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Dec 15th 2025
The Schedule 40 PVC Reducer Bushing is the most space-efficient solution for reducing the pipe size within your irrigation manifold or water line. Designed with a Spigot x Slip configuration, this fitting inserts completely inside the socket of a larger fitting (such as a Tee, Elbow, or Coupling), creating a smaller socket to accept a reduced size of PVC pipe.
Because it fits flush within the existing joint, this bushing allows you to step down line sizes without adding extra length or cutting into your pipe layout. It is perfect for branching off a main header to smaller zone lines or adapting a large pump outlet to a standard irrigation system.
Key details for sizing and compatibility.
| 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 | White Schedule 40 PVC |
| Max Temperature | 140° F (Not for hot water) |
| Standards | ASTM D-1784, ASTM D-2466, NSF-PW |
| MPNs (Common Sizes) |
437-101 (3/4" x 1/2"), 437-130 (1" x 1/2"), 437-131 (1" x 3/4") |
Proper installation involves two solvent weld connections.
Step 1: Prep Surfaces
Clean the inside of the larger fitting hub, the outside of the bushing, the inside of the bushing, and the outside of the smaller pipe. Remove all burrs.
Step 2: Prime
Apply PVC Primer to all mating surfaces. This is critical for a strong bond.
Step 3: Glue the Bushing
Apply PVC Glue to the outside of the bushing and inside the larger fitting hub. Insert the bushing fully, twisting a quarter turn. Hold for 30 seconds.
Step 4: Glue the Pipe
Once the bushing is set, apply glue to the inside of the bushing and the outside of your smaller pipe. Insert the pipe, twist, and hold until bonded.
Ensure you have the right parts:
Get everything you need for a permanent installation:
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