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Spears Schedule 40 PVC Reducer Bushing, Spigot Connection
Model: SPR-437101
Spears Schedule 40 PVC Reducer Bushing, Spigot ConnectionThe Spears Schedule 40 PVC Reducer Bushing is engineered to transition between two different pipe diameters within a Schedule 40 PVC piping...
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Spears 438-101 3/4" x 1/2" PVC Reducing Bushing, SPGxFPT, Schedule 40
The Spears 438-101 is a Schedule 40 PVC reducing bushing engineered for rough-in pressure piping applications where a transition from a 3/4" line down to a 1/2" branch or fixture connection is required. Configured SPGxFPT (spigot by female pipe thread), this bushing inserts directly into a 3/4" PVC fitting or coupling socket on one end and accepts a 1/2" male-threaded (MIP) fitting, valve, or appliance connection on the other. Molded from PVC in Schedule 40 wall thickness, it's built for solvent-welded pressure systems typical of irrigation, water service, and general plumbing rough-in work behind the wall or underground.
Key Features
- Trade Size: 3/4" x 1/2" reduction, sized for transitioning larger supply lines down to smaller branch connections.
- Durable Construction: Molded PVC body resists corrosion common to steel or brass fittings in buried or wet rough-in locations.
- Connection Type: Spigot (SPG) end solvent-welds into a 3/4" PVC fitting socket; female pipe thread (FPT) end accepts a 1/2" male-threaded fitting, valve, or appliance.
- Schedule 40: Standard Schedule 40 PVC wall thickness for pressure-rated reducing bushing applications.
- Compact Reducer Design: Single-piece bushing eliminates the need for a coupling-plus-adapter combination, saving space in tight rough-in cavities.
Technical Specifications
- Trade Size: 3/4" x 1/2"
- Material: PVC
- Connection: Spigot x FPT (SPGxFPT)
- Schedule: Schedule 40
- Model: 438-101
Typical Applications
- Residential and Commercial Rough-In Plumbing
- PVC Pressure Pipe Size Transitions
- Irrigation and Water Service Lines
- Threaded Valve and Appliance Hookups
- New Construction and Repair/Retrofit Piping
Why Spears?
Spears is a longstanding manufacturer of PVC and CPVC pipe, fittings, and valves relied on by plumbing and irrigation professionals for consistent Schedule 40 dimensional accuracy and dependable solvent-weld and threaded connections. The 438-101 reducing bushing delivers a straightforward, single-fitting solution for stepping down pipe size without adding unnecessary joints to a pressure system.
Manufacturer Resources
Product Specs
- list_batch:
- SPR-20261001
- Product Type:
- Reducing Bushing
- Connection Type:
- Spigot x FPT
- Schedule:
- Schedule 40
- Department:
- Plumbing
- Product Group:
- Plumbing Fittings
- Product Subgroup:
- Bushings
- Product Material:
- PVC
- Product Size:
- 3/4" x 1/2"
Spears 438-101 – Frequently Asked Questions
1) Does the Spears 438-101 bushing glue into a 3/4 inch pipe or into a 3/4 inch fitting socket?
Into the fitting socket. The spigot end of the 438-101 is sized like 3/4 inch pipe OD, so it solvent-welds into the socket of a 3/4 inch PVC fitting, coupling, valve or tee. It does not accept pipe inside it. If what you have in the wall is a cut length of 3/4 inch pipe with nothing on it, you need a socket-end reducing adapter instead, or add a coupling first and then bush down.
2) What threads onto the 1/2 inch end of the Spears 438-101 reducing bushing?
The 1/2 inch end is female pipe thread, so it takes a 1/2 inch male NPT nipple, valve, hose bib, appliance connector or riser. Use thread sealant or PTFE tape on the male threads and hand-tighten plus one to two turns with a wrench; PVC threads strip and crack if you reef on them.
3) Can I use a PVC reducing bushing on a pressurized water line?
Yes, within its limits. The 438-101 is Schedule 40 PVC built for solvent-welded pressure systems, which is the usual choice for irrigation, water service and general cold water rough-in. It is not for hot water or distribution hot lines; CPVC fittings handle that. Also keep the threaded side out of direct abuse, since the threaded joint is always the weaker half of a bushing like this.
4) Reducing bushing or reducing coupling for stepping 3/4 inch down to 1/2 inch?
Use the bushing when you already have a 3/4 inch socket in place and need to step down inside it. The 438-101 drops into that socket and gives you a 1/2 inch female thread in one part, with no extra joint and no added length, which matters in a packed stud bay or valve box. A reducing coupling or bushing with a socket outlet is the one to use when you are continuing in glued 1/2 inch pipe rather than landing on a threaded valve or appliance.
5) Is this PVC bushing OK to bury or install behind a wall?
That is exactly what it is for. The molded PVC body will not corrode the way steel or brass does in buried or constantly wet rough-in locations, and the 438-101 is listed for residential and commercial rough-in, irrigation and water service lines, new construction and retrofit repairs. Make sure the solvent-weld joint is fully cured before you backfill or pressurize.
6) What is the exact Spears part number for a 3/4 x 1/2 inch SPGxFPT Schedule 40 PVC bushing?
Spears 438-101. The 438 series is the reducing bushing with a spigot inlet and female pipe thread outlet, and the -101 suffix is the 3/4 inch by 1/2 inch size in Schedule 40 PVC.
7) Will the 438-101 work for standardizing 1/2 inch fixture takeoffs off a 3/4 inch PVC main across a property?
It handles that transition in one part, which is why it is common on repeat irrigation and fixture takeoffs: 3/4 inch socket in, 1/2 inch female thread out, no coupling plus adapter stack to keep in the truck. Every unit is the single 438-101 configuration, so there are no finish or variant choices to get wrong when you reorder for the next building.
How fast can I get the Spears 438-101 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 438-101 come with a warranty?
Absolutely. The Spears 438-101 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 438-101?
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