Johnson Controls VG1841AG Valve

The Johnson Controls VG1841AG is a high-performance 1/2" 3-way ball valve engineered for precise control in commercial HVACR applications. Specifically designed for equal percentage flow, this valve ensures stable temperature regulation by providing a linear relationship between the valve stem position and the flow rate. Built with a rugged forged brass body and plated brass trim, it provides a 580 psig static pressure rating and is rated for a minimum of 200,000 leak-free cycles. This NPT threaded ball valve is ideal for regulating hot water, chilled water, or 50% glycol solutions within a fluid temperature range of 23?F to 203?F. It features an Amodel flow characterizing disk in Port A to improve rangeability and graphite-reinforced PTFE seats for superior wear resistance against iron-oxide contaminated water. For reliable operation, the VG1841AG is compatible with VA9104 or VA9203 series actuators using specific linkages to match your automation requirements.

• Equal Percentage Flow Control: Port A includes a characterizing disk for precise modulation in coil-based HVAC systems.
• High Cycle Life: Maintenance-free design tested for over 200,000 full-stroke cycles to ensure longevity in demanding loops.
• Durable Construction: The forged brass valve body easily handles 580 psig static pressure and 200 psid close-off pressure.
• Media Versatility: Optimized for chilled water, hot water, and glycol mixtures up to 50% concentration.
• Leak-Free Performance: Dual EPDM O-ring stem seals provide a redundant barrier against fluid loss.

• Which port should be used as the inlet on this 3-way valve? For mixing or regulating applications, Port A contains the characterizing disk and must be utilized as the inlet to maintain equal percentage flow.
• What actuators are compatible with the Johnson Controls VG1841AG? This valve body is designed to pair with Johnson Controls VA9104 non-spring return or VA9203/VA9208 spring return actuators. Always confirm the specific linkage kit required for your torque needs.
• Can this brass trim model be used for steam applications? No, while the VG1000 stainless steel trim models support low-pressure steam, this plated brass trim version is strictly rated for water and glycol solutions.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.