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Cast iron reducing coupling, black asphalt finish, socket ends

Zoro Select

Zoro Select 222154 Reducing Coupling 3" x 6" Pipe

SKU CH-M3WT-C8V92

Cast iron reducing coupling joins 3 in and 6 in socket pipes with black asphalt coating

  • Cast-iron construction resists corrosion and wear
  • Reduces 6 in pipe to 3 in for size transitions
  • Female socket ends allow direct joint assembly
  • Black asphalt coating adds surface protection
  • Model 222154 identifies the exact fitting

Reducing Coupling 3" x 6

This Zoro Select reducing coupling joins a 3-inch pipe to a 6-inch pipe using female socket connections on both ends. It is made from gray cast iron with a black asphalt coating. The fitting is rated for zero psi maximum operating pressure and suits low-pressure plumbing or drainage installations.

Cast Iron Black Asphalt Finish

The gray cast iron body provides structural rigidity for buried or exposed pipe runs. The black asphalt coating adds a layer of corrosion resistance against soil moisture and external humidity. These material choices determine the coupling's suitability for non-pressurised waste or vent lines.

Zero PSI Pressure Class

This coupling carries a Class zero psi rating, meaning it is not designed for any internal pressure load. It cannot be used in pressurised water supply, pumped discharge or compressed air systems. Installers must restrict its use to gravity-flow drainage, vent stacks or similar unpressurised applications.

How it compares

Measured against everything we stock in Garden Hoses & Pipe Tubing, at today’s prices. Recalculated every night.

Price $54.99
Pricier than about 77% of the 973 comparable items (median $21.99).

Specifications

Product
Brand nameZORO SELECT

Questions about this item

Will the cast-iron body of the 222154 coupling need periodic re-coating?

The black asphalt coating protects the gray cast iron; inspect it during routine plumbing checks and reapply a compatible sealant only if the coating shows wear or damage.

What pressure limit governs sustained flow through this Class 0 psi fitting?

The coupling is rated for 0 psi maximum operating pressure, so it is intended for gravity-fed or vent lines rather than pressurised systems.

Does the asphalt-coated cast iron transmit noticeable heat or noise when water runs continuously?

Cast iron dampens flow noise effectively and the asphalt layer adds thermal mass, so the fitting remains quiet and only warm to the touch during all-day use.

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