Belimo G780 Valve

The Belimo G780 is a heavy-duty 3-inch 3-way flanged globe valve designed for precise flow control in demanding HVAC chilled and hot water applications. Featuring a robust cast iron body and high-performance bronze trim, this mixing or diverting valve is engineered to withstand high pressure drops and maintain peak system efficiency. With a flow coefficient (Cv) of 91 and an ANSI Class 125 flanged connection, this assembly ensures reliable integration into commercial piping systems. This valve is frequently coupled with Belimo EV, AVK, or RV series actuators, providing accurate proportional control and linear flow characteristics necessary for maintaining stable setpoints in air handling units and large-scale heat exchangers.

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Technical Capabilities

• Industrial-Grade Construction: Built with a Class 125 cast iron housing and bronze internal components for durability in closed-loop systems.
• Optimized Flow Dynamics: Provides a 91 Cv rating, offering low pressure drop across the valve plug while maintaining tight shut-off.
• Multi-Configuration Versatility: Suitable for both mixing and diverting applications, allowing for flexible piping layouts.
• Standardized Flange Interface: 3-inch flanged ports ensure compatibility with standard ANSI piping specifications.
• Reliable Actuation: Engineered for seamless pairing with electronic fail-safe and non-spring return actuators for automated building management systems.

Common Installation Inquiries

Is the Belimo G780 suitable for steam applications?
No, the G780 is specifically rated for water and glycol solutions up to 50%. For steam service, a stainless steel trim globe valve is required.

What is the maximum fluid temperature for this 3-way valve?
This assembly is generally rated for fluid temperatures ranging from 25°F to 250°F (-4°C to 120°C).

Can I field-convert this valve from mixing to diverting?
Yes, the Belimo G780 flanged globe valve can be piped for either mixing or diverting service depending on the system flow requirements and actuator calibration.

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.