Description

Description

Midland No-Hub Reducing Couplings

Midland No-Hub Reducing Couplings provide a dependable transition between different sizes of compatible no-hub cast iron pipe and fittings in drain, waste, and vent (DWV) systems.

Designed to simplify size changes while maintaining proper alignment and sealing performance, these reducing couplings combine a flexible elastomer sleeve with a stainless steel shield and clamp assembly for reliable long-term service.

Product Highlights

Reducing no-hub coupling for cast iron DWV systems
Connects two different nominal pipe sizes
Flexible elastomer sealing sleeve
Stainless steel shield and clamp assembly
Provides a secure, leak-resistant transition
Helps maintain proper pipe alignment
Corrosion-resistant stainless steel components
Available in multiple reducing size combinations
Suitable for drain, waste, and vent piping systems
Manufactured by Midland Industries

Technical Specifications

Product Type	No-Hub Reducing Coupling
Brand	Midland
System Type	Cast Iron DWV
Configuration	Reducing
Primary Function	Connecting Different Sizes of Compatible No-Hub Pipe or Fittings
Sealing Component	Flexible Elastomer Sleeve
Shield Material	Stainless Steel
Clamp Material	Stainless Steel
Installation Method	Mechanical Clamp Tightening to Manufacturer-Specified Torque
Typical Applications	Drain, Waste, and Vent (DWV) Piping Systems

Reducing Coupling Configuration

Larger Connection

One side is sized for the larger compatible no-hub pipe or fitting end in the transition.

Reducing Sleeve

The elastomer sleeve transitions between the two pipe diameters while providing the primary sealing surface at the joint.

Smaller Connection

The opposite side is sized for the smaller compatible no-hub pipe or fitting end.

Construction Details

Midland No-Hub Reducing Couplings combine a durable elastomer sleeve with stainless steel shielding and clamp components to provide dependable sealing, flexibility, and mechanical support.

The reducing sleeve is designed to accommodate two different pipe diameters while maintaining proper contact around both mating ends.

Multiple stainless steel clamps distribute tightening force across the coupling to help maintain alignment and create a secure transition between the different pipe sizes.

Why Choose a No-Hub Reducing Coupling?

Direct Pipe Size Transition

Connects different no-hub pipe sizes
Combines coupling and reducing functions
Reduces the need for additional transition fittings
Useful for modifications and repairs
Available in multiple reducing combinations

Shielded Connection

Stainless steel shield
Multiple clamp bands
Flexible sealing sleeve
Helps maintain pipe alignment
Provides dependable DWV sealing performance

Typical Applications

Drain & Waste Systems

Cast iron drain piping
Waste piping systems
Building drainage systems
Commercial plumbing systems
System modifications and repairs

Vent & Transition Applications

Vent piping systems
Pipe size transitions
Mechanical rooms
Commercial and institutional projects
Compatible cast iron DWV connections

Size Selection

Midland No-Hub Reducing Couplings are available in multiple reducing size combinations.

Confirm both nominal pipe sizes before ordering. The larger and smaller ends of the coupling must match the compatible no-hub pipe or fitting ends being joined.

Installation Considerations

Clean and inspect both mating pipe or fitting ends before installation. Position the reducing sleeve so each end is fully seated over the correct pipe size.

Align the adjoining components before tightening and tighten all clamp bands evenly to the manufacturer's specified torque using an appropriate torque-controlled tool.

Ask Willy: Need Help Selecting a No-Hub Reducing Coupling?

Our pipe and fitting specialists can help review both pipe sizes, no-hub cast iron compatibility, reducing configuration, installation conditions, and project requirements before you order.

Email the GetPipe.com Team Visit Quick Support

Frequently Asked Questions

What is a no-hub reducing coupling?

It is a mechanical coupling designed to connect two different sizes of compatible no-hub cast iron pipe or fittings.

What piping systems are these couplings intended for?

The supplied product information identifies cast iron drain, waste, and vent (DWV) systems.

What creates the seal?

A flexible elastomer sleeve fits around both adjoining pipe or fitting ends and provides the sealing surface.

What is the purpose of the stainless steel shield?

The shield provides structural support around the joint and helps maintain alignment between the connected components.

Why are the two ends different sizes?

The coupling is designed to transition directly between two different nominal pipe sizes.

Are multiple reducing combinations available?

Yes. The supplied product information identifies multiple reducing size configurations.

Do the clamp bands require a specific torque?

Yes. Tighten all clamp bands to the manufacturer's recommended torque specification.

Should the pipe ends be cleaned before installation?

Yes. The mating surfaces should be clean and properly aligned before the coupling is installed and tightened.

Can this eliminate the need for a separate reducer?

In compatible no-hub DWV installations, the reducing coupling combines the size transition and mechanical connection into one assembly.

What should I verify before ordering?

Confirm both nominal pipe sizes, no-hub cast iron compatibility, reducing orientation, installation requirements, and applicable plumbing or project requirements.

Important Ordering & Installation Notes

This listing is for Midland No-Hub Reducing Couplings.
Designed for compatible cast iron DWV piping systems.
The two coupling ends are different nominal pipe sizes.
Verify both pipe sizes before ordering.
Confirm the larger and smaller ends match the intended piping components.
Clean both mating pipe or fitting ends before installation.
Inspect the elastomer sleeve and stainless steel components before assembly.
Fully seat each pipe or fitting end into the correct side of the reducing sleeve.
Align the connected piping before tightening the clamps.
Position the stainless steel shield correctly around the joint.
Tighten all clamp bands evenly.
Use an appropriate torque-controlled installation tool.
Tighten clamps to Midland's recommended torque specification.
Install according to applicable plumbing codes and project requirements.
Follow Midland manufacturer recommendations for proper installation and system performance.