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Black flexible rubber coupling with two stainless steel clamps, tapered ends sized three inches by two inches

Fernco Inc.

Fernco Inc. 1056 Flexible Coupling 3" x 2" trap

SKU CH-QHZ7-8SJ1D

Flexible PVC coupling joins 3" and 2" drain pipes, rated to 4.3 PSI and 140 °F with stainless clamps

  • TypeDrain Components
  • MaterialElastomeric PVC
  • Connects 3" and 2" pipes with flexible elastomeric PVC
  • Resists chemicals, UV, fungus and sewer gases per ASTM D5926
  • Stainless steel clamps stay corrosion-free and rust-proof
  • Handles 4.3 PSI pressure and 140 °F operating temperature
  • Measures 3.45" × 2.45" × 3.95" for precise fit

Fernco 1056 Flexible Coupling 3" x 2

The Fernco 1056 flexible coupling joins a 3-inch pipe to a 2-inch pipe in sewer, drain, water and vent systems. Its elastomeric PVC body resists chemicals, ultraviolet rays, fungus growth and normal sewer gases. Stainless steel clamps provide corrosion-resistant, rust-proof sealing. The coupling meets ASTM D5926 requirements for reliable underground or above-ground installations.

Installation requirements and space savings

The coupling fits directly between pipes with inside diameters of 3.45 inches and 2.45 inches, requiring no special tools beyond a screwdriver or nut driver for the clamps. Its 3.95-inch overall length keeps the joint compact in tight trenches or wall cavities. Rated for 4.3 PSI maximum working pressure and 140 °F maximum operating temperature, it handles typical residential gravity-flow and low-pressure applications without additional support fittings.

Replaces rigid transition fittings

This coupling replaces rigid clay-to-cast-iron or clay-to-plastic transition fittings that cannot accommodate ground movement or minor misalignment. The flexible elastomeric body absorbs vibration and slight pipe settlement while maintaining a watertight seal. The jump is worth it when joining dissimilar pipe materials or sizes in retrofit repairs where rigid couplings would require exact alignment or additional adapter pieces.

Highlights

  • Connects 3" and 2" pipes with flexible elastomeric PVC
  • Resists chemicals, UV, fungus and sewer gases per ASTM D5926
  • Stainless steel clamps stay corrosion-free and rust-proof
  • Handles 4.3 PSI pressure and 140 °F operating temperature
  • Measures 3.45" × 2.45" × 3.95" for precise fit

Specifications

TypeDrain Components
MaterialElastomeric PVC
BrandFernco

Questions about this item

How much pressure can the coupling handle before it leaks?

The coupling is rated for a maximum working pressure of 4.3 PSI (29.6 kPa).

Will the elastomeric PVC material hold up to constant heat from drain lines?

It withstands a maximum operating temperature of 140 deg. F nonconsistent and resists chemicals, UV rays, fungus growth, and normal sewer gases.

What pipe sizes do I need to have on hand for this 3" x 2" coupling to fit?

It connects a pipe with a 3.45" inside diameter on one side to a pipe with a 2.45" inside diameter on the other.

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