Belimo B311+LF24-SR Valve Assembly
The Belimo B311+LF24-SR is a precision-engineered 3-way characterized control valve (CCV) assembly designed for modulating control in closed-loop hydronic systems. Featuring a 1/2 inch NPT connection and a 1.9 Cv rating, this valve utilizes a stainless steel ball and stem to prevent corrosion and ensure long-term reliability in demanding HVAC applications. The assembly is paired with the LF24-SR spring return actuator, providing 35 in-lb of torque and reliable fail-safe operation. This 24V proportional valve operates on a 2-10VDC control signal, making it a standard choice for air handling units and reheat coils where precise flow regulation is critical. The specialized A-port Tefzel characterizing disc ensures an equal percentage flow characteristic, preventing hunting and maintaining stable discharge temperatures. For contractors, the universal mounting plate and brushless DC motor technology translate to reduced commissioning time and maintenance-free performance in high-performance building automation systems.
- Corrosion Resistance: The stainless steel trim and blow-out proof stem design offer superior durability against varying water chemistry.
- Precise Modulation: The proportional 2-10VDC signal allows for granular control of chilled or hot water systems.
- Fail-Safe Reliability: The mechanical spring return ensures the valve returns to its safety position during a power loss.
- High Close-off Pressure: Designed to handle differential pressures effectively while maintaining a bubble-tight shutoff on the A-port.
Common Questions
What is the maximum fluid temperature for the B311+LF24-SR?
This valve assembly is rated for a media temperature range of 0°F to 250°F (-18°C to 120°C), making it suitable for low-pressure steam and standard hydronic loops.
Can this actuator be mounted in any orientation?
The assembly should be mounted with the actuator above the valve body. Horizontal mounting is acceptable, but inverted installation is not recommended to prevent condensate from entering the actuator housing.
Is this valve suitable for domestic potable water?
No, the B311 series is specifically designed for closed-loop HVAC systems and is not lead-free rated for potable water applications.
This item is not eligible for free shipping.
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.
Original: $494.34
-65%$494.34
$173.02Belimo B311+LF24-SR Valve Assembly
The Belimo B311+LF24-SR is a precision-engineered 3-way characterized control valve (CCV) assembly designed for modulating control in closed-loop hydronic systems. Featuring a 1/2 inch NPT connection and a 1.9 Cv rating, this valve utilizes a stainless steel ball and stem to prevent corrosion and ensure long-term reliability in demanding HVAC applications. The assembly is paired with the LF24-SR spring return actuator, providing 35 in-lb of torque and reliable fail-safe operation. This 24V proportional valve operates on a 2-10VDC control signal, making it a standard choice for air handling units and reheat coils where precise flow regulation is critical. The specialized A-port Tefzel characterizing disc ensures an equal percentage flow characteristic, preventing hunting and maintaining stable discharge temperatures. For contractors, the universal mounting plate and brushless DC motor technology translate to reduced commissioning time and maintenance-free performance in high-performance building automation systems.
- Corrosion Resistance: The stainless steel trim and blow-out proof stem design offer superior durability against varying water chemistry.
- Precise Modulation: The proportional 2-10VDC signal allows for granular control of chilled or hot water systems.
- Fail-Safe Reliability: The mechanical spring return ensures the valve returns to its safety position during a power loss.
- High Close-off Pressure: Designed to handle differential pressures effectively while maintaining a bubble-tight shutoff on the A-port.
Common Questions
What is the maximum fluid temperature for the B311+LF24-SR?
This valve assembly is rated for a media temperature range of 0°F to 250°F (-18°C to 120°C), making it suitable for low-pressure steam and standard hydronic loops.
Can this actuator be mounted in any orientation?
The assembly should be mounted with the actuator above the valve body. Horizontal mounting is acceptable, but inverted installation is not recommended to prevent condensate from entering the actuator housing.
Is this valve suitable for domestic potable water?
No, the B311 series is specifically designed for closed-loop HVAC systems and is not lead-free rated for potable water applications.
This item is not eligible for free shipping.
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.
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Description
The Belimo B311+LF24-SR is a precision-engineered 3-way characterized control valve (CCV) assembly designed for modulating control in closed-loop hydronic systems. Featuring a 1/2 inch NPT connection and a 1.9 Cv rating, this valve utilizes a stainless steel ball and stem to prevent corrosion and ensure long-term reliability in demanding HVAC applications. The assembly is paired with the LF24-SR spring return actuator, providing 35 in-lb of torque and reliable fail-safe operation. This 24V proportional valve operates on a 2-10VDC control signal, making it a standard choice for air handling units and reheat coils where precise flow regulation is critical. The specialized A-port Tefzel characterizing disc ensures an equal percentage flow characteristic, preventing hunting and maintaining stable discharge temperatures. For contractors, the universal mounting plate and brushless DC motor technology translate to reduced commissioning time and maintenance-free performance in high-performance building automation systems.
- Corrosion Resistance: The stainless steel trim and blow-out proof stem design offer superior durability against varying water chemistry.
- Precise Modulation: The proportional 2-10VDC signal allows for granular control of chilled or hot water systems.
- Fail-Safe Reliability: The mechanical spring return ensures the valve returns to its safety position during a power loss.
- High Close-off Pressure: Designed to handle differential pressures effectively while maintaining a bubble-tight shutoff on the A-port.
Common Questions
What is the maximum fluid temperature for the B311+LF24-SR?
This valve assembly is rated for a media temperature range of 0°F to 250°F (-18°C to 120°C), making it suitable for low-pressure steam and standard hydronic loops.
Can this actuator be mounted in any orientation?
The assembly should be mounted with the actuator above the valve body. Horizontal mounting is acceptable, but inverted installation is not recommended to prevent condensate from entering the actuator housing.
Is this valve suitable for domestic potable water?
No, the B311 series is specifically designed for closed-loop HVAC systems and is not lead-free rated for potable water applications.
This item is not eligible for free shipping.
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.
