STZ Industries 4 in. FIP x 4 in. FIP Galvanized Malleable Iron Coupling is engineered for durable, reliable connections in metal piping systems. With two female iron pipe thread (FIP) ends, this coupling provides a secure, straightforward solution for joining 4-inch pipe segments. The galvanized finish adds exceptional resistance to corrosion, making it suitable for water supply, outdoor installations, and other demanding environments. And with lead-free construction, it aligns with modern safety standards without compromising performance.
Key specifications
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End 1 diameter/type: 4 in. FIP
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End 2 diameter/type: 4 in. FIP
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Material: Malleable Iron
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Finish: Galvanized
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Maximum pressure: 300
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Maximum temperature: 150
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Packaging: Bagged
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Product type: Coupling
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Lead content: Lead-Free
Why this coupling stands out
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Durable, ductile strength: Malleable iron combines robustness with a degree of malleability, reducing the risk of cracks or fractures under pressure fluctuations.
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Corrosion resistance: A galvanized finish shields the connection from rust in moist or outdoor settings, extending service life.
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Safety and compliance: Lead-free construction supports safe drinking-water and plumbing applications while meeting contemporary standards.
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Simple, reliable installation: Two standard 4-inch FIP connections simplify replacement and repairs, with consistent threading for a dependable seal.
Ideal use cases
- Residential and commercial water distribution systems requiring robust 4-inch FIP connections.
- Outdoor plumbing and irrigation networks exposed to weather and humidity.
- Repairs or retrofits where galvanised metal piping is preferred for durability.
- Projects that demand a lead-free, corrosion-resistant coupling for long-term performance.
Installation and care tips
- Prepare threads with appropriate sealant or PTFE tape for a watertight seal. Do not over-torque; tighten by hand and finish with a wrench to avoid cross-threading.
- Inspect joints after installation and periodically thereafter for signs of corrosion or leakage, especially in outdoor or damp environments.
- Store in its bagged packaging in a dry location to preserve the galvanized finish until installation.
