Spears 437863 Schedule 40 PVC ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$31.00
Spears 437863 Schedule 40 PVC Coupling

Spears 437863 Schedule 40 PVC Coupling

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Model: 429-005

In Stock (leaves warehouse same day if ordered before 3pm ET)

$31.00
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Spears 437863 Schedule 80 PVC Coupling

The Spears 437863 Schedule 80 PVC Coupling is a rigid PVC fitting engineered to join two lengths of Schedule 80 PVC pipe into a strong, leak-resistant inline connection. Molded from durable PVC for long-term performance in pressure piping systems, this coupling is available in Socket and FPT end connections across trade sizes including 1/2", 3/4", 1", 1-1/4", 1-1/2", 2", 2-1/2", 3", 4", 5", 6", and 10 x 4", delivering dependable joints for industrial, commercial, and municipal piping applications. Packaged for efficient distribution, stocking, and job-site handling.

Key Features

  • Schedule 80 PVC Construction: Heavier-wall Schedule 80 PVC body delivers added strength and pressure resistance compared to Schedule 40 fittings, suiting demanding piping runs.
  • Corrosion-Resistant Material: PVC construction resists corrosion, chemical attack, and degradation, making it well suited for water, chemical, and industrial process piping.
  • Straight Coupling Design: Provides an inline connection point for extending or repairing runs of Schedule 80 PVC pipe without changing direction.
  • Consistent Fit and Finish: Precision-molded bores promote proper alignment and a reliable, secure connection during installation.
  • Lightweight, Easy-to-Handle Fitting: PVC construction keeps the coupling lightweight relative to metallic alternatives, simplifying handling and installation.
  • Multiple End Connections and Sizes: Offered in Socket connections (1/2", 3/4", 1", 1-1/4", 1-1/2", 2", 2-1/2", 3", 4", 5", 6", 10 x 4") and FPT connections (1", 2") to match a wide range of piping configurations.

Technical Specifications

  • Department: Electrical
  • Product Material: PVC
  • Product Group: PVC & CPVC Fittings
  • Product Subgroup: Pipe Fittings

Typical Applications

  • Schedule 80 PVC Pressure Piping Systems
  • Industrial and Chemical Process Piping
  • Municipal and Commercial Water Systems
  • Pipe Run Extensions and Repairs
  • New Construction and Retrofit Piping Projects

Why Spears 437863?

Spears Schedule 80 PVC fittings are built from durable PVC material to deliver dependable, corrosion-resistant performance in demanding piping systems. The heavier-wall Schedule 80 construction and wide range of Socket and FPT connection sizes make this coupling a practical choice for contractors and facility teams that need a reliable, long-lasting joint. Choose Spears for consistent fitting quality across your PVC piping projects.

Product Specs

Product Type:
Coupling
Department:
Plumbing
Product Material:
PVC
Product Group:
PVC & CPVC Fittings
Product Subgroup:
Pipe Fittings

Spears 429-005 – Frequently Asked Questions

1) Will a Spears Schedule 80 PVC coupling work on Schedule 40 PVC pipe?
Yes, as long as you buy the right size. Schedule 80 and Schedule 40 PVC share the same outside diameter at a given trade size, so a Spears Schedule 80 socket coupling solvent welds onto Sch 40 pipe of the same nominal size. The difference is wall thickness: the Sch 80 fitting has a heavier wall, so the joint is only as strong as the weaker Sch 40 pipe it is bonded to. Use the same PVC solvent cement and primer either way.
2) What is the difference between the socket and FPT versions of the Spears 437863 coupling?
Socket couplings are solvent welded: the pipe slips into the smooth bore and is bonded with PVC cement, giving a permanent inline joint. The FPT version has female pipe threads and takes a male threaded pipe end or a male adapter, so it can be broken apart later. Socket runs 1/2 inch through 6 inch plus a 10 x 4 inch, while FPT is offered in 1 inch and 2 inch only. Threaded PVC joints carry a lower pressure rating than solvent welded ones, so use socket wherever the run allows it.
3) Can I use this PVC coupling on a hot water or steam line?
No. PVC is not for hot water or steam service. These Spears couplings are molded PVC for cold-water pressure piping, industrial and chemical process lines, and municipal and commercial water systems. For elevated temperatures you want CPVC fittings instead, which Spears also makes in Schedule 80.
4) What sizes does the Spears Schedule 80 PVC coupling come in?
Socket couplings run 1/2, 3/4, 1, 1-1/4, 1-1/2, 2, 2-1/2, 3, 4, 5 and 6 inch, plus a 10 x 4 inch. FPT is available in 1 inch and 2 inch. If you need a straight inline joint anywhere on a Sch 80 run from half inch branch lines up to 6 inch mains, it is covered.
5) What is the 10 x 4 inch coupling for?
That is the reducing version, Spears part 429624, with a 10 inch socket on one end and a 4 inch socket on the other. It ties a 4 inch branch or run directly into 10 inch Schedule 80 pipe without a separate bushing. Every other size on the line is a straight same-size coupling.
6) Is this coupling suitable for chemical process piping?
Yes. The PVC body resists corrosion and chemical attack, which is why Schedule 80 PVC is common in industrial and chemical process lines as well as municipal water. The heavier Schedule 80 wall gives more strength than a Schedule 40 fitting on the same run. Always match the chemical and the operating temperature to a PVC compatibility chart before committing the system.
7) Which Spears part number do I order for a 2 inch Schedule 80 PVC coupling?
Two options at 2 inch: part 829-020 for the socket (solvent weld) coupling and part 830-020 for the FPT threaded version. Pick socket for a permanent bonded joint in the run, FPT if you need a threaded takedown point.
8) Do I need anything besides the coupling to make up the joint?
The coupling is the fitting only. For socket versions you supply PVC primer and solvent cement rated for Schedule 80, and no gasket or O-ring is involved. The FPT versions need PTFE tape or a thread sealant approved for plastic threads, and they should be hand tightened plus a turn or two by wrench only, since over-torquing splits a PVC female thread.
9) Can I use this coupling to repair a break in an existing PVC line?
It works for repairs where you can move the pipe. A straight coupling needs the pipe ends to slide into the socket, so on a rigid run pinned at both ends you cannot get a standard coupling in without cutting slack or using a repair coupling. Cut the damaged section out clean and square, deburr, dry fit, then cement. For extending a run or joining new pipe there is no issue.
How fast can I get the Spears 429-005 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 429-005 come with a warranty?
Absolutely. The Spears 429-005 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 429-005?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Spears 429-005 from ZenSupply?
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