1/2 in. x 3/8 in. Male x Female Schedule 80 PVC Bushing
Overview
The MPN 839073 is a Schedule 80 PVC reducer bushing with a 1/2 in. male NPT thread on the outside and a 3/8 in. female NPT thread inside, reducing a 1/2 in. threaded port down to 3/8 in. It threads into a larger female fitting while accepting a smaller male-threaded pipe or nipple. Built to ASTM D1784, D2464, and D2467, it handles corrosive media and moderate pressure.
Technical Specifications
| Part Number (MPN) | 839073 |
| Fitting Type | Reducer Bushing |
| Size | 1/2 in. x 3/8 in. |
| Connection Type | Male NPT x Female NPT (MPT x FPT) |
| Thread Size | 1/2 - 14 x 3/8 - 18 NPT |
| Material | Schedule 80 PVC |
| Max Temperature | 140°F |
| Standards | ASTM D1784, D2464, D2467 |
| Sold Per | Each |
Materials of Construction
| Body | Schedule 80 polyvinyl chloride (PVC) |
| Outer Thread | Male NPT (MPT), 1/2 - 14 |
| Inner Thread | Female NPT (FPT), 3/8 - 18 |
Typical Applications
This reducer bushing adapts a 1/2 in. female-threaded port down to 3/8 in. male-threaded pipe in chemical metering and feed lines, instrument and gauge connections, and small-bore process piping where a compact threaded size reduction in a chemical-resistant material is required.
Cross-Reference and Interchange
This bushing cross-references to these competitor and industry part numbers: 4596K403. Replacing one of these? Match nominal size, connections, and rating, or send us your part number and we will confirm the interchange.
Sizing and Installation Resources
- PVC Schedule 40 vs. 80 Fittings
- PVC Chemical Compatibility Chart
- NPT Thread Tightening: Turns Past Hand-Tight
- Teflon Tape vs. Pipe Dope
- Pipe Size Reference Chart
Frequently Asked Questions
How does a reducer bushing install?
The 1/2 in. male NPT exterior threads into a larger 1/2 in. female port, and a 3/8 in. male-threaded pipe or nipple threads into the 3/8 in. female interior. Both joints are sealed with thread tape or dope.
Is it threaded or slip?
Fully threaded: male NPT outside, female NPT inside. No solvent cement is used.
What standards does it meet?
It conforms to ASTM D1784 (PVC material), D2464 (Schedule 80 threaded fittings), and D2467 (Schedule 80 socket fittings).
How tight should the threads be?
Hand-tighten, then one to two turns with a wrench. Overtightening PVC threads risks cracking.
WARNING: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.