Johnson Controls VG1841ER Valve

Professionals in the field rely on the Johnson Controls VG1841ER Valve specifically for high-efficiency fluid control in automated commercial HVAC systems. This 1 1/2" NPT 3-way ball valve occupies a critical spot in a contractor's inventory, offering a 29.2 Cv rating and an equal percentage flow characteristic designed to provide precise temperature regulation that matches the performance of traditional globe valves. Built with a robust forged brass body and plated brass trim, this unit is engineered for long-term reliability in demanding chilled water, hot water, and 50% glycol applications. Its internal Amodel flow-characterizing disk and graphite-reinforced PTFE seats ensure high rangeability and tight shutoff (ANSI Class IV), reducing maintenance overhead. Whether field-mounting with a VA9104 or VA9208 actuator, this valve's blowout-proof stem and 200,000-cycle life expectancy deliver the durability required for critical bypass or mixing services.

Key Benefits for Contractors:

• Optimized Performance: Features 500:1 rangeability for accurate load control in diverse HVAC environments.
• Rugged Construction: Rated for 580 psig static pressure and 200 psid closeoff pressure to prevent leakage.
• Reliable Sealing: Equipped with EPDM double O-ring stem seals, tested to remain leak-free over 200,000 cycles.
• Technical Compatibility: Port A is specifically designated as the coil inlet on 3-way models to ensure proper equal percentage flow.

Common Questions & Technical Support:

What actuators are compatible with the VG1841ER?
This valve is designed for use with Johnson Controls M9100/VA9104 non-spring return and M9200/VA9208 spring return electric actuators using standard linkages.

Can this valve be used for steam applications?
While the VG1000 series includes steam-rated versions, models with brass trim like the VG1841ER are primarily intended for water and glycol solutions up to 203°F. Stainless steel trim models are required for low-pressure steam.

Is the flow direction critical during installation?
Yes. To utilize the characterized flow disk, liquid must enter through Port A. On 3-way mixing or diverting configurations, improper piping will lead to erratic control and potential noise issues.

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.