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No-Hub Couplings; Heavy Duty

ASTM C 1540: Standard Specification for Heavy Duty Sheilded Couplings joining Cast Iron Soil Pipe and Fittings.
Scope: The purpose of this specification is to establish criteria for material dimensions and tolerences of haeavy duty shielded couplings to join hubless cast iron soil pipe and fittings in sanitary and storm drain, waste and vent piping applications.

Intended for use with DWV systems, no-hub couplings are used to join cast iron soil pipe that does not have the traditional Hub and Spigot. They are normally installed using a torque wrench. Generally, they have more clamps and provide a greater band load than standard no-hub couplings.

Cast Iron Drain, Waste, Vent/Sewer/Drainage SHORT FORM SPECS

     Cast Iron Soil Pipe  [71k pdf]

Cast Iron Drain, Waste, Vent/Sewer/Storm LONG FORM SPECS

    Hubless CISPI 310 Coupling  [565k pdf]

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