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Black flexible rubber coupling with stainless steel bands, 3 inch by 1-1/2 inch size

Fernco Inc.

Fernco Inc. 1056-315 trap 3 in x 1-1/2 in

SKU CH-R2MW-9FDBH MPN 1056-315

Connects 3 in and 1-1/2 in pipes with a flexible elastomeric coupling rated to 4.3 psi and 140 Degrees F

  • Product typeDrain Components
  • Flexible elastomeric PVC connects 3 in to 1-1/2 in pipe securely
  • ASTM C1173 certified for reliable drain and trap installations
  • 300 stainless steel bands provide strong corrosion-resistant clamping force
  • Withstands 140 °F and 4.3 psi for durable sewer service
  • Resists chemicals fungus UV rays and normal sewer gases

Flexible drain coupling for size transition

This flexible coupling connects a 3 in pipe to a 1-1/2 in pipe using an elastomeric PVC body and 300 stainless steel bands. It meets ASTM C1173 and measures 4 in overall length with an inside diameter of 3-25/64 in by 1-57/64 in. The fitting is rated for 4.3 psi maximum pressure and 140 degrees F maximum temperature. It resists chemicals, fungus growth, normal sewer gases and ultraviolet rays.

For installers joining dissimilar drain sizes

The coupling suits residential and light commercial drain lines where a 3 in to 1-1/2 in transition is required and ASTM C1173 compliance is specified. It is not for pressure lines exceeding 4.3 psi, for systems operating above 140 degrees F, or for applications needing a rigid structural joint rather than a flexible seal.

3 in by 1-1/2 in pipe size compatibility

The single specification that decides fit is the 3 in x 1-1/2 in pipe size designation. Verify both pipe outside diameters match this coupling's inside diameter of 3-25/64 in by 1-57/64 in before purchase.

How it compares

Measured against everything we stock in Drain Stoppers, Strainers & Traps, at today’s prices. Recalculated every night.

Price $6.99
Cheaper than about 90% of the 4,240 comparable items (median $31.99).

Specifications

Product
Brand nameFernco
Model name1056-315
Product typeDrain Components

Questions about this item

What pipe sizes must I already have for the 1056-315 coupling to fit?

The coupling connects a 3 in pipe to a 1-1/2 in pipe, with inside diameters of 3-25/64 in and 1-57/64 in respectively.

Will the 300 stainless steel bands on this coupling corrode if I reuse my existing cast iron drainage pipes?

The 300 stainless steel bands resist normal sewer gases, chemicals and fungus growth, so they will not corrode when joined to cast iron.

How can I confirm the 1056-315 is seated correctly after installation?

When fully inserted, the 4 in fitting length should be evenly engaged on both pipes and the bands tightened until the elastomeric PVC body compresses uniformly.

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