2-Piece Brass Air Flow Valves – 1/4″ NPT Male/Female
$9.99 on Amazon.com (as of October 16, 2026, 9:11 PM EST) View details ↗
Precision-engineered for compressed air systems, these OZXNO 1/4″ NPT brass in-line flow regulators provide reliable, adjustable control over air pressure and flow rate. The durable brass construction ensures a corrosion-resistant, long-lasting connection while maintaining consistent performance in demanding applications. Each valve features a smooth, 360° adjustable knob for quick, precise adjustments—ideal for workshops, pneumatic tools, or HVAC systems where fine-tuned airflow is critical.
With a male and female threaded design, these valves seamlessly integrate into existing 1/4″ NPT piping or hose setups, eliminating the need for adapters. The compact yet robust build (40mm L x 25mm W) ensures easy installation in tight spaces, while the high-quality brass material resists wear and maintains a secure seal over time. Note: These valves regulate flow but do not provide a complete shutoff. Includes two pieces for redundancy or parallel applications.
| Connector Type | 1/4″ NPT Male & 1/4″ NPT Female |
|---|---|
| Material | High-quality brass (corrosion-resistant) |
| Dimensions (L x W) | 40mm x 25mm (1.57″ x 0.98″) |
| External Thread Diameter | 13mm (0.51″) |
| Internal Thread Diameter | 12mm (0.47″) |
| Flow Control | Adjustable (does not provide 100% shutoff) |






