Lesso America
PVC DWV Reducer Coupling (Hub x Hub)
- SKU:
- LP102
- Availability:
- Usually Ships Same Day
- Weight:
- 0.00 LBS
Description
PVC DWV Reducer Coupling (Hub x Hub)
PVC DWV Reducer Couplings provide a dependable transition between two different-sized PVC pipes in non-pressurized drain, waste, and vent piping systems.
Featuring hub connections on both ends, these reducer couplings create a secure solvent-weld transition from one nominal pipe size to another while helping maintain efficient flow through the DWV system. Durable PVC construction provides corrosion and chemical resistance for reliable service in residential, commercial, and industrial plumbing installations.
Product Highlights
- PVC DWV reducer coupling
- Hub x Hub connection configuration
- Connects two different nominal pipe sizes
- Provides a smooth transition between pipe sizes
- Designed for non-pressurized drain, waste, and vent systems
- Solvent-weld installation
- Durable PVC construction
- Corrosion-resistant material
- Resistant to many common plumbing chemicals
- Lightweight and easy to install
- Suitable for residential, commercial, and industrial DWV systems
Technical Specifications
| Product Type | DWV Reducer Coupling |
|---|---|
| Material | PVC |
| Connection Type | Hub x Hub |
| Configuration | Reducing |
| Function | Connects Two Different Nominal Pipe Sizes |
| Joint Method | Solvent Weld |
| System Type | Drain, Waste & Vent (DWV) |
| Pressure Service | Non-Pressure |
| Typical Applications | Residential, Commercial, and Industrial DWV Piping Systems |
Connection Configuration
Larger Hub
The larger hub accepts the corresponding larger nominal PVC pipe for a solvent-weld connection.
Reducing Transition
The fitting transitions the piping system from one nominal pipe size to another in a compact inline configuration.
Smaller Hub
The reducing hub accepts the corresponding smaller nominal PVC pipe for a secure solvent-weld connection.
Construction Details
PVC DWV reducer couplings are manufactured from durable PVC material for reliable long-term service in compatible non-pressure drainage systems.
Hub connections on both ends are designed for solvent-cement joining to compatible PVC pipe, creating permanent connections when properly installed.
The reducing configuration provides a direct transition between different nominal pipe sizes while helping maintain an efficient flow path through the DWV system.
Why Choose a DWV Reducer Coupling?
Pipe Size Transition
- Connects different nominal pipe sizes
- Compact inline configuration
- Hub x Hub connections
- Maintains a continuous piping run
- Eliminates the need for multiple transition fittings
PVC Construction
- Corrosion-resistant material
- Resistant to many common plumbing chemicals
- Lightweight and easy to handle
- Designed for solvent-weld assembly
- Suitable for long-term DWV service
Typical Applications
Drain & Waste Systems
- Residential drainage piping
- Commercial waste systems
- Building drain piping
- Fixture drain transitions
- General DWV installations
Pipe Size Transitions
- Changes between nominal pipe sizes
- Branch drainage systems
- Vertical and horizontal DWV piping
- New plumbing installations
- DWV system modifications and repairs
Solvent-Weld Installation
Cut compatible PVC pipe square and remove burrs before installation. Clean and prepare the pipe ends and fitting hubs according to accepted PVC solvent-weld procedures.
Apply compatible PVC primer and solvent cement where required, fully insert each pipe into its corresponding hub, and allow the completed joints to cure according to the solvent-cement manufacturer's instructions before placing the system into service.

Our plumbing specialists can help review your larger and smaller pipe sizes, DWV application, hub connections, and solvent-weld installation requirements before you order.
Email the GetPipe.com Team Visit Quick SupportFrequently Asked Questions
What is a PVC DWV reducer coupling?
A reducer coupling is a fitting designed to connect two PVC pipes with different nominal diameters in a drain, waste, and vent system.
What does Hub x Hub mean?
Hub x Hub means both ends of the fitting contain socket connections designed to accept compatible PVC pipe.
How is this different from a standard coupling?
A standard coupling normally joins two pipes of the same nominal size. A reducer coupling transitions between two different nominal pipe sizes.
How is the fitting installed?
Both hub connections are installed using compatible PVC solvent-weld procedures.
What does DWV mean?
DWV stands for Drain, Waste, and Vent.
Is this fitting intended for pressure applications?
No. This product is intended for non-pressurized drain, waste, and vent piping systems.
What material is the coupling made from?
The reducer coupling is manufactured from durable PVC.
Does the fitting resist corrosion?
Yes. PVC provides excellent resistance to corrosion and is also resistant to many chemicals commonly encountered in plumbing applications.
Can this fitting be used in commercial plumbing systems?
Yes. The supplied product information identifies residential, commercial, and industrial plumbing installations as suitable applications.
What should I verify before ordering?
Confirm both required nominal pipe sizes, the Hub x Hub configuration, PVC pipe compatibility, and that the application is a non-pressure DWV system.
Important Ordering & Installation Notes
- This listing is for a PVC DWV Reducer Coupling with Hub x Hub connections.
- This is a reducing fitting intended to connect two different nominal pipe sizes.
- Verify both the larger and smaller connection sizes before ordering.
- Designed for non-pressurized drain, waste, and vent applications.
- Use only with compatible PVC piping.
- Cut pipe square and remove burrs before assembly.
- Clean mating surfaces before solvent welding.
- Use compatible PVC primer and solvent cement where required.
- Insert each pipe fully into the corresponding fitting hub.
- Observe the solvent-cement manufacturer's recommended cure time.
- Do not use this DWV fitting for pressure applications.
- Verify fitting orientation and pipe-size transition before completing installation.
- Check completed joints for proper assembly before placing the system into service.
- Follow applicable plumbing codes and installation requirements.
- Refer to Lesso technical documentation for additional product and installation information.