Coupling, Slip x Slip PVC Schedule 40 4" x 3/4" (429-416)
$16.69
The 429-416 is a 4" x 3/4" PVC Schedule 40 reducer coupling in a slip x slip (socket x socket) configuration. Both ends accept solvent-welded plain-end pipe — a 4" socket on the inlet side and a 3/4" socket on the outlet — making this a single-fitting solution for joining two pipe sizes in a continuous run without threading or additional adapters.
The span from 4" down to 3/4" is an unusually large reduction for a coupling fitting, and that's precisely what makes the 429-416 a specialty item. Applications that require this kind of dramatic step-down in a single solvent-weld fitting are found in systems where a large-diameter supply or distribution header needs to feed a significantly smaller branch line, metering port, or instrumentation connection directly off the main run.
Manufactured from virgin PVC compound to Schedule 40 dimensional standards, this coupling offers solid pressure ratings suitable for standard commercial and light industrial service. The all-slip configuration creates a fully solvent-welded, permanent joint on both ends — providing a leak-free connection with no threads to corrode, strip, or loosen over time.
Specifications:
| Attribute | Detail |
|---|---|
| Part Number | 429-416 |
| Material | PVC (Polyvinyl Chloride) |
| Schedule / Pressure Class | Schedule 40 |
| End Connections | Slip (Socket) x Slip (Socket) |
| Fitting Type | Reducer Coupling |
| Inlet Size | 4" |
| Outlet Size | 3/4" |
| Color | White |
| Applicable Standard | ASTM D2466 |
| NSF Listed | NSF 61 (potable water) |
| Temperature Range | Up to 140°F (60°C) at rated pressure |
| Manufacturer | Spears Manufacturing |
Industries & Applications:
- Industrial Process Piping — Tapping a large-diameter PVC header down to a small-bore branch line or sampling port in a single fitting
- Water Treatment & Municipal — Reducing a 4" distribution main to a 3/4" service connection or chemical injection point
- Irrigation Systems — Feeding a 3/4" drip or spray zone directly off a 4" mainline where a compact, solvent-weld connection is preferred
- Chemical Processing — Stepping down a large PVC supply header to a small metering or dosing line without threaded transitions
- Agricultural Systems — Connecting small-bore fertigation or chemical injection equipment to a 4" irrigation main
- Commercial Plumbing — Installing specialty service or instrumentation taps where a large-to-small slip reduction is required in a single permanent fitting
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Coupling, Slip x Slip PVC Schedule 40 4" x 3/4" (429-416)
The 429-416 is a 4" x 3/4" PVC Schedule 40 reducer coupling in a slip x slip (socket x socket) configuration. Both ends accept solvent-welded plain-end pipe — a 4" socket on the inlet side and a 3/4" socket on the outlet — making this a single-fitting solution for joining two pipe sizes in a continuous run without threading or additional adapters.
The span from 4" down to 3/4" is an unusually large reduction for a coupling fitting, and that's precisely what makes the 429-416 a specialty item. Applications that require this kind of dramatic step-down in a single solvent-weld fitting are found in systems where a large-diameter supply or distribution header needs to feed a significantly smaller branch line, metering port, or instrumentation connection directly off the main run.
Manufactured from virgin PVC compound to Schedule 40 dimensional standards, this coupling offers solid pressure ratings suitable for standard commercial and light industrial service. The all-slip configuration creates a fully solvent-welded, permanent joint on both ends — providing a leak-free connection with no threads to corrode, strip, or loosen over time.
Specifications:
| Attribute | Detail |
|---|---|
| Part Number | 429-416 |
| Material | PVC (Polyvinyl Chloride) |
| Schedule / Pressure Class | Schedule 40 |
| End Connections | Slip (Socket) x Slip (Socket) |
| Fitting Type | Reducer Coupling |
| Inlet Size | 4" |
| Outlet Size | 3/4" |
| Color | White |
| Applicable Standard | ASTM D2466 |
| NSF Listed | NSF 61 (potable water) |
| Temperature Range | Up to 140°F (60°C) at rated pressure |
| Manufacturer | Spears Manufacturing |
Industries & Applications:
- Industrial Process Piping — Tapping a large-diameter PVC header down to a small-bore branch line or sampling port in a single fitting
- Water Treatment & Municipal — Reducing a 4" distribution main to a 3/4" service connection or chemical injection point
- Irrigation Systems — Feeding a 3/4" drip or spray zone directly off a 4" mainline where a compact, solvent-weld connection is preferred
- Chemical Processing — Stepping down a large PVC supply header to a small metering or dosing line without threaded transitions
- Agricultural Systems — Connecting small-bore fertigation or chemical injection equipment to a 4" irrigation main
- Commercial Plumbing — Installing specialty service or instrumentation taps where a large-to-small slip reduction is required in a single permanent fitting
- Part #:
- 429-416
- Product Family:
- Sch 40 PVC
- Carton Qty:
- 5
- Pallet Qty:
- 0
- Size:
- 4"
