Meet the ProLine BK Proucts 3 in. No Hub Coupling—a purpose-built, two-end hub connector designed for 3-inch piping. Crafted from a durable neoprene gasket paired with stainless steel hardware, this coupling delivers a reliable, flexible seal that stands up to everyday plumbing challenges while accommodating slight misalignment.
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Two 3" hub ends — precisely sized for hub-to-hub connections on both sides, enabling straightforward 3-inch piping installations.
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Material integrity — neoprene compression gasket with stainless steel components provides chemical resistance, corrosion resistance, and enduring flexibility.
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Lead-free construction — designed with safety in mind, offering a lead-free solution for plumbing applications.
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Temperature rating — capable of handling temperatures up to 220°F (104°C), suitable for typical drainage, vent, and hot-water scenarios within standard practices.
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Certifications — not IAPMO certified and not NSF listed, so verify compatibility with local codes for specific potable-water or regulated applications.
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Package — sold as a single piece for easy replacement or installation.
Why this matters in real-world use: the combination of neoprene and stainless steel delivers a dependable seal that tolerates minor pipe movement and environmental exposure, reducing the likelihood of leaks over time. The 3-inch hub-to-hub configuration makes it a practical choice for quick repairs, retrofits, or new installations where 3" hub piping is standard.
Ideal for:
- Connecting or repairing 3" hub piping in drainage and vent systems
- Retrofits where existing hub connections require a flexible, secure coupling
- Residential or light commercial plumbing tasks needing a robust, lead-free solution
Practical tips:
- Clean both pipe ends thoroughly before installation to ensure a clean, effective seal.
- Match the 3" hub size on both ends to your pipes for proper fitment.
- Hand-tighten clamps evenly, then apply a steady, uniform tighten to avoid over-compressing the neoprene gasket.
- After installation, test for leaks with soapy water and re-tighten if needed.
