Spears
Schedule 80 CPVC Reducer Bush (MPT x FPT)
- Availability:
- Usually Ships Same Day
- Weight:
- 0.00 LBS
Description
Schedule 80 CPVC Reducer Bush (MPT x FPT)
Schedule 80 CPVC Reducer Bush (MPT x FPT) provides a compact threaded size transition between compatible female-threaded and male-threaded piping components. The fitting combines a Male Pipe Thread exterior with a reduced Female Pipe Thread connection.
The Schedule 80 CPVC reducer bush is designed for piping layouts where a larger female-threaded connection must transition to a smaller male-threaded component. Selection should account for both nominal sizes, mating thread compatibility, system conditions, and proper threaded CPVC installation procedures.
Product Highlights
- CPVC construction
- Schedule 80 design
- Reducer bush configuration
- MPT x FPT connections
- Male-threaded exterior
- Female-threaded reduced connection
- Provides a compact threaded size transition
- Connects compatible female and male threaded components
Technical Specifications
| Product Type | Reducer Bush |
|---|---|
| Material | CPVC |
| Schedule | Schedule 80 |
| Configuration | Male-Threaded x Female-Threaded Reducer Bush |
| Connection | Male Pipe Thread (MPT) x Female Pipe Thread (FPT) |
| MPT Interface | Compatible Female Pipe Thread |
| FPT Interface | Compatible Male Pipe Thread |
| Size Transition | Different Nominal Thread Sizes |
| Joining Method | Threaded Connections |
| Primary Function | Reduce a Female-Threaded Connection to a Smaller Male-Threaded Component |
Reducer Bush Design
The reducer bush design combines a larger male-threaded exterior with a smaller female-threaded interior. This creates a compact threaded reduction without requiring multiple separate adapter fittings.
Both nominal thread sizes should be confirmed before ordering because each side serves a different connection requirement. Correct orientation and thread engagement should be verified before final assembly.
Male Threaded Connection
The Male Pipe Thread connection is designed to engage an appropriately sized compatible female-threaded component. This forms the larger exterior connection of the reducer bush.
Threads should be clean and properly aligned before assembly. Appropriate threaded plastic-piping procedures and compatible sealing materials should be used while avoiding excessive tightening.
Female Threaded Connection
The Female Pipe Thread connection accepts an appropriately sized compatible male-threaded component. This provides the reduced connection within the threaded transition.
The mating component should be started squarely to help prevent cross-threading. Proper thread engagement should be maintained without applying excessive torque to the CPVC fitting.
Schedule 80 CPVC Application
A Schedule 80 CPVC Reducer Bush MPT x FPT provides a compact way to reduce between two compatible threaded connection sizes. Its nested configuration can simplify threaded transitions where installation space is limited.
System temperature, pressure, fluid compatibility, thread compatibility, and applicable installation procedures should be reviewed for the intended application. Piping should be properly supported so external loads are not transferred to the threaded fitting.
Installation & Selection Considerations
- Confirm both nominal sizes.
- Verify the MPT x FPT configuration.
- Confirm female-thread compatibility.
- Check male-thread compatibility.
- Avoid excessive threaded tightening.

Our piping specialists can help review both nominal sizes, MPT and FPT compatibility, threaded connection requirements, and installation considerations before you order.
Frequently Asked Questions
What is a Schedule 80 CPVC Reducer Bush used for?
It provides a compact threaded transition between different nominal connection sizes.
What does MPT x FPT mean?
It means the fitting has a Male Pipe Thread exterior and a Female Pipe Thread connection.
What connects to the MPT side?
The Male Pipe Thread side connects to an appropriately sized compatible female-threaded component.
What connects to the FPT side?
The Female Pipe Thread connection accepts an appropriately sized compatible male-threaded component.
Does this reducer bush require solvent cement?
No. The MPT x FPT configuration uses threaded connections rather than socket solvent-cement connections.
What should I confirm before ordering?
Confirm both nominal sizes, MPT x FPT configuration, mating thread compatibility, and system requirements.
Important Ordering & Installation Notes
- Confirm both nominal sizes.
- Verify the MPT x FPT configuration.
- Confirm mating thread compatibility.
- Start threaded connections squarely.
- Avoid excessive tightening of CPVC threads.