Lesso America
ABS DWV Closet Flange W/ Knockout Test Plug (HUB)
- SKU:
- LN800TL
- Availability:
- Usually Ships Same Day
- Weight:
- 0.00 LBS
Description
ABS DWV Closet Flange W/ Knockout Test Plug (HUB)
ABS DWV Closet Flanges with Knockout Test Plug provide a secure toilet-to-drain connection while incorporating a temporary knockout plug for approved DWV system testing during installation.
Featuring a hub connection for compatible ABS DWV pipe, this closet flange is designed to connect and support a toilet at the sanitary drainage system while providing a built-in knockout test plug prior to fixture installation. The knockout temporarily closes the opening so the DWV system can be tested using an appropriate approved method before the toilet is installed. Once testing is complete, the knockout is removed to open the flange for final fixture connection. Manufactured for ABS DWV service, it meets recognized standards including ASTM D2661, CSA B181.1, and NSF Standard 14.
Product Highlights
- ABS DWV closet flange with knockout test plug
- Hub connection configuration
- Designed for toilet installations
- Built-in knockout provides temporary test closure
- Allows approved DWV testing before fixture installation
- Knockout is removed before final toilet connection
- Provides connection between a toilet and ABS DWV piping
- Supports secure fixture mounting at floor level
- Hub connection accepts compatible ABS DWV pipe
- Designed for solvent-cement installation
- Suitable for sanitary drain, waste, and vent systems
- Suitable for residential and commercial plumbing applications
- Non-pressure fitting
- Maximum operating temperature of 140°F
- Not intended for compressed air or gas service
- Testing should be limited to the intended knockout test-plug application
- Manufactured from virgin ABS polymers
- Complies with ASTM D2661
- Certified to CSA B181.1
- Meets NSF Standard 14 requirements
Technical Specifications
| Product Type | ABS DWV Closet Flange with Knockout Test Plug |
|---|---|
| Material | ABS |
| Connection Type | Hub |
| Test Feature | Built-In Knockout Test Plug |
| Joint Method | Solvent Cement |
| System Type | Drain, Waste, and Vent (DWV) |
| Pressure Service | Non-Pressure |
| Maximum Operating Temperature | 140°F |
| Primary Function | Connect and Support a Toilet While Providing Temporary DWV Test Closure |
| Referenced Standards | ASTM D3965, ASTM D2661, CSA B181.1, NSF Standard 14 |
| Typical Applications | Toilet Installations, Residential Bathrooms, Commercial Restrooms, Sanitary Drainage, and ABS DWV Systems |
Connection Configuration
ABS Hub Connection
The hub accepts compatible ABS DWV pipe and is designed for a permanent solvent-cement connection to the sanitary drainage system.
Knockout Test Plug
The built-in knockout temporarily closes the flange opening for approved DWV testing and is removed before the toilet is connected.
Knockout Test Plug Design
The integral knockout provides a temporary closure at the closet flange during the rough-in and testing stage of installation.
This allows the drainage system to remain closed at the toilet connection while appropriate DWV leak or system testing is performed.
After testing is complete, the knockout is removed to open the flange for the final toilet connection. The knockout is not intended to remain in place during normal fixture operation.
Why Choose an ABS DWV Closet Flange with Knockout?
Installation & Testing
- Built-in temporary test closure
- Eliminates the need for a separate temporary plug in some installations
- Allows DWV testing before the toilet is installed
- Knockout removes for final fixture connection
- Useful during new construction and rough-in work
Fixture Connection
- Designed specifically for toilet installations
- Connects directly to ABS DWV piping
- Provides fixture mounting interface at floor level
- Suitable for residential and commercial plumbing
- Compatible with non-pressure ABS DWV systems
Typical Applications
Toilet Installations
- Residential bathrooms
- Commercial restrooms
- New construction
- Bathroom remodels
- ABS DWV closet connections
Rough-In & Testing
- DWV system rough-in
- Pre-fixture testing
- Temporary closet opening closure
- Sanitary drainage installations
- Residential and commercial plumbing
Standards & Compliance
- ASTM D3965: ABS material requirements for pipe extrusion and molded fittings
- ASTM D2661: Schedule 40 ABS drain, waste, and vent pipe and fittings
- CSA B181.1: ABS drain, waste, and vent pipe, fittings, and accessories
- NSF Standard 14: Plastic piping system components and related materials
Installation
Verify the nominal hub size before installation and confirm compatibility with the intended ABS DWV closet drain piping.
Position the flange at the proper elevation and orientation for the finished floor and toilet installation.
Cut the mating ABS pipe square and remove burrs. Clean and prepare the pipe and hub surfaces according to accepted ABS solvent-cement installation procedures.
Dry-fit the flange before applying solvent cement to confirm pipe engagement, flange orientation, mounting alignment, and accessibility of the knockout.
Apply compatible ABS solvent cement as required and fully seat the pipe into the hub while maintaining correct flange position.
Perform only the appropriate DWV test permitted by the manufacturer and applicable plumbing requirements. After successful testing, remove the knockout as intended and clear the opening before installing the toilet.
Secure the flange and complete the toilet connection according to applicable plumbing requirements and manufacturer installation recommendations.
Our piping specialists can help review your drain size, flange configuration, rough-in requirements, and ABS DWV compatibility before you order.
Email the GetPipe.com Team Visit Quick SupportFrequently Asked Questions
What is an ABS DWV closet flange with knockout test plug used for?
It connects a toilet to an ABS DWV system while providing a built-in temporary closure for approved system testing before the fixture is installed.
What does HUB mean?
It means the flange has a socket-style connection designed to accept compatible ABS DWV pipe.
What is the purpose of the knockout test plug?
The knockout temporarily closes the toilet opening during rough-in so the DWV system can be tested before final fixture installation.
Is the knockout permanent?
No. The knockout is intended as a temporary closure and is removed before the toilet is connected and placed into service.
Can the knockout be used for pressure testing?
The supplied product information identifies the knockout for testing but states that the fitting should not be used for pressure testing beyond the intended test-plug use. Follow the manufacturer's approved test procedure and applicable plumbing requirements.
Does the hub require solvent cement?
Yes. The hub connection is intended for compatible ABS solvent-cement installation.
Should the flange position be checked before cementing?
Yes. Dry-fit the flange first to confirm elevation, orientation, pipe engagement, and toilet mounting alignment.
Is this fitting intended for pressure piping?
No. This fitting is intended for non-pressure drain, waste, and vent applications.
Can it be used for compressed air or gas?
No. The supplied product information states that ABS DWV fittings are not intended for transporting compressed air or gas.
What is the maximum operating temperature?
The supplied product information specifies applications where operating temperatures do not exceed 140°F.
What should I verify before ordering?
Confirm the hub size, toilet drain size, flange configuration, finished-floor requirements, knockout test-plug configuration, and compatibility with the intended ABS DWV system.
Important Ordering & Installation Notes
- This listing is for an ABS DWV Closet Flange with Knockout Test Plug and HUB connection.
- Verify the nominal hub size before ordering.
- Confirm compatibility with the intended toilet drain and ABS DWV piping.
- The fitting includes an integral knockout test plug.
- The knockout is intended as a temporary closure during installation and testing.
- Remove the knockout before the toilet is placed into service.
- Use the knockout only for the manufacturer's intended DWV testing procedure.
- Do not use the fitting for pressure testing beyond its intended test-plug application.
- The hub accepts compatible ABS DWV pipe.
- The hub is intended for solvent-cement installation.
- Confirm flange elevation relative to the finished floor before installation.
- Confirm toilet mounting orientation before applying solvent cement.
- Dry-fit the flange and pipe before final assembly.
- Secure the flange according to applicable plumbing and installation requirements.
- Use an appropriate toilet sealing method for the final fixture installation.
- This fitting is intended for non-pressure drain, waste, and vent applications.
- Do not use for transporting compressed air or gas.
- Maximum operating temperature is 140°F.
- Use compatible ABS solvent cement for installation.
- Cut pipe square and remove burrs before assembly.
- Clean and prepare all mating surfaces before solvent-cement installation.
- Fully seat the ABS pipe into the hub.
- Maintain correct flange orientation while the solvent-cement joint sets.
- After removing the knockout, make sure no loose material remains in the drain opening.
- Allow the completed joint to cure according to the solvent cement manufacturer's recommendations before testing or service.
- Protect the fitting from incompatible chemicals, fire-stopping materials, thread sealants, and other aggressive agents that may damage ABS compounds.
- Consult manufacturer documentation for complete dimensions, test-plug instructions, and installation requirements.
- Follow applicable plumbing codes and manufacturer installation recommendations.
