Belimo B309B Valve
The Belimo B309B is a high-performance 1/2 inch 3-way characterized control valve designed specifically for demanding hydronic HVACR applications. Engineered with a 0.8 Cv rating, this NPT threaded ball valve features a Tefzel characterized disc that ensures an equal percentage flow characteristic on the A-port, providing the linear heat output necessary for stable control in air handling units and fan coil systems. The B-port is modified to maintain constant common port flow, making it an ideal choice for bypass loops and VAV box reheat coils where system pressure stability is critical.
Constructed for longevity in professional environments, the Belimo B309B utilizes a nickel-plated forged brass body paired with a chrome-plated brass ball and stem. This material profile supports hot and chilled water media up to a maximum temperature of 250°F and is compatible with up to 60% glycol solutions. With a 600 psi body pressure rating and 200 psi close-off pressure, this valve eliminates control loop hunting and provides 0% leakage from port A to AB, optimizing energy consumption across the hydronic circuit.
Key Benefits- Precise Hydronic Control: The equal percentage flow curve matches coil heat transfer, resulting in superior temperature stability.
- Robust Construction: Nickel-plated brass body and PTFE seats provide excellent chemical resistance and durability in high-cycle applications.
- Versatile Application: Suitable for mixing and diverting configurations in unit ventilators and bypass loops.
- Maintenance-Free Design: High-quality EPDM O-rings and chrome-plated trim ensure long-term reliability without recurring service needs.
- High Media Tolerance: Safely handles fluids from 0°F to 250°F, covering a broad spectrum of heating and cooling requirements.
Is the Belimo B309B suitable for steam applications?
No, this valve is specifically rated for chilled or hot water and glycol solutions up to 250°F. For steam service, a different valve series with appropriate packing and trim must be selected.
Can I use this valve with a spring-return actuator?
Yes, the B309B is compatible with various Belimo actuators, including the TFRB and LF series for spring-return (fail-safe) functionality, as well as TR and LRB non-spring return models.
What is the leakage rate for the bypass port?
While the A-port features a 0% leakage rate (ANSI Class VI), the modified B-port has a maximum leakage rate of less than 2% of the B-port Cv, which is standard for bypass control in mixing applications.
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.
Belimo B309B Valve
The Belimo B309B is a high-performance 1/2 inch 3-way characterized control valve designed specifically for demanding hydronic HVACR applications. Engineered with a 0.8 Cv rating, this NPT threaded ball valve features a Tefzel characterized disc that ensures an equal percentage flow characteristic on the A-port, providing the linear heat output necessary for stable control in air handling units and fan coil systems. The B-port is modified to maintain constant common port flow, making it an ideal choice for bypass loops and VAV box reheat coils where system pressure stability is critical.
Constructed for longevity in professional environments, the Belimo B309B utilizes a nickel-plated forged brass body paired with a chrome-plated brass ball and stem. This material profile supports hot and chilled water media up to a maximum temperature of 250°F and is compatible with up to 60% glycol solutions. With a 600 psi body pressure rating and 200 psi close-off pressure, this valve eliminates control loop hunting and provides 0% leakage from port A to AB, optimizing energy consumption across the hydronic circuit.
Key Benefits- Precise Hydronic Control: The equal percentage flow curve matches coil heat transfer, resulting in superior temperature stability.
- Robust Construction: Nickel-plated brass body and PTFE seats provide excellent chemical resistance and durability in high-cycle applications.
- Versatile Application: Suitable for mixing and diverting configurations in unit ventilators and bypass loops.
- Maintenance-Free Design: High-quality EPDM O-rings and chrome-plated trim ensure long-term reliability without recurring service needs.
- High Media Tolerance: Safely handles fluids from 0°F to 250°F, covering a broad spectrum of heating and cooling requirements.
Is the Belimo B309B suitable for steam applications?
No, this valve is specifically rated for chilled or hot water and glycol solutions up to 250°F. For steam service, a different valve series with appropriate packing and trim must be selected.
Can I use this valve with a spring-return actuator?
Yes, the B309B is compatible with various Belimo actuators, including the TFRB and LF series for spring-return (fail-safe) functionality, as well as TR and LRB non-spring return models.
What is the leakage rate for the bypass port?
While the A-port features a 0% leakage rate (ANSI Class VI), the modified B-port has a maximum leakage rate of less than 2% of the B-port Cv, which is standard for bypass control in mixing applications.
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 B309B is a high-performance 1/2 inch 3-way characterized control valve designed specifically for demanding hydronic HVACR applications. Engineered with a 0.8 Cv rating, this NPT threaded ball valve features a Tefzel characterized disc that ensures an equal percentage flow characteristic on the A-port, providing the linear heat output necessary for stable control in air handling units and fan coil systems. The B-port is modified to maintain constant common port flow, making it an ideal choice for bypass loops and VAV box reheat coils where system pressure stability is critical.
Constructed for longevity in professional environments, the Belimo B309B utilizes a nickel-plated forged brass body paired with a chrome-plated brass ball and stem. This material profile supports hot and chilled water media up to a maximum temperature of 250°F and is compatible with up to 60% glycol solutions. With a 600 psi body pressure rating and 200 psi close-off pressure, this valve eliminates control loop hunting and provides 0% leakage from port A to AB, optimizing energy consumption across the hydronic circuit.
Key Benefits- Precise Hydronic Control: The equal percentage flow curve matches coil heat transfer, resulting in superior temperature stability.
- Robust Construction: Nickel-plated brass body and PTFE seats provide excellent chemical resistance and durability in high-cycle applications.
- Versatile Application: Suitable for mixing and diverting configurations in unit ventilators and bypass loops.
- Maintenance-Free Design: High-quality EPDM O-rings and chrome-plated trim ensure long-term reliability without recurring service needs.
- High Media Tolerance: Safely handles fluids from 0°F to 250°F, covering a broad spectrum of heating and cooling requirements.
Is the Belimo B309B suitable for steam applications?
No, this valve is specifically rated for chilled or hot water and glycol solutions up to 250°F. For steam service, a different valve series with appropriate packing and trim must be selected.
Can I use this valve with a spring-return actuator?
Yes, the B309B is compatible with various Belimo actuators, including the TFRB and LF series for spring-return (fail-safe) functionality, as well as TR and LRB non-spring return models.
What is the leakage rate for the bypass port?
While the A-port features a 0% leakage rate (ANSI Class VI), the modified B-port has a maximum leakage rate of less than 2% of the B-port Cv, which is standard for bypass control in mixing applications.
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.
