Norgren 12VB00638 Needle Air Flow Control Valve 3/8 in

Product Description

The NORGREN 12VB00638 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 3/8-inch tube outside diameter and a brass body construction. This type of valve allows a technician to dial in precise flow rates by adjusting the needle orifice, making it a standard component in compressed air lines, pneumatic control circuits, and automation systems. Installation and servicing are typically performed by industrial maintenance technicians, HVAC controls specialists, or instrumentation professionals working with pneumatic process equipment.

This valve is suited for use in pneumatic control applications where fine airflow adjustment is required. The tube-to-NPT interface accommodates common tubing and threaded pipe connections found in light industrial, commercial HVAC controls, and process automation environments. Its compact brass construction makes it appropriate for dry air service and general-purpose pneumatic circuits operating at typical shop-air pressures. The 3/8-inch tube OD sizing fits standard pneumatic tubing used across a wide range of control panel and field-mounted applications.

Key Features

• Needle valve design provides precise, adjustable airflow control
• Brass body offers durability and corrosion resistance in dry air service
• Tube x NPT connection accommodates both compression tubing and threaded pipe fittings
• 3/8-inch tube outside diameter matches standard pneumatic tubing sizes
• Compact form factor suits panel-mount and inline pneumatic circuit installations

Compatibility

Designed as an OEM-style replacement or new-installation needle flow control valve for pneumatic systems using 3/8-inch OD tubing with NPT threaded connections.

Installation Notes

Installation should be performed by a qualified technician familiar with pneumatic system safety practices. Depressurize and lock out the pneumatic circuit before removing or installing any flow control valve. Use thread sealant appropriate for air service on the NPT threads and verify the tube connection is fully seated and leak-free before returning the system to pressure. Follow all applicable site safety and pneumatic system codes during service.