Spears
PVC Sch. 80 Van Stone Flange (Socket x Multi Bolt)
- Availability:
- Usually Ships Same Day
- Weight:
- 0.00 LBS
Description
PVC Sch. 80 Van Stone Flange (Socket x Multi Bolt)
PVC Sch. 80 Van Stone Flange (Socket x Multi Bolt) provides a flanged transition for compatible Schedule 80 PVC piping where a socket connection is required on the pipe side and a bolted flange connection is required at the mating component. The Van Stone configuration uses a rotating flange ring that helps simplify bolt-hole alignment during assembly.
The Socket x Multi Bolt configuration combines a solvent-cement socket connection with a multi-bolt flange pattern for joining compatible flanged equipment, valves, or piping components. Selection should account for nominal pipe size, mating flange compatibility, bolt pattern, gasket requirements, system conditions, and the clearance needed for proper flange assembly.
Product Highlights
- PVC construction
- Schedule 80 design
- Van Stone configuration
- Socket pipe connection
- Rotating flange ring design
- Multi-bolt flange connection pattern
- Simplifies bolt-hole alignment during assembly
- Provides a detachable connection to compatible flanged components
Technical Specifications
| Product Type | Van Stone Flange |
|---|---|
| Material | PVC |
| Schedule | Schedule 80 |
| Connection | Socket x Multi Bolt |
| Pipe Connection | Socket |
| Flange Connection | Multi Bolt |
| Flange Style | Van Stone |
| Ring Configuration | Rotating Flange Ring |
| Joint Style | Solvent-Cement Socket x Bolted Flange |
| Connection Function | Detachable Flanged Transition |
| Application | Compatible Schedule 80 PVC Piping Systems |
| Primary Function | Connect PVC Piping to Compatible Flanged Components |
Van Stone Flange Configuration
The Van Stone design incorporates a rotating flange ring around the hub portion of the fitting. This allows the bolt holes to be positioned independently of the socket connection, providing additional flexibility when aligning the flange with a compatible mating flange.
The rotating ring can be especially useful when the connected PVC pipe has already been positioned or when precise bolt-hole orientation would otherwise complicate installation. Once alignment is established, the flange assembly can be gasketed and bolted according to the requirements of the piping system.
Socket Connection Design
The socket connection receives compatible PVC pipe and provides the permanent pipe-side connection for the flange assembly. Proper pipe preparation and the appropriate PVC solvent-cement joining procedure are important for developing a properly assembled socket joint.
The pipe should be cut square, prepared correctly, and inserted to the required socket depth during assembly. Because the flange ring can rotate separately, final bolt-hole orientation does not have to be established by rotating the solvent-cemented pipe connection itself.
Multi-Bolt Flange Connection
The multi-bolt flange connection provides a detachable mechanical joint to a compatible mating flange on piping, valves, equipment, or other system components. A suitable gasket is positioned between the flange faces, while the bolt set secures the assembled connection.
Mating flange dimensions and bolt-hole patterns should be confirmed before ordering because proper mechanical alignment is essential to the completed joint. The flange faces should meet evenly without using the bolts to force misaligned piping or equipment into position.
Flanged System Installation
A Van Stone flange provides convenient connection and disassembly access at locations where piping may need to be separated from equipment or another flanged component. This makes the flange configuration useful around valves, pumps, process equipment, and other serviceable piping connections.
The surrounding piping should be independently supported so excessive weight or misalignment is not transferred to the flange joint. Proper gasket placement and an even bolt-tightening sequence help distribute loading around the flange face during final assembly.
Installation & Selection Considerations
- Confirm the nominal pipe size.
- Select the proper flange gasket.
- Match the mating flange bolt pattern.
- Verify Schedule 80 PVC compatibility.
- Allow clearance for bolts and assembly tools.

Our PVC fitting specialists can help review your nominal pipe size, Schedule 80 requirements, socket connection, mating flange dimensions, multi-bolt pattern, gasket selection, system conditions, and installation clearance before you order.
Frequently Asked Questions
What is a PVC Sch. 80 Van Stone Flange used for?
It provides a detachable flanged transition between compatible Schedule 80 PVC piping and a mating flanged valve, fitting, equipment connection, or piping component.
What is a Van Stone flange?
A Van Stone flange uses a rotating flange ring that allows the bolt-hole orientation to be adjusted independently of the connected PVC pipe.
What does Socket x Multi Bolt mean?
The pipe side uses a socket connection, while the opposite side uses a multi-bolt flange connection to a compatible mating flange.
Why is the rotating flange ring useful?
The rotating ring simplifies bolt-hole alignment and reduces the need to orient the pipe connection solely to match the mating flange.
Is a gasket used with the flange connection?
A compatible flange gasket is typically installed between the mating flange faces as part of the completed bolted joint.
Should the bolts be used to correct pipe misalignment?
No. The piping and mating component should be properly aligned before tightening rather than using flange bolts to pull misaligned components together.
Should the piping be supported near the flange?
Yes. Proper piping support helps prevent excessive weight, movement, or alignment loads from being transferred to the flange connection.
What should I confirm before ordering?
Confirm the nominal size, Schedule 80 PVC requirement, socket connection, mating flange dimensions, bolt pattern, gasket requirements, and installation clearance.
Important Ordering & Installation Notes
- Prepare the socket joint correctly.
- Align piping before installing the bolts.
- Tighten flange bolts evenly in sequence.
- Center the gasket between flange faces.
- Inspect both flange faces before assembly.