Description
Schedule 80 PVC Coupling (FPT)
Schedule 80 PVC Coupling (FPT) provides a straight threaded connection between compatible male-threaded components. The female pipe-threaded openings accept appropriately sized compatible male pipe threads at both ends of the coupling.
The FPT coupling configuration combines two female-threaded connection interfaces within one Schedule 80 PVC fitting. Selection should account for nominal size, Schedule 80 PVC compatibility, mating male threads, thread alignment, sealing requirements, adjoining components, piping support, and available installation clearance.
Product Highlights
- PVC construction
- Schedule 80 design
- Female pipe threads
- Straight coupling configuration
- Provides an inline threaded connection
- Accepts compatible male-threaded components
- Uses threaded mechanical connection interfaces
- Joins two compatible male-threaded components within a straight piping run
Technical Specifications
| Product Type | Coupling |
|---|---|
| Material | PVC |
| Schedule | Schedule 80 |
| Connection | Female Pipe Thread (FPT) |
| Connection Count | Two |
| Fitting Configuration | Straight Coupling |
| Threaded Interface | Compatible Male Pipe Thread |
| Connection Style | Female Threaded x Female Threaded |
| Joining Method | Threaded Mechanical Connection |
| Piping Configuration | Straight Inline Threaded Connection |
| Direction Change | None |
| Primary Function | Join Compatible Male-Threaded Components in a Straight Piping Run |
Coupling Design
The straight coupling configuration joins compatible male-threaded components without changing the direction of the piping run. Female-threaded openings at both ends provide the mating interfaces for appropriately sized compatible male pipe threads.
The adjoining threaded components should be aligned before final assembly so the coupling remains centered within the straight connection. Planning the fitting position helps coordinate thread engagement, nearby fittings, piping support, and available working clearance.
Female-Threaded Connections
The FPT openings are designed to accept appropriately sized compatible male pipe threads at both ends of the coupling. Both mating threads should be confirmed before assembly to ensure the nominal size and thread configuration correspond with the intended installation.
Threaded components should be started carefully and kept properly aligned during assembly. Compatible thread-sealing materials and controlled installation help establish the connections while reducing unnecessary mechanical stress on the coupling and adjoining components.
Schedule 80 PVC Integration
The Schedule 80 PVC construction allows the coupling to integrate into compatible Schedule 80 PVC piping arrangements requiring a straight threaded connection. Matching the nominal size and female-threaded interfaces to the adjoining components helps maintain the intended piping configuration.
Application suitability should be evaluated using the requirements of the complete piping system rather than the schedule designation alone. Intended service conditions, adjoining materials, thread compatibility, sealing materials, installation environment, piping support, and applicable practices should all be considered during fitting selection.
Straight Threaded Connection
A Schedule 80 PVC Coupling (FPT) provides a direct inline connection between compatible male-threaded components. The FPT x FPT arrangement allows both adjoining components to connect within one compact straight coupling.
Installation planning should consider thread engagement, component alignment, nearby fittings, available clearance, and piping support. Connected components should align naturally with the coupling so the fitting is not relied upon to correct offsets or support improperly positioned piping.
Installation & Selection Considerations
- Confirm the nominal size.
- Verify both FPT connections.
- Check Schedule 80 PVC compatibility.
- Match both mating male threads correctly.
- Align adjoining components before assembly.

Our PVC fitting specialists can help review your nominal size, Schedule 80 requirements, FPT connections, mating male-threaded components, thread compatibility, sealing requirements, piping alignment, support requirements, installation layout, and available clearance before you order.
Frequently Asked Questions
What is a Schedule 80 PVC Coupling (FPT) used for?
It provides a straight threaded connection between two compatible male-threaded components.
What does FPT mean?
FPT means Female Pipe Thread and identifies an internally threaded connection designed to accept a compatible male pipe thread.
What connects to the FPT openings?
Both female-threaded openings accept appropriately sized compatible male-threaded components.
Does this coupling change the piping direction?
No. The coupling provides a straight inline threaded connection between compatible components.
Does this coupling use solvent cement?
No. The specified FPT connections use threaded mechanical connections rather than socket-style solvent-cement connections.
What should I confirm before ordering?
Confirm the nominal size, Schedule 80 PVC compatibility, FPT connection requirements, and both mating male-threaded components.
Important Ordering & Installation Notes
- Inspect both threads before use.
- Confirm the nominal connection size.
- Verify both mating male threads.
- Start threaded components carefully by hand.
- Use compatible thread-sealing materials.