water installations, while the galvanized exterior and malleable iron core deliver lasting performance under pressure and exposure to humidity.
Ideal use cases
- Residential and commercial water lines where a 3-inch pipe must connect to a 2-inch branch or service line
- Irrigation mains, sprinkler systems, or outdoor plumbing that require a durable reducer
- Basement, crawl space, or utility-room installations where space constraints demand a compact, robust FIP-to-FIP reducer
Practical installation notes
Use an appropriate thread sealant rated for metal FIP connections to ensure a leak-free joint. Align threads carefully and tighten per standard plumbing practice to achieve a secure seal while protecting the galvanized finish.
Why choose STZ Industries
This reducer stands out with a galvanized malleable-iron build that resists corrosion and minor impact, a lead-free interior for safer drinking-water connections, and straightforward FIP-to-FIP threading that fits seamlessly into existing piping systems. It’s a durable, reliable choice for any project requiring a robust 3 in. to 2 in. transition.
