Johnson Controls V47AB-4 Temperature Actuated Water Regulating Valve 1/2" NPT 160-230°F

The Johnson Controls V47AB-4 is a direct-acting temperature actuated modulating water valve designed to regulate the flow of water or glycol to maintain optimal operating temperatures in HVAC systems, heat exchangers, and industrial cooling applications. This 1/2" NPT valve features a heating point range of 160°F to 230°F, making it ideal for internal combustion engines, air compressors, hydraulic oil cooling, and water-cooled condensers.

Key Features:

• Cast brass construction for durability and corrosion resistance
• Temperature range: 160°F to 230°F (71°C to 110°C)
• 1/2" NPT pipe connection size
• 6-foot nylon-armored capillary with Style 4 bulb (11/16" diameter x 3-1/4" long)
• Valve action opens on temperature increase
• No close-fitting sliding parts in water passages
• Range spring isolated from cooling water for extended service life
• Design minimizes chatter and water hammer
• Manual flushing capability for maintenance
• Maximum supply water pressure: 150 PSIG
• Maximum water temperature: 170°F

The V47AB-4 includes a removable bypass plug that can be replaced with a bypass orifice (provided separately) for system customization. The valve provides smooth temperature modulation with free movement of all internal parts, and adjustment is not affected by water pressure variations. This valve is designed for use as an operating device and is widely used in industrial and commercial temperature control applications.