Belimo B317B+LF24-SR-S 3/4" 3-Way Bronze Ball Valve with Spring Return Actuator

The Belimo B317B+LF24-SR-S is a high-performance 3-way brass ball valve assembly designed for HVAC hydronic control applications. This compact valve features a 3/4" NPT connection with a 4.7 Cv flow coefficient, making it ideal for mixing and diverting applications in chilled water, hot water, and glycol systems.

Valve Specifications:

• Bronze construction with lead-free certification for potable water compliance
• 3-way configuration for mixing or diverting service
• 4.7 Cv flow capacity for efficient flow control
• Pressure rating up to 400 PSI (27.6 bar)
• Temperature range: -4°F to 266°F (-20°C to 130°C)

LF24-SR-S Actuator Features:

• 24V AC/DC power supply for flexible installation
• Spring return failsafe operation returns to default position on power loss
• 2-10 VDC modulating control signal for precise positioning
• 35 in-lb (4 Nm) torque output
• 90-second nominal running time for full stroke
• Auxiliary switch (SW) for status feedback and sequencing
• Position feedback and manual override capability

This valve and actuator combination provides reliable, energy-efficient control for commercial and residential HVAC systems, with Belimo's industry-leading quality and performance. The lead-free bronze construction meets NSF/ANSI 61 and 372 standards for safe use in potable water applications.