Brass Reducer 3/8" NPT Male to 1/4" NPT Female Pipe Fitting Adapter 5-Pack
Brass Reducer 3/8" NPT Male → 1/4" NPT Female — Durable Hex Bushing Adapter
Premium brass NPT reducer engineered for reliable, leak-resistant pipe transitions in pneumatic, plumbing and refrigeration systems.
Product Overview
Our Brass Reducer 3/8" NPT Male to 1/4" NPT Female (5-Pack) is a compact, heavy-duty hex bushing designed to connect threaded pipes and fittings with different NPT sizes. Manufactured from high-purity brass, these adapters deliver excellent corrosion resistance, low magnetic permeability, and reliable mechanical performance across a wide temperature range.
Key Benefits
- High compatibility: Connects to brass, bronze, copper, steel, aluminum and iron pipes.
- Premium material: High-purity brass for durability and corrosion resistance.
- Leak-resistant: Deep, precision-cut NPT threads for a secure seal; use PTFE (Teflon) tape for extra leak prevention.
- Wide operating range: Rated up to 1200 PSI and temperatures from -65°F to +250°F (-53°C to +121°C).
- Versatile applications: Plumbing, air, oil, LP/natural gas, fuel systems and refrigeration.
Important Safety & Compliance Notes
Do not use for potable water in the United States: These fittings contain low lead and are not permitted by federal law for installation on systems intended for drinking water in the U.S. and its territories. Follow local codes and regulations when selecting fittings for potable water.
Where to Use
This hex bushing is suitable for low- and medium-pressure pipelines and equipment including:
- Pneumatic tools and compressed-air lines
- Fuel and propane lines (observe local code)
- HVAC and refrigeration service lines
- General plumbing and vacuum connections (non-potable applications)
Installation Tips
- Confirm thread sizes — NPT is a nominal pipe size (NPS). NPT size does not equal actual measured diameter; consult a size chart if unsure.
- Clean threads and remove debris before assembly.
- Wrap the male threads with PTFE (Teflon) tape (wrap clockwise when facing thread end) for improved sealing on gas and air applications.
- Hand-start threads to avoid cross-threading; tighten with an appropriate wrench on the hex flats.
- Perform a soap/bubble test after pressurizing the system to verify there are no leaks.
Specifications
| Specification | Detail |
|---|---|
| Size | 3/8" NPT Male × 1/4" NPT Female |
| Connector Type | Hex Bushing (Threaded) |
| Material | High-purity brass |
| Pressure Rating | Up to 1200 PSI |
| Temperature Range | -65°F to +250°F (-53°C to +121°C) |
| Pack Quantity | 5 pieces |
| Exterior Finish | Brass |
| Applicable Media | Air, Oil, Gas, Fuel, Propane (follow local code) |
| Applicable Pipe | Brass, Copper, Aluminium, Iron, Steel |
FAQ
Q: Can I use these for drinking water connections?
A: No — these fittings contain low lead and are not approved for potable water use in the U.S. Check local standards where you are located.
Q: Do NPT threads require sealant?
A: NPT is a tapered thread. Use PTFE tape or a thread sealant appropriate for the media (air, gas, fuel) to improve leak resistance. For gas services, use a gas-rated thread compound if required by code.
If you need compatible adapters for potable water systems, consider lead-free certified alternatives that meet your jurisdiction’s plumbing codes.
Add to Cart — 5-Pack
