Spears
Schedule 80 CPVC Van Stone Flange w/ Plastic Ring (Spigot)
- Availability:
- Usually Ships Same Day
- Weight:
- 0.00 LBS
Description
Schedule 80 CPVC Van Stone Flange w/ Plastic Ring (Spigot)
Schedule 80 CPVC Van Stone Flange w/ Plastic Ring (Spigot) provides a flanged transition for compatible Schedule 80 CPVC piping. The fitting combines a CPVC spigot connection with a separate plastic backing ring for bolted flange assembly.
The Schedule 80 CPVC Van Stone flange is designed for piping layouts that require a detachable bolted connection while maintaining a solvent-cement CPVC interface. Selection should account for nominal size, spigot compatibility, mating flange requirements, bolt alignment, gasket selection, and proper CPVC installation procedures.
Product Highlights
- CPVC construction
- Schedule 80 design
- Van Stone flange configuration
- Spigot connection interface
- Plastic backing ring
- Provides a detachable bolted connection
- Allows flange bolt-hole alignment during assembly
- Transitions compatible CPVC piping to flanged equipment
Technical Specifications
| Product Type | Van Stone Flange |
|---|---|
| Material | CPVC |
| Schedule | Schedule 80 |
| Configuration | Van Stone Flange with Plastic Ring |
| Connection | Spigot (SPG) |
| Spigot Interface | Compatible CPVC Socket |
| Backing Ring | Plastic |
| Flange Interface | Compatible Bolted Flange Connection |
| Joining Method | CPVC Solvent-Cement Connection x Bolted Flange Joint |
| Primary Function | Transition Compatible CPVC Piping to a Detachable Flanged Connection |
Van Stone Flange Design
The Van Stone flange design uses a separate backing ring around the flange hub rather than a fixed one-piece flange face and ring arrangement. This allows the ring to rotate for easier bolt-hole alignment during installation.
The flange should be matched with an appropriately sized compatible mating flange. Gasket, bolt pattern, and connection requirements should be confirmed before assembly begins.
Spigot Connection
The spigot connection is designed to fit into an appropriately sized compatible CPVC socket. This provides the solvent-cement side of the flange transition.
The spigot surface and receiving socket should be clean and properly prepared before joining. Compatible CPVC primer, solvent cement, insertion procedures, and required cure times should be followed.
Plastic Backing Ring
The plastic backing ring provides the bolting interface for the Van Stone flange assembly. Its rotating arrangement can simplify bolt-hole alignment with the mating flange during installation.
Bolts should be tightened evenly using an appropriate cross-pattern sequence. The mating flange, gasket, fasteners, and ring should remain properly aligned throughout assembly.
Schedule 80 CPVC Application
A Schedule 80 CPVC Van Stone Flange with Plastic Ring provides a detachable flanged connection for compatible CPVC piping systems. The design combines a solvent-cement spigot interface with a bolted flange joint for future service access.
System temperature, pressure, fluid compatibility, gasket requirements, mating flange compatibility, and applicable installation procedures should be reviewed for the intended application. Proper piping support should be maintained around the flange connection.
Installation & Selection Considerations
- Confirm the nominal size.
- Verify the spigot connection.
- Confirm mating flange compatibility.
- Check gasket and bolt requirements.
- Support piping near the flange joint.

Our piping specialists can help review nominal size, spigot compatibility, mating flange requirements, gasket selection, bolt alignment, and installation considerations before you order.
Frequently Asked Questions
What is a Schedule 80 CPVC Van Stone Flange used for?
It provides a detachable bolted flange connection between compatible CPVC piping and flanged piping or equipment.
What does Spigot mean on this flange?
The spigot connection is designed to fit into an appropriately sized compatible CPVC socket for solvent-cement joining.
What is the purpose of the plastic ring?
The plastic backing ring provides the bolting interface and can rotate to assist with bolt-hole alignment.
Does the flange require a gasket?
A compatible gasket is typically used between the flange faces and should be selected for the intended system conditions.
How should the flange bolts be tightened?
Bolts should be tightened evenly using an appropriate cross-pattern sequence while maintaining flange and gasket alignment.
What should I confirm before ordering?
Confirm nominal size, spigot connection, mating flange compatibility, gasket requirements, bolt pattern, and system conditions.
Important Ordering & Installation Notes
- Confirm the nominal size.
- Verify the spigot connection.
- Confirm mating flange compatibility.
- Check gasket and bolt requirements.
- Use compatible CPVC joining procedures.