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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 Type1/4″ NPT Male & 1/4″ NPT Female
MaterialHigh-quality brass (corrosion-resistant)
Dimensions (L x W)40mm x 25mm (1.57″ x 0.98″)
External Thread Diameter13mm (0.51″)
Internal Thread Diameter12mm (0.47″)
Flow ControlAdjustable (does not provide 100% shutoff)
Can these valves be used to completely shut off airflow?
No, these regulators control flow but do not provide a 100% shutoff—use them for fine-tuning pressure, not as a valve.
Are these compatible with standard 1/4″ NPT hoses and fittings?
Yes, the male/female threaded design matches common 1/4″ NPT systems, ensuring a secure, leak-free connection.
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