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Spears 856-100 10" PVC Van Stone Flange Spigot, CL150
The Spears 856-100 is a 10" PVC Van Stone Flange Spigot rated Class 150 (CL150), engineered to provide a reliable, bolt-ready transition between PVC piping runs and flanged valves, pumps, or equipment. Molded from durable PVC, this spigot-style Van Stone flange fitting is built for demanding pressure piping applications where corrosion resistance and long-term performance matter. Its CL150 rating and spigot end configuration make it a practical solution for connecting rigid PVC pipe to ANSI Class 150 flanged components.
Key Features
- Trade Size: 10" nominal size for large-diameter PVC piping systems.
- Durable Construction: Molded PVC body resists corrosion, rust, and chemical attack common with metallic flanges.
- Van Stone Flange Design: Spigot-style Van Stone flange allows a free-floating flange ring for easier bolt-hole alignment during installation.
- Pressure Rating: CL150 (Class 150) rating suited for standard-duty PVC pressure piping applications.
- Spigot End Connection: Spigot end permits solvent-weld joining directly into PVC pipe or fittings.
- Lightweight Handling: PVC construction is significantly lighter than comparable metal flanges, easing installation and reducing labor strain.
Technical Specifications
- Product Size: 10
- Product Subgroup: Fittings
Typical Applications
- PVC Pressure Piping Systems
- Flanged Connections to Valves and Pumps
- Water and Chemical Process Piping
- Industrial and Municipal Pipe Runs
- Renovation and New Construction Plumbing Projects
Why Spears?
Spears PVC fittings like the 856-100 Van Stone Flange Spigot are built from durable PVC material to deliver corrosion-resistant, long-lasting performance in pressure piping systems. The CL150-rated design and Van Stone spigot configuration give installers a dependable, code-conscious way to transition PVC pipe into flanged equipment connections without introducing metallic corrosion points into the system.
Manufacturer Resources
PVC Schedule 80 Fittings, Unions,Flanges & Tank Adapters"
Product Specs
- Department:
- Plumbing
- Product Group:
- PVC & CPVC Fittings
- Product Subgroup:
- Fittings
- Product Type:
- General Fitting
- Product Size:
- 10
Spears 856-100 – Frequently Asked Questions
1) What is a Van Stone flange and why use the Spears 856-100 instead of a one-piece PVC flange?
A Van Stone flange splits the job into two parts: a molded PVC hub that bonds to the pipe and a free-floating flange ring that rotates around it. On the Spears 856-100, that floating ring means you can spin the bolt holes into alignment with the mating flange after the hub is set, instead of fighting rotation in a solvent-welded joint. One-piece flanges fix the bolt pattern the moment the cement grabs, so on a long pipe run or a tight equipment tie-in the Van Stone style saves you the rework.
2) Will the Spears 856-100 bolt up to an ANSI Class 150 valve or pump flange?
Yes. The 856-100 is rated Class 150 and is built to transition PVC pipe into ANSI Class 150 flanged components such as valves, pumps, and process equipment. Match it against a 10 inch Class 150 mating flange and use a full-face gasket, which is standard practice with plastic flanges to avoid cracking the face under bolt load.
3) Does the Spears 856-100 10 inch flange glue onto the pipe or thread on?
It is a spigot end, so it joins by solvent weld. The spigot slips into the socket of a 10 inch PVC pipe or fitting and is cemented in place. There are no threads on this one, so if your run terminates in a threaded connection you need a socket x thread adapter ahead of it.
4) What size pipe does the Spears 856-100 fit?
It is a 10 inch nominal fitting, sized for large-diameter PVC pressure piping. The spigot is cut to 10 inch PVC dimensions, so it seats into a 10 inch socket fitting or pipe bell.
5) Can I use a PVC Van Stone flange instead of a metal flange on a chemical process line?
That is exactly the case it is built for. PVC resists corrosion, rust, and chemical attack that eats metallic flanges, so the 856-100 lets you land a flanged connection in water or chemical process piping without introducing a metal corrosion point into an otherwise plastic system. It is also far lighter than a 10 inch metal flange, which matters when you are setting it overhead or by hand.
6) Do I get the flange ring with the Spears 856-100 or do I order it separately?
The 856-100 is the complete Van Stone flange spigot: the PVC hub with the spigot end plus the floating flange ring. What is not included is the gasket and the bolt set for the joint, so add those to your order along with solvent cement and primer sized for 10 inch work.
7) Is the 856-100 the right part to flange a pipe that already has a socket on the end?
Yes, and that is the difference between the spigot version and a socket version. The 856-100 has a spigot, so it goes into a socket. If the run you are tying into ends with a plain pipe end instead, you want the socket-style Van Stone flange in the same 10 inch size, not this one.
How fast can I get the Spears 856-100 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Spears 856-100 come with a warranty?
Absolutely. The Spears 856-100 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Spears 856-100?
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