Description
PVC DWV Cap (HUB)
PVC DWV Cap (HUB) provides a closed-end fitting for terminating compatible PVC drain, waste, and vent piping. The Spears® P116 series uses a socket-style hub connection that receives the matching PVC pipe or spigot-ended component while the opposite end remains permanently closed.
The hub cap configuration is available in multiple nominal sizes for closing the end of a PVC DWV run. Spears lists molded P116 sizes from 1-1/2" through 8", with the 8" version identified as a domed-style cap, allowing the closure to be matched to the required piping size and installation layout. :contentReference[oaicite:0]{index=0}
Product Highlights
- White PVC
- Hub connection
- Closed-end design
- Spears® P116 series
- Molded PVC construction
- Terminates compatible DWV piping
- Available from 1-1/2" through 8" sizes
- 8" configuration uses a domed-style cap design
Technical Specifications
| Product Type | DWV Cap |
|---|---|
| Manufacturer | Spears® Manufacturing Company |
| Series | P116 |
| Material | PVC |
| Color | White |
| Construction | Molded |
| Connection | Hub / Socket |
| Configuration | Closed-End Cap |
| Available Sizes | 1-1/2", 2", 3", 4", 6", and 8" |
| Spears Part Numbers | P116-015, P116-020, P116-030, P116-040, P116-060, and P116-080 |
| Published L Dimensions | 15/16", 1", 1-3/4", 2", 3-5/16", and 6-3/4" by Size |
| 8" Configuration | Domed Style |
| Product Code | 051 |
| System Type | Drain, Waste & Vent (DWV) |
| Primary Function | Terminate the End of Compatible PVC DWV Piping |
P116 DWV Cap Configuration
The Spears® P116 series provides a closed-end fitting for terminating a compatible PVC DWV pipe or fitting connection. The socket-style hub receives the adjoining PVC connection while the opposite end of the cap remains sealed as part of the molded fitting body.
This configuration is useful where a branch, run, or planned piping extension needs to end at a defined location. The cap size should match the adjoining PVC connection so the termination remains properly aligned with the surrounding drain, waste, and vent piping.
Hub Connection Design
The hub connection provides a receiving socket for compatible PVC pipe or an appropriately sized spigot-ended component. This allows the cap to install directly over the end connection without requiring a separate adapter between the pipe and closure.
The adjoining pipe should be prepared and aligned before permanent joining so the cap seats correctly on the intended connection. Proper positioning also helps keep the completed termination compact and consistent with the direction of the existing DWV run.
Available P116 Sizes
Spears lists the molded P116 series in 1-1/2", 2", 3", 4", 6", and 8" sizes. Published L dimensions are 15/16", 1", 1-3/4", 2", 3-5/16", and 6-3/4" respectively for those listed configurations. :contentReference[oaicite:1]{index=1}
The correct P116 variation should be selected according to the actual PVC DWV connection being closed. Spears also identifies the 8" P116 cap as a domed-style configuration, distinguishing it from the smaller molded cap sizes in the series. :contentReference[oaicite:2]{index=2}
End-of-Run Planning
A cap should be installed where a permanent closed termination is appropriate for the planned DWV layout. The final location should be established before joining so the cap does not interfere with nearby framing, piping, fixtures, or future system routing.
If future service access is required, a cleanout fitting may be more appropriate than a permanently closed cap. Reviewing the purpose of the termination before installation helps ensure the selected fitting matches the intended use of the piping system.
Installation & Selection Considerations
- Verify a HUB cap is required.
- Confirm the required pipe size.
- Check clearance at the pipe end.
- Identify whether future access is needed.
- Match the cap size to the adjoining PVC connection.
Our PVC DWV fitting specialists can help review your required P116 size, hub connection, adjoining PVC piping, termination location, available clearance, future access needs, and overall drain, waste, and vent layout before you order.
Frequently Asked Questions
What Spears® series is this PVC DWV Cap?
The molded PVC DWV hub cap is the Spears® P116 series.
What sizes are available?
Spears lists molded P116 caps in 1-1/2", 2", 3", 4", 6", and 8" sizes.
What connection does the P116 Cap use?
The P116 uses a hub or socket connection that receives compatible PVC pipe or a mating spigot-ended component.
What are the Spears® part numbers?
The listed molded part numbers are P116-015, P116-020, P116-030, P116-040, P116-060, and P116-080.
What is the purpose of a PVC DWV Cap?
It provides a closed termination at the end of a compatible PVC drain, waste, and vent pipe or fitting connection.
Is the 8" cap different from the smaller sizes?
Yes. Spears identifies the 8" P116 cap as a domed-style configuration.
Should I use a cap if future access is required?
A cleanout fitting may be more suitable when removable service access is needed, while a cap is intended to provide a closed termination.
What should I confirm before ordering?
Confirm the required P116 size, hub connection, adjoining PVC piping, termination location, and whether future cleanout access is needed.
Important Ordering & Installation Notes
- Keep the pipe end free of debris.
- Mark the required insertion depth.
- Inspect the hub before installation.
- Dry-position the cap before joining.
- Do not use a permanent cap where cleanout access is required.
