3/8 in. Female NPT Schedule 80 PVC Coupling
Overview
The MPN 830003 is a 3/8 in. Schedule 80 PVC coupling with female NPT (FPT) threads on both ends, joining two threaded 3/8 in. pipe runs without solvent cement. The 3/8 - 18 NPT threads make it ideal for connections that may later need to be disassembled. Gray Schedule 80 PVC delivers the chemical resistance and pressure headroom required in industrial fluid lines.
Technical Specifications
| Part Number (MPN) | 830003 |
| Fitting Type | Coupling |
| Size | 3/8 in. x 3/8 in. |
| Connection Type | Female NPT x Female NPT (FPT) |
| Thread Size | 3/8 - 18 NPT |
| Material | Schedule 80 PVC |
| Color | Gray |
| Max Temperature | 140°F |
| Sold Per | Each |
Materials of Construction
| Body | Schedule 80 polyvinyl chloride (PVC) |
| Joining Method | Female NPT threaded (FPT) |
| Color | Gray |
Typical Applications
This threaded coupling connects two runs of 3/8 in. NPT pipe or male-threaded fittings in chemical metering and feed lines, water treatment skids, and instrument piping where a serviceable, non-cemented joint is preferred. Schedule 80 construction suits corrosive media and moderate pressure service.
Cross-Reference and Interchange
This coupling cross-references to these competitor and industry part numbers: 4596K69. 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
Are these slip or threaded ends?
Both ends are female NPT (FPT) threads, 3/8 - 18. No solvent cement is needed; the joint is made up with thread sealant.
Should I use Teflon tape or pipe dope?
Use PTFE thread tape or a PVC-compatible thread sealant. Do not overtighten plastic threads; turns past hand-tight should be limited to avoid splitting the fitting.
Does it work with Schedule 40 threaded pipe?
Yes. NPT threads are the same across schedules, so it threads onto 3/8 in. NPT Schedule 40 or 80 pipe and fittings.
What is the temperature limit?
Rated to roughly 140°F; pressure capacity drops as temperature rises, so de-rate per the manufacturer curve.
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.