Belimo B219+LF24-SR Characterized Control Valve Cv Spring Return - 3/4 2-Way 10 24V 2-10V

The Belimo B219+LF24-SR is a factory-assembled Characterized Control Valve (CCV) combining the B219 3/4" two-way ball valve body with the LF24-SR fail-safe modulating actuator. Designed for precise proportional control of hot water and chilled water in HVAC and Building Automation Systems (BAS), this assembly delivers reliable, repeatable performance in a compact, direct-coupled package.

Valve Specifications (B219):

• Pipe Size: 3/4" (DN 20)
• Configuration: 2-Way
• Flow Coefficient: Cv 10
• Connection: Female NPT (FNPT)
• Body Material: Forged brass with nickel plating
• Ball & Stem: Chrome-plated or stainless steel ball
• Seals: PTFE Teflon® with Tefzel® characterized disc and EPDM o-rings
• Maximum Close-Off Pressure: 200 psi
• Leakage: 0% for port A to AB
• Flow Characteristic: Equal percentage

Actuator Specifications (LF24-SR):

• Fail-Safe Action: Spring Return
• Supply Voltage: AC/DC 24V
• Control Signal: 2–10V DC modulating (also supports On/Off and floating point)
• Torque Output: 35 in-lb
• Operation: Modulating, On/Off, and floating point control modes
• Communicative actuator ready

Key Features:

• Factory-assembled valve and actuator combination — no field assembly required
• Fail-safe spring return ensures the valve moves to a defined safe position on power loss
• Proportional 2–10V control signal for precise HVAC hydronic system regulation
• Compatible with Building Automation Systems (BAS) and direct digital controls (DDC)
• Suitable for chilled water, hot water, and heat pump coil applications

The Belimo B219+LF24-SR is an ideal solution for contractors and engineers specifying reliable hydronic control valves in commercial HVAC applications, offering the quality and repeatability Belimo is known for worldwide.