Fernco 4" x 4" PVC to PVC Flexible Pipe Coupling (BLACK)
Buy It With
$148.54
Buy It With
$153.50
Fernco 4" x 4" Flexible Pipe Coupling is a trusted, high-performance solution for connecting same-size pipes in residential, commercial, and industrial plumbing systems. Made from durable elastomeric PVC, this coupling is engineered to create a leak-proof, flexible, and corrosion-resistant seal between 4-inch pipes of virtually any material—PVC, cast iron, steel, copper, or concrete.
Ideal for drain, waste, and vent (DWV) applications, this coupling easily absorbs vibration and slight pipe movement, making it perfect for underground or above-ground installations. The stainless steel clamps provide a secure and long-lasting fit, while the fast, no-hassle installation saves time on the job site or during repairs.
Key Features:
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Fits 4" x 4" pipe connections
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Flexible PVC body ensures a tight, leak-free seal
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Connects pipes of different materials: PVC, cast iron, steel, copper, and more
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Includes stainless steel clamps for corrosion resistance and durability
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Quick and easy installation – no special tools needed
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Ideal for DWV systems and both new construction and repairs
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Meets or exceeds ASTM D5926 and C1173 standards and CSA B602
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About Radon
What is Radon?
Radon is a radioactive gas formed from the decay of uranium in soil and rock.
It moves from the ground into homes in enclosed spaces like basements.
Health Risks Associated with Radon
Radon is the second leading cause of lung cancer after smoking.
Radon exposure is typically asymptomatic, meaning there are no immediate signs of illness.
How to Mitigate Radon Exposure
After identifying radon issues with accurate testing, you need to install mitigation systems.
If you need help identifying the best system or risks, we'll help you for free.