Bushing, Spigot x FPT PVC Schedule 40 3" X 1/2" (438-333)
$3.52
This 3" x 1/2" Schedule 40 PVC Bushing (Spigot x FPT) provides a compact, inline solution for reducing a 3" socket-end fitting down to a 1/2" female-threaded connection in solvent-cement PVC piping systems. Constructed in white Schedule 40 PVC, it offers reliable performance in commercial plumbing, irrigation, and light industrial installations where a corrosion-resistant, large-to-small transition is required at a threaded outlet or instrumentation tap.
The 3" spigot (male plain end) is sized to insert directly into the hub of any standard 3" socket-end fitting — coupling, tee, elbow, or valve body — and is solvent-cemented in place to form a permanent, leak-free joint. The 1/2" FPT interior accepts any standard 1/2" male NPT-threaded fitting, nipple, gauge, or instrument connection, making this bushing a practical solution for adding a small-diameter threaded tap or branch outlet to a large-diameter PVC socket assembly without additional transition hardware.
Rated to 260 psi at 73°F (governed by the 3" spigot end), this bushing is suited for standard commercial and light industrial water distribution service. Its PVC composition provides excellent resistance to corrosion, scale, chlorinated water, and a broad range of chemical exposures, making it a long-lasting alternative to metal reducing bushings in moisture-prone or chemically active environments. NSF/ANSI 61 listing confirms suitability for potable water contact.
Apply solvent cement to the spigot exterior and the interior of the receiving socket per ASTM D2564 procedures, inserting fully and holding briefly for initial set. On the FPT end, use a quality pipe thread sealant or PTFE tape on all male NPT threads before engagement. Avoid over-torquing the threaded connection — PVC threads require hand-tight plus one to two turns; excessive force can crack the fitting. Derate pressure ratings for elevated temperatures per published derating curves.
Specifications:
| Attribute | Detail |
|---|---|
| Part Number | 438-333 |
| Fitting Type | Bushing |
| Connection Type | Spigot x FPT (Male Plain End × Female Pipe Thread) |
| Size | 3" x 1/2" |
| Schedule / Series | Schedule 40 |
| Material | PVC (Polyvinyl Chloride) |
| Color | White |
| Pressure Rating | 260 psi @ 73°F (governed by 3" spigot end) |
| ASTM Standard | D2466 (spigot end), D2464 (FPT end) |
| NSF/ANSI | NSF/ANSI 61 Listed |
| Thread Standard | NPT (National Pipe Taper) |
| Joint Method | Solvent Cement — spigot end (ASTM D2564); Thread Sealant — FPT end |
| Temperature Range | Up to 140°F (derate pressure for elevated temps) |
Industries & Applications:
- Industrial Process Piping — Adds a 1/2" threaded instrumentation tap, drain port, or gauge connection to a large-diameter 3" PVC socket assembly in chemical processing, water treatment, and manufacturing systems
- Commercial Plumbing — Reduces large-diameter socket tees or crosses to 1/2" threaded branch outlets for fixture supply, pressure gauge taps, or zone control valve connections in pressurized water systems
- Irrigation & Water Distribution — Transitions 3" mainline socket fittings to 1/2" threaded outlets for drip emitter feeds, solenoid valve connections, and small-diameter lateral branches in agricultural and municipal irrigation systems
- Chemical Handling — Provides a corrosion-resistant large-to-small transition in systems conveying acids, caustics, fertilizer solutions, and other fluids incompatible with metal fittings
- Water Treatment & Aquaculture — Used at filter housings, tank manifolds, and treatment equipment assemblies where a threaded small-diameter tap is needed on a large-diameter PVC socket run
- HVAC & Mechanical Systems — Connects 1/2" threaded sensors, gauges, or drain valves to 3" socket-end PVC assemblies in cooling tower, chilled water, and chemically treated water systems
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Bushing, Spigot x FPT PVC Schedule 40 3" X 1/2" (438-333)
This 3" x 1/2" Schedule 40 PVC Bushing (Spigot x FPT) provides a compact, inline solution for reducing a 3" socket-end fitting down to a 1/2" female-threaded connection in solvent-cement PVC piping systems. Constructed in white Schedule 40 PVC, it offers reliable performance in commercial plumbing, irrigation, and light industrial installations where a corrosion-resistant, large-to-small transition is required at a threaded outlet or instrumentation tap.
The 3" spigot (male plain end) is sized to insert directly into the hub of any standard 3" socket-end fitting — coupling, tee, elbow, or valve body — and is solvent-cemented in place to form a permanent, leak-free joint. The 1/2" FPT interior accepts any standard 1/2" male NPT-threaded fitting, nipple, gauge, or instrument connection, making this bushing a practical solution for adding a small-diameter threaded tap or branch outlet to a large-diameter PVC socket assembly without additional transition hardware.
Rated to 260 psi at 73°F (governed by the 3" spigot end), this bushing is suited for standard commercial and light industrial water distribution service. Its PVC composition provides excellent resistance to corrosion, scale, chlorinated water, and a broad range of chemical exposures, making it a long-lasting alternative to metal reducing bushings in moisture-prone or chemically active environments. NSF/ANSI 61 listing confirms suitability for potable water contact.
Apply solvent cement to the spigot exterior and the interior of the receiving socket per ASTM D2564 procedures, inserting fully and holding briefly for initial set. On the FPT end, use a quality pipe thread sealant or PTFE tape on all male NPT threads before engagement. Avoid over-torquing the threaded connection — PVC threads require hand-tight plus one to two turns; excessive force can crack the fitting. Derate pressure ratings for elevated temperatures per published derating curves.
Specifications:
| Attribute | Detail |
|---|---|
| Part Number | 438-333 |
| Fitting Type | Bushing |
| Connection Type | Spigot x FPT (Male Plain End × Female Pipe Thread) |
| Size | 3" x 1/2" |
| Schedule / Series | Schedule 40 |
| Material | PVC (Polyvinyl Chloride) |
| Color | White |
| Pressure Rating | 260 psi @ 73°F (governed by 3" spigot end) |
| ASTM Standard | D2466 (spigot end), D2464 (FPT end) |
| NSF/ANSI | NSF/ANSI 61 Listed |
| Thread Standard | NPT (National Pipe Taper) |
| Joint Method | Solvent Cement — spigot end (ASTM D2564); Thread Sealant — FPT end |
| Temperature Range | Up to 140°F (derate pressure for elevated temps) |
Industries & Applications:
- Industrial Process Piping — Adds a 1/2" threaded instrumentation tap, drain port, or gauge connection to a large-diameter 3" PVC socket assembly in chemical processing, water treatment, and manufacturing systems
- Commercial Plumbing — Reduces large-diameter socket tees or crosses to 1/2" threaded branch outlets for fixture supply, pressure gauge taps, or zone control valve connections in pressurized water systems
- Irrigation & Water Distribution — Transitions 3" mainline socket fittings to 1/2" threaded outlets for drip emitter feeds, solenoid valve connections, and small-diameter lateral branches in agricultural and municipal irrigation systems
- Chemical Handling — Provides a corrosion-resistant large-to-small transition in systems conveying acids, caustics, fertilizer solutions, and other fluids incompatible with metal fittings
- Water Treatment & Aquaculture — Used at filter housings, tank manifolds, and treatment equipment assemblies where a threaded small-diameter tap is needed on a large-diameter PVC socket run
- HVAC & Mechanical Systems — Connects 1/2" threaded sensors, gauges, or drain valves to 3" socket-end PVC assemblies in cooling tower, chilled water, and chemically treated water systems
- Part #:
- 438-333
- Product Family:
- Sch 40 PVC
- Size:
- 3"
