Norgren 12VB00428 Needle Air Flow Control Valve 1/4 in

Product Description

The NORGREN 12VB00428 is a needle-style air flow control valve designed to regulate airflow in pneumatic systems. It features a tube-to-NPT connection configuration with a 1/4 inch tube outside diameter, making it suitable for inline flow adjustment in compressed air lines. The valve body is constructed from brass, providing corrosion resistance and durability in industrial and commercial pneumatic applications. It is sized for light-duty to medium-duty pneumatic circuits and is typically installed by industrial maintenance technicians, HVAC mechanics, and pneumatic system specialists who require precise manual flow control.

This valve is used in pneumatic control systems where regulated airflow is needed at a specific point in the circuit. Common applications include air actuator speed control, pneumatic tool supply lines, and instrumentation air circuits in commercial and light industrial environments. The tube-to-NPT design allows it to connect directly between tubing runs and threaded pipe fittings without additional adapters in standard configurations.

Key Features

• Needle valve design allows precise manual adjustment of airflow rate
• Brass body construction offers corrosion resistance in compressed air service
• 1/4 inch tube OD connection on one end with NPT threaded fitting on the other
• Compact form factor suited for tight pneumatic panel or inline installations
• Single-piece package quantity for individual component replacement or new installation

Compatibility

Designed as an OEM-style replacement or new-install component for pneumatic systems using 1/4 inch OD tubing with NPT threaded connections in compressed air service.

Installation Notes

Installation should be performed by a qualified pneumatic systems technician or licensed mechanic familiar with compressed air circuit work. Depressurize and lock out the air supply line before installing or replacing this valve. Apply appropriate thread sealant to the NPT fitting per shop practice, and ensure the tube connection is fully seated and secured before restoring pressure. Verify flow direction requirements of the connected circuit prior to final installation.