Belimo B323 Valve

The Belimo B323 is a 1-inch 3-way characterising control valve engineered for precision fluid control in high-performance HVAC systems. Built with a nickel-plated forged brass body and a stainless steel ball and stem, this valve is designed to withstand chilled or hot water applications with temperatures reaching up to 250°F. Featuring a 10 Cv flow coefficient, the A-port provides an equal percentage flow characteristic for linear heat transfer, while the B-port is modified to maintain a constant common port flow, making it ideal for hydronic mixing or diverting. This NPT threaded ball valve utilizes a specialized TEFZEL characterising disc to prevent seat erosion and handle up to 60% glycol solutions without performance degradation. For technicians prioritizing long-term reliability in commercial hydronic systems, the B323 offers low torque requirements and bubble-tight shut-off, ensuring ASHRAE 90.1 compliance for energy-efficient building automation.

Key Performance Technical Specifications

• 1-inch NPT connections for standard iron pipe size integration.
• Forged brass body with stainless steel trim for superior corrosion resistance.
• 10 Cv rating optimized for precise thermal load management in air handlers and fan coils.
• Supports 600 psi static pressure and 50 psi differential pressure for high-rise applications.
• Triple-seal stem technology utilizes EPDM O-rings to eliminate maintenance requirements.

Common Contractor Questions

What is the maximum glycol concentration for the B323?
This valve is rated for hydronic applications containing up to 60% ethylene or propylene glycol solutions.

Can the B323 be used for steam applications?
No, this model is specifically engineered for water-based media including chilled and hot water up to 250°F; it is not rated for saturated steam.

Which actuators are compatible with this 1-inch valve?
The B323 is designed to pair with Belimo LR, AR, and NR series actuators, allowing for easy field assembly and flexible control signals.

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.