Spears Schedule 40 PVC Union, ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$4.01
Spears Schedule 40 PVC Union, Socket Connection, Buna-N O-Ring

Spears Schedule 40 PVC Union, Socket Connection, Buna-N O-Ring

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Model: 457-005

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

$4.01
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Spears Schedule 40 PVC Union, Socket Connection, Buna-N O-Ring

The Spears PVC Union is a Schedule 40 socket (SOC) pattern union with a Buna-N O-ring seal, built to give plumbers and pipefitters a reliable disconnect point in PVC pressure piping runs. This union is available in 1/2", 3/4", and 1" nominal pipe sizes, so contractors can standardize the same serviceable fitting across common branch and main-line runs. Unions like this one allow a section of pipe, a valve, or an in-line fitting to be removed for service or replacement without having to cut and re-glue the surrounding pipe, which is a major time saver on rough-in and retrofit work alike. Constructed in PVC and rated for Schedule 40 service, this union solvent-welds into standard PVC pipe on both ends and seals at the center nut with the Buna-N O-ring, giving a dependable, serviceable joint in water and compressed-air lines where PVC is the specified material. This is a trade rough-in component intended for behind-the-wall, under-slab, or exposed mechanical-room installation by a licensed plumber or contractor, not a decorative or exposed fixture.

Key Features

  • Trade Size Range: Available in 1/2", 3/4", and 1" nominal pipe sizes for standard Schedule 40 PVC pipe runs.
  • Durable Construction: Molded PVC body provides corrosion resistance suitable for PVC pressure-piping systems.
  • Socket (SOC) Connection: Solvent-weld socket ends on both sides of the union for a permanent, leak-tight bond to PVC pipe.
  • Schedule 40 Rated: Matches standard Schedule 40 PVC pipe wall thickness for compatible fit-up in common pressure piping systems.
  • Buna-N O-Ring Seal: Center-nut O-ring seal provides a serviceable, reusable disconnect point for maintenance access without cutting pipe.
  • Three-Piece Union Design: Allows the joint to be broken and reassembled repeatedly for valve, fitting, or equipment servicing.

Technical Specifications

  • Trade Size Range: 1/2" - 1"
  • Material: PVC
  • Connection Type: Socket (SOC)
  • Seal Material: Buna-N O-ring
  • Schedule: Schedule 40

Typical Applications

  • Residential and Commercial Rough-In PVC Piping
  • Valve and Equipment Service Disconnect Points
  • PVC Pressure Piping Repair and Maintenance
  • New Construction and Retrofit Plumbing Installations
  • Mechanical Room and Under-Slab PVC Runs

Why Spears?

Spears is a recognized manufacturer of PVC and thermoplastic piping products for plumbing and industrial piping systems, and this union line reflects that focus with a Schedule 40 PVC body, solvent-weld socket ends, and a Buna-N O-ring seal built for repeated serviceability across the 1/2", 3/4", and 1" size range. For contractors standardizing on PVC pressure piping, a dedicated union fitting like this one simplifies future maintenance by eliminating the need to cut pipe for every valve or fitting replacement. Stock the Spears PVC union alongside your other Schedule 40 PVC fittings for a consistent, compatible rough-in piping system across every trade size you run.

Manufacturer Resources

Product Specs

Product Type:
Union
Connection Type:
Solvent Weld
Configuration:
Buna-N O-Ring Seal
Department:
Plumbing
Product Group:
PVC & CPVC Fittings
Product Subgroup:
Pipe Fittings
list_batch:
SPR-20261001
Product Material:
PVC

Spears 457-005 – Frequently Asked Questions

1) What sizes does the Spears 457 Series Schedule 40 PVC socket union come in?
Four trade sizes of the Spears 457 Series PVC union are offered: 1/2 inch (457-005), 3/4 inch (457-007), 1 inch (457-010), and 1-1/4 inch (457-125). All four are socket (solvent weld) on both ends, so you order by the nominal pipe size of the run you are breaking into.
2) Do the ends of this PVC union glue on, or does it thread onto the pipe?
Both ends are solvent weld sockets. You prime and cement them onto standard Schedule 40 PVC pipe just like any other socket fitting. There is no pipe thread on the ends, so if your run terminates in male or female NPT you need a threaded-pattern union or a transition adapter instead.
3) Why use a union here instead of just gluing in a coupling?
A coupling is permanent. The Spears 457 union is a three-piece fitting with a center nut, so the joint can be broken and remade repeatedly without cutting pipe. Put one on each side of a valve, pump, filter, or in-line fitting and that component comes out for service in minutes. Use a coupling where you never intend to disassemble, and a union where you do.
4) What is the O-ring in this Spears PVC union made of, and what does that mean for what I can run through it?
The seal at the center nut is Buna-N (nitrile). The union is specified for PVC pressure piping, including water and compressed air lines where PVC is the specified material. Buna-N is the seal you replace if the joint ever weeps, which is part of why the union stays serviceable rather than becoming a cut-out repair.
5) Will a Schedule 40 PVC union fit Schedule 80 pipe?
The socket on this union is sized for the pipe OD, and Schedule 40 and Schedule 80 PVC share the same outside diameter at a given trade size, so it will physically socket. The union body itself is Schedule 40 PVC, so it becomes the lower-rated element in a Schedule 80 run. On a system specified as Schedule 80, match it with a Schedule 80 union.
6) Is this union meant to be installed in a finished, visible location?
No. It is a rough-in component for behind-the-wall, under-slab, or exposed mechanical-room work, installed by a licensed plumber or contractor. It is not a decorative or trim fitting. Where a union sits under slab, remember it is a service point you will not be able to reach again, so most installers keep unions at valves, equipment, and accessible chases.
7) How many unions should a property maintenance crew stock for a PVC system?
Standardizing on one union pattern across 1/2, 3/4, 1, and 1-1/4 inch covers typical branch and main-line runs, which is the full size spread of the Spears 457 Series. Carrying two per common size lets a tech isolate and pull a valve or equipment item on the first trip rather than cutting and re-gluing pipe.
How fast can I get the Spears 457-005 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 457-005 come with a warranty?
Absolutely. The Spears 457-005 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 457-005?
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 457-005 from ZenSupply?
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