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The Schedule 40 PVC Reducer Bushing (Spigot x Slip) is the space-saving standard for reducing pipe size within a manifold or fitting assembly. Unlike a large reducer coupling that sits between pipes, this bushing inserts completely inside the socket of a larger fitting (such as a PVC Tee or Elbow), allowing you to step down to a smaller line size without adding extra length to your system.
These flush-fitting components are essential irrigation fittings for creating zoned manifolds where a large main header needs to branch off into smaller zone lines. Manufactured from durable white Schedule 40 PVC, they require a solvent weld connection to ensure a permanent, leak-proof seal.
Key sizing details for correct selection.
| Specification | Details |
|---|---|
| Product Type | Reducer Bushing (Flush Style) |
| Connection 1 (Large End) | Spigot (Fits INSIDE a Fitting Socket) |
| Connection 2 (Small End) | Slip / Socket (Accepts PVC Pipe) |
| Material | Schedule 40 PVC (White) |
| Standards | ASTM D-1784, ASTM D-2466, NSF Approved |
| MPNs |
437-101 (3/4" x 1/2"), 437-130 (1" x 1/2"), 437-131 (1" x 3/4"), 437-168 (1 1/4" x 1"), 437-211 (1 1/2" x 1"), 437-251 (2" x 1 1/2") |
| Common Brand Names | Lasco, Spears, Dura |
Double solvent welding is required for bushings.
Step 1: Prep All Surfaces
Clean four surfaces: the outside of the bushing, the inside of the bushing, the inside of the receiving fitting (e.g., Tee), and the outside of the pipe.
Step 2: Prime
Apply Purple Primer to all mating surfaces. Do not skip this step.
Step 3: Glue Bushing
Apply PVC Glue to the outside of the bushing and the inside of the larger fitting. Insert the bushing fully until flush, twist 1/4 turn, and hold for 30 seconds.
Step 4: Glue Pipe
Apply glue to the inside of the bushing and the outside of your smaller pipe. Insert the pipe, twist, and hold to set the final connection.
Verify your connections:
Everything required for a successful installation:
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