Brass NPT Female Coupling 1/8" 1/4" 3/8" 1/2" Pipe Fitting
Brass NPT Female Coupling 1/8" 1/4" 3/8" 1/2" Pipe Fitting
Brass NPT Female Coupling — Reliable Pipe Connections for Every Job
Keep your air lines, plumbing runs, and compressor systems leak-free with these solid brass NPT female couplings. Engineered to join two same-diameter pipes in a straight run, each coupling is precision-machined from high-quality copper brass for lasting durability and superior thread engagement.
Key Features
- Material: High-grade brass (copper alloy) — corrosion-resistant and built to last
- Thread Type: NPT (National Pipe Taper) female threads on both ends for a secure, leak-resistant seal
- Available Sizes: 1/8" × 1/8", 1/4" × 1/4", 3/8" × 3/8", and 1/2" × 1/2" NPT female
- Max Pressure Rating: Up to 850 kPa — suitable for air compressors, pneumatic lines, and general plumbing
- Connection Type: Straight coupling — joins two pipes of the same diameter in a continuous run
- Versatile Use: Ideal for air compressors, water lines, fuel systems, and general pipe repair or extension
- Brand New: Each coupling is inspected for quality before packaging
What's in the Box?
- 1 × Brass NPT Female Coupling (size of your choice)
Made in Mainland China.
Specifications
| Material | Brass (Copper Alloy) |
| Thread Type | NPT Female |
| Sizes | 1/8", 1/4", 3/8", 1/2" |
| Max Pressure | < 850 kPa |
| Connector Type | Coupling (Straight) |
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Frequently Asked Questions
Q: What sizes does the brass NPT female coupling come in?
A: The coupling is available in four standard NPT sizes: 1/8" × 1/8", 1/4" × 1/4", 3/8" × 3/8", and 1/2" × 1/2". Simply select your required size at checkout to ensure the right fit for your pipe system.
Q: What is this brass coupling compatible with — can I use it on an air compressor?
A: Yes! This NPT female coupling is well-suited for air compressor lines, pneumatic systems, water lines, and general plumbing applications. It is rated for pressures up to 850 kPa, making it a dependable choice for most residential and light commercial compressor setups.
Q: Do I need thread sealant tape when installing this brass coupling?
A: For the best leak-resistant seal, we recommend wrapping the threads with PTFE (thread seal) tape before installation. This is standard practice with NPT-threaded fittings and helps ensure a tight, long-lasting connection.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.