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Black rubber flexible pipe coupling with two stainless steel clamps

Fernco Inc.

Fernco Inc. 1056-215 Flexible Coupling 2x1-1/2

SKU CH-CQBN-4P12M

Flexible elastomeric PVC coupling joins 2-inch to 1-1/2-inch pipe with corrosion-resistant stainless steel clamps for sewer, drain, water and vent systems

  • TypeDrain Components
  • MaterialElastomeric PVC
  • Resists chemicals and UV with ASTM D5926 elastomeric PVC
  • Corrosion-proof stainless clamps ensure lasting seal integrity
  • Handles 4.3 PSI pressure for reliable drain connections
  • Operates up to 140 °F in sewer and vent systems
  • Connects 2" to 1-1/2" clay, cast iron or plastic pipe

Fernco 1056-215 Flexible Coupling

This new elastomeric PVC coupling connects 2-inch and 1-1/2-inch pipes in sewer, drain, water and vent systems. It meets ASTM D5926 requirements and resists chemicals, ultraviolet rays, fungus growth and normal sewer gases. Stainless steel clamps provide corrosion-resistant, rust-proof sealing for clay to cast iron or plastic transitions.

Suitable Applications and Limits

The coupling suits installers joining dissimilar pipe materials in low-pressure gravity-flow systems. It is not for buyers who need a rigid joint, a high-pressure seal beyond 4.3 PSI or a fitting rated for continuous temperatures above 140 degrees Fahrenheit.

Critical Specification

The maximum working pressure is 4.3 PSI (29.6 kPa) and the maximum operating temperature is 140 degrees Fahrenheit non-consistent, which determines whether the part matches the system design.

Highlights

  • Resists chemicals and UV with ASTM D5926 elastomeric PVC
  • Corrosion-proof stainless clamps ensure lasting seal integrity
  • Handles 4.3 PSI pressure for reliable drain connections
  • Operates up to 140 °F in sewer and vent systems
  • Connects 2" to 1-1/2" clay, cast iron or plastic pipe

Specifications

TypeDrain Components
MaterialElastomeric PVC
BrandFernco

Questions about this item

What are the inside diameters I need on each pipe for the 2.45" and 1.95" ends of this 1056-215 coupling?

Side A fits a 2.45" inside diameter and side B fits a 1.95" inside diameter, matching a 2" x 1-1/2" nominal pipe transition.

Which way do the stainless steel clamps go on, and what torque stops them from leaking at 4.3 PSI?

Slide the coupling over both pipes, centre the clamps over each end, then tighten the band screws evenly until the gasket seats firmly.

How often should I check the elastomeric PVC body and clamps for cracks or corrosion in a 140 °F vent line?

Inspect once a year; the PVC resists chemicals, UV and fungus, and the stainless clamps are rust-proof, but thermal cycling can loosen bands over time.

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