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Spears PVC Schedule 40 Socket Coupling
The Spears PVC Schedule 40 Socket Coupling is a solvent-weld fitting engineered to join two lengths of straight PVC pipe into a single, leak-tight run. Manufactured from durable PVC in Schedule 40 wall thickness, this coupling uses socket (SOC) connections on both ends for a reliable, permanent solvent-cemented joint. It is available across the family in 1/2", 1", 1-1/4", 2", and 4" trade sizes, making it a versatile in-line fitting for pressure piping systems of varying diameters, from small branch lines to larger main runs.
Key Features
- Trade Size Range: Available in 1/2", 1", 1-1/4", 2", and 4" to match a wide range of PVC pipe diameters used in residential, commercial, and industrial piping runs.
- Durable PVC Construction: PVC material resists corrosion, rust, and chemical degradation, providing long service life in buried, exposed, or wet-location piping systems.
- Socket (SOC) Connection: Solvent-weld socket ends on both sides create a secure, permanent, leak-resistant joint when properly primed and cemented.
- Schedule 40 Rating: Schedule 40 wall thickness delivers dependable mechanical strength for pressure piping applications.
- Straight Coupling Design: Joins two straight pipe runs in-line without changing direction, simplifying layout, extensions, and repairs.
- Lightweight and Easy to Install: PVC construction keeps the coupling lightweight, easing handling and installation compared to metallic alternatives.
- Consistent Sizing Across the Family: Every size in the 1/2" through 4" range shares the same Schedule 40 socket design, simplifying specification across a project.
Technical Specifications
- Product Type: Conduit Coupling
- Product Size: 1/2", 1", 1-1/4", 2", 4"
- Material: PVC
- Schedule: Schedule 40
- Connection: Socket (SOC)
Typical Applications
- PVC Pressure Piping Systems
- Water Distribution and Supply Lines
- Irrigation System Installations
- Industrial Fluid Handling Piping
- Underground and Buried Piping Runs
- New Construction, Repair, and Retrofit Piping Projects
Why Spears?
Spears is a recognized manufacturer of PVC and CPVC piping fittings, and this Schedule 40 Socket Coupling reflects that standard with solid PVC construction and precise socket connections for a dependable solvent-weld joint. Choosing this coupling across its full 1/2" through 4" size range gives installers and contractors a consistent, corrosion-resistant fitting for straight-run pipe connections in pressure piping systems, whether for a single repair or a full system build-out. Standardizing on one coupling design across multiple trade sizes simplifies purchasing, inventory, and on-site installation for plumbing and piping professionals.
Manufacturer Resources
Schedule 40 Dimensions
Product Specs
- Product Type:
- Coupling
- Department:
- Plumbing
- Product Group:
- Plumbing Fittings
- Product Subgroup:
- Couplings
- list_batch:
- SPR-20260918
- Product Material:
- PVC
- Connection Type:
- Socket
Spears 429-020 – Frequently Asked Questions
1) Is this coupling solvent weld or threaded?
Both ends are socket (SOC) connections, so it is a solvent-weld fitting. You prime and cement it to the pipe OD, and the joint is permanent. If you need a connection you can take apart later, a coupling is the wrong fitting, look at a threaded union instead.
2) Will a Schedule 40 socket coupling fit Schedule 80 PVC pipe of the same size?
Yes. Socket fittings seat on the pipe outside diameter, and Schedule 40 and Schedule 80 PVC of the same trade size share the same OD, the difference is wall thickness. The coupling itself is Schedule 40 wall, so on a Schedule 80 system the coupling becomes the lower-rated component in that run.
3) Can I use this PVC coupling on a hot water line?
No. This is PVC, not CPVC, so it is for cold-water and ambient-temperature pressure piping, water distribution, irrigation, and industrial fluid handling. For hot water service you need a CPVC coupling instead.
4) What sizes does the Spears PVC Schedule 40 socket coupling come in?
Six trade sizes are offered: 1/2 inch (829-005), 3/4 inch (429-007), 1 inch (829-010), 1-1/4 inch (829-012), 2 inch (429-020), and 4 inch (429-040). All share the same straight socket-by-socket Schedule 40 design, so you can standardize one coupling style across a job and just change size.
5) Can this coupling be buried underground?
Yes. PVC resists corrosion, rust, and chemical attack, and the coupling is listed for buried, exposed, and wet-location piping runs. Nothing in a solvent-welded PVC joint rusts the way a metallic coupling does in wet soil.
6) Do I need a reducing coupling to join two different pipe sizes?
Yes, this is a straight coupling, socket to socket, same size on both ends. It joins two runs of the same diameter in line without a direction change. Going from one diameter to another needs a reducing coupling or a reducer bushing.
7) Is a PVC coupling the right fitting for repairing a broken pipe in an existing run?
It works for repairs where you can get axial movement, cut out the damaged section, cement in a new length, and use a coupling at each end. On a rigid run with no flex you cannot slide a standard socket coupling over both ends, that job calls for a repair coupling or union. Spears straight couplings are listed for repair and retrofit piping work as well as new construction.
8) Is this coupling suitable for pressure piping or only drainage?
Schedule 40 wall thickness is intended for pressure piping, and the typical applications are water distribution and supply, irrigation, and industrial fluid handling. It will work in a non-pressure drain line too, but it is specified as a pressure fitting.
9) What do I need besides the coupling to make up the joint?
Primer and PVC solvent cement, neither is included. The socket ends only seal once properly primed and cemented. Cut the pipe square, deburr, dry fit, then prime and cement both the socket and the pipe OD.
How fast can I get the Spears 429-020 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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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 429-020 come with a warranty?
Absolutely. The Spears 429-020 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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