Spears
Schedule 80 CPVC Van Stone Flange w/ Plastic Ring (Socket x Multi Bolt)
- Availability:
- Usually Ships Same Day
- Weight:
- 0.00 LBS
Description
Schedule 80 CPVC Van Stone Flange w/ Plastic Ring (Socket x Multi Bolt)
Schedule 80 CPVC Van Stone Flange w/ Plastic Ring (Socket x Multi Bolt) provides a detachable flanged transition for compatible Schedule 80 CPVC piping where a socket connection is required on the pipe side and a multi-bolt flange connection is required at the mating component. The Van Stone configuration incorporates a rotating plastic ring that provides flexibility when aligning bolt holes during assembly.
The Socket x Multi Bolt configuration combines a CPVC socket connection with a gasketed, bolted flange arrangement for connecting compatible valves, equipment, fittings, or other flanged components. Selection should account for nominal size, Schedule 80 CPVC compatibility, mating flange dimensions, bolt pattern, gasket requirements, system conditions, and available installation clearance.
Product Highlights
- CPVC construction
- Schedule 80 design
- Plastic flange ring
- Van Stone configuration
- Socket pipe connection
- Rotating flange ring design
- Multi-bolt flange connection pattern
- Simplifies bolt-hole alignment during flange assembly
Technical Specifications
| Product Type | Van Stone Flange with Plastic Ring |
|---|---|
| Material | CPVC |
| Schedule | Schedule 80 |
| Connection | Socket x Multi Bolt |
| Pipe Connection | Socket |
| Flange Connection | Multi Bolt |
| Flange Style | Van Stone |
| Ring Material | Plastic |
| Ring Configuration | Rotating Flange Ring |
| Joint Style | Socket x Gasketed Bolted Flange |
| Connection Function | Detachable Flanged Transition |
| Application | Compatible Schedule 80 CPVC Piping Systems |
Van Stone Flange Configuration
The Van Stone configuration uses a rotating flange ring around the CPVC fitting hub, allowing the bolt-hole pattern to be positioned independently of the socket connection. This provides additional flexibility when matching the flange to compatible valves, fittings, equipment connections, or adjoining flanged components.
The adjustable ring is particularly useful when the connected piping has already been positioned and precise bolt-hole orientation is required. Once the mating flange is aligned, the gasket and fasteners can be installed without rotating the solvent-cemented CPVC pipe connection to establish the bolt pattern.
Plastic Flange Ring Design
The plastic flange ring provides the rotating component of the Van Stone assembly while maintaining the nonmetallic configuration identified for this flange design. Its ability to rotate independently allows installers to establish bolt-hole alignment after the pipe-side connection has been positioned.
The ring and mating flange should be inspected before assembly so the bolt pattern and flange faces align without interference. The completed joint should be assembled without using the flange bolts to pull misaligned piping or equipment into the required position.
Socket Connection Design
The socket connection receives compatible CPVC pipe and provides the permanent pipe-side connection for the flange assembly. Proper pipe preparation and CPVC-compatible joining materials are important for establishing the socket joint before the bolted flange connection is completed.
The adjoining pipe should be cut square, prepared correctly, and inserted according to the approved CPVC joining procedure. Because the Van Stone ring remains adjustable, final bolt-hole alignment can be completed independently after the socket connection has been properly positioned.
Multi-Bolt Flange Connection
The multi-bolt flange connection creates a detachable mechanical joint with a compatible mating flange. A suitable gasket is positioned between the flange faces, while the required fasteners secure the connection and allow the joint to be separated later when maintenance or component replacement is required.
The surrounding piping should be properly supported and aligned before final bolting so unnecessary mechanical loads are not transferred to the flange assembly. Adequate working clearance should also be maintained for gasket placement, fastener installation, tightening, inspection, and future disassembly.
Installation & Selection Considerations
- Confirm the nominal size.
- Verify the plastic ring design.
- Match the mating flange bolt pattern.
- Check Schedule 80 CPVC compatibility.
- Allow clearance for flange assembly tools.

Our CPVC fitting specialists can help review your nominal size, Schedule 80 requirements, socket connection, plastic Van Stone ring, mating flange dimensions, multi-bolt pattern, gasket requirements, system compatibility, and available installation clearance before you order.
Frequently Asked Questions
What is this Schedule 80 CPVC Van Stone Flange used for?
It provides a detachable flanged transition between compatible Schedule 80 CPVC piping and a compatible mating flanged component.
What does Socket x Multi Bolt mean?
The pipe side uses a socket connection, while the opposite side uses a multi-bolt flange connection.
What is a Van Stone flange?
A Van Stone flange incorporates a rotating ring that allows the bolt-hole orientation to be adjusted independently of the connected piping.
What material is the flange ring?
This configuration is identified with a plastic flange ring that rotates around the fitting hub for bolt-hole alignment.
Why is the rotating ring useful?
The rotating ring simplifies alignment with the mating flange without requiring the connected CPVC piping to be rotated.
Is a gasket used at the flange connection?
A compatible flange gasket is typically positioned between the mating flange faces as part of the completed bolted joint.
Should the flange bolts correct piping misalignment?
No. The piping and mating component should be aligned before tightening rather than using the bolts to pull misaligned components together.
What should I confirm before ordering?
Confirm the nominal size, Schedule 80 CPVC compatibility, socket connection, plastic ring configuration, mating bolt pattern, gasket requirements, and installation clearance.
Important Ordering & Installation Notes
- Center the gasket before bolting.
- Inspect the plastic ring before use.
- Prepare the CPVC socket joint correctly.
- Tighten flange fasteners evenly in sequence.
- Support adjoining piping independently of the flange.