Spears
Schedule 80 PVC Van Stone Flange w/ PVC Ring (FIPT)
- Availability:
- Usually Ships Same Day
- Weight:
- 0.00 LBS
Description
Schedule 80 PVC Van Stone Flange w/ PVC Ring (FIPT)
Schedule 80 PVC Van Stone Flange w/ PVC Ring (FIPT) provides a female-threaded-to-flanged transition for compatible Schedule 80 PVC piping arrangements. The FIPT connection accepts an appropriately sized compatible male pipe thread, while the separate PVC flange ring provides the bolted interface needed to connect with a compatible mating flange.
The Van Stone flange configuration allows the PVC ring to rotate for bolt-hole alignment independently of the threaded hub before final assembly. Selection should account for nominal size, Schedule 80 PVC compatibility, mating male threads, flange compatibility, gasket requirements, bolt pattern, service conditions, piping alignment, and available installation clearance.
Product Highlights
- PVC construction
- Schedule 80 design
- FIPT connection
- PVC flange ring
- Van Stone flange configuration
- Provides convenient bolt-hole alignment
- Combines female threading with a flanged connection
- Supports threaded-to-flanged transitions in Schedule 80 PVC piping
Technical Specifications
| Product Type | Van Stone Flange |
|---|---|
| Material | PVC |
| Schedule | Schedule 80 |
| Connection | Female Iron Pipe Thread (FIPT) |
| Flange Ring Material | PVC |
| Flange Style | Van Stone |
| Threaded Interface | Compatible Male Pipe Thread |
| Ring Configuration | Rotating PVC Ring |
| Thread Joining Method | Threaded Mechanical Connection |
| Flange Joining Method | Bolted Mechanical Connection |
| Piping Configuration | Female-Thread-to-Flange Transition |
| Primary Function | Transition Compatible Schedule 80 PVC Piping to a Flanged Connection |
Van Stone Flange Design
The Van Stone flange configuration uses a separate flange ring around the hub rather than integrating the ring permanently into a fixed one-piece flange body. This arrangement provides greater flexibility during installation because the ring can be positioned for bolt-hole alignment with the compatible mating flange.
The threaded hub establishes the piping-side connection while the PVC ring provides the mechanical bolting interface for the flange joint. Keeping these functions separate can simplify final positioning when the adjoining threaded connection and mating flange must be coordinated within an established piping layout.
Female-Threaded Connection
The FIPT connection provides an internally threaded interface designed to accept an appropriately sized compatible male pipe thread. Careful initial engagement is important so the mating component enters squarely and follows the established thread path without being forced into the flange hub at an improper angle.
The threaded connection should be assembled using sealing materials and installation practices appropriate for the PVC piping system and intended service. Proper alignment and controlled tightening help establish the joint while reducing unnecessary mechanical loading caused by excessive force, improper engagement, or unsupported adjoining components.
Rotating PVC Ring
The PVC flange ring can be positioned around the Van Stone hub to coordinate its bolt holes with those of the compatible mating flange. This adjustability is especially useful when the piping-side connection has already established the hub position and final bolt-hole alignment still needs to be completed.
The ring should be positioned so the fasteners pass through the mating flange assembly without forcing either component out of alignment. Proper ring placement, gasket centering, and an even fastener-tightening sequence help distribute assembly forces around the flange joint during final installation.
Schedule 80 PVC Integration
A Schedule 80 PVC Van Stone Flange w/ PVC Ring provides a practical transition where a compatible male-threaded component must connect to a flanged piping component. The combination of a female-threaded hub and adjustable flange ring can simplify alignment while maintaining the required threaded-to-flanged connection arrangement.
Application suitability should be evaluated using the requirements of the complete piping system rather than the Schedule 80 designation alone. Mating flange compatibility, service conditions, thread compatibility, gasket selection, sealing materials, piping support, installation environment, and applicable practices should all be considered during flange selection.
Installation & Selection Considerations
- Confirm the nominal size.
- Verify the mating flange style.
- Match the mating male pipe thread.
- Check Schedule 80 PVC compatibility.
- Allow clearance for ring and bolt alignment.

Our PVC fitting specialists can help review your nominal size, Schedule 80 requirements, FIPT connection, mating male thread, PVC ring configuration, mating flange, gasket requirements, bolt alignment, adjoining piping support, and available installation clearance before you order.
Frequently Asked Questions
What is a Schedule 80 PVC Van Stone Flange used for?
It provides a transition between a compatible male-threaded piping connection and a mating flanged component within a Schedule 80 PVC piping arrangement.
What does FIPT mean?
FIPT means Female Iron Pipe Thread and identifies the internally threaded connection provided by the flange hub.
What connects to the FIPT opening?
The FIPT opening accepts an appropriately sized compatible male pipe-threaded component.
What is a Van Stone flange?
A Van Stone flange uses a separate flange ring around the hub, allowing the ring to be positioned for alignment with a compatible mating flange.
Why does this flange use a PVC ring?
The PVC ring provides the bolted flange interface and can be positioned to coordinate the bolt holes with the mating flange during assembly.
Does the threaded connection use solvent cement?
No. The FIPT connection uses a threaded mechanical joint rather than a solvent-cement socket connection.
Important Ordering & Installation Notes
- Inspect both interfaces before use.
- Center the gasket before bolting.
- Start mating threads carefully by hand.
- Align the PVC ring before tightening fasteners.
- Support adjoining piping independently of the flange.