Johnson Controls A-4000-138 Pressure Reducing Valve Station with Bracket and Gauge

The Johnson Controls A-4000-138 is a complete pressure reducing station designed for use in HVAC and building automation systems. This compact unit features a 3/8-inch pressure reducing valve (PRV) that helps maintain consistent downstream pressure while protecting equipment from excessive pressure fluctuations.

Key Features:

• 3/8-inch NPT pressure reducing valve for precise pressure control
• Includes mounting bracket for easy installation
• Integrated 0-30 PSI pressure gauge for visual monitoring
• Reliable pressure regulation for pneumatic control systems
• Durable construction for long-term performance

This pressure reducing station is commonly used in pneumatic control applications where consistent air pressure is critical for proper system operation. The included gauge allows technicians to quickly verify system pressure during installation and maintenance procedures.