Johnson Controls VG1841BN Valve

The Johnson Controls VG1841BN is a high-performance 3-way ball valve engineered for precise flow regulation in HVAC systems, specifically targeting fan coil and reheat coil applications. Featuring a 3/4" NPT connection and an 11.7 Cv rating, this valve uses a forged brass body and plated brass trim to ensure durability in demanding environments. The integrated equal percentage flow characteristic, provided by a specialized Amodel flow characterizing disk, allows for stable temperature control that mimics the linear performance of traditional globe valves. Designed for a fluid temperature range of 23?F to 203?F, it is ideal for both chilled and hot water systems. The assembly utilizes graphite-reinforced PTFE seats and double EPDM O-ring stem seals, which have been tested to maintain a leak-free seal for over 200,000 cycles. This motorized control valve is compatible with a wide array of Johnson Controls actuators, including the VA9104, M9106, and VA9203 series, supporting on/off, floating, or proportional control logic.

• Precise Modulation: The equal percentage flow disk ensures accurate heat transfer and prevents hunting in the control loop.
• Maximum Reliability: Rated for a closeoff pressure of 200 psi and a static pressure of 580 psig, ensuring tight shutoff and leak prevention.
• Field Versatility: The 3/4 inch NPT threads and compact forged brass design allow for easy installation in tight mechanical spaces.
• Extended Service Life: Maintenance-free design with blowout-proof stems and reinforced seats built to withstand iron-oxide contaminated water.

What is the proper port configuration for mixing applications?
For standard mixing, Port A should be designated as the coil inlet and Port B as the bypass inlet, with Port C serving as the common outlet. To ensure proper equal percentage flow, always verify the disk location in Port A before commissioning.

Is this valve suitable for steam service?
The VG1841BN with plated brass trim is specifically rated for hot and chilled water or up to 50% glycol solutions. For saturated steam applications, a stainless steel trim model is required.

Which actuators are compatible with this 11.7 Cv valve?
This valve body safely interfaces with Johnson Controls M9000 series linkages and can be paired with both spring-return (VA9203/VA9208) and non-spring return (VA9104/M9106) electric actuators depending on your fail-safe requirements.

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.