
Belimo B278 Valve
The Belimo B278 is a high-performance 3-inch 2-way characterized control valve (CCV) designed for precise hydronic regulation in demanding commercial HVACR applications. This 130 Cv valve features a nickel-plated forged brass body and robust stainless steel ball and stem, ensuring long-term reliability in chilled or hot water systems. Engineered with a specialized TEFZEL® characterizing disc, the B278 provides an equal percentage flow characteristic, which prevents control loop hunting and stabilizes discharge temperatures in air handling units (AHUs) and large heating coils. Supporting fluid temperatures up to 212°F and up to 60% glycol solutions, this NPT female threaded valve is the industry standard for variable flow systems. With a 400 psi body pressure rating and 0% leakage (ANSI Class IV), it allows contractors to maintain tight system control while minimizing pumping energy and operational wear on actuators like the ARB or AFRB series.
Key Benefits- Precise Flow Control: The equal percentage flow characteristic ensures linear heat output, optimizing coil performance and eliminating temperature fluctuations.
- Industrial-Grade Durability: A stainless steel ball and stem paired with EPDM O-rings provides superior resistance to scaling and chemical corrosion in treated water systems.
- High-Capacity Efficiency: With a 130 Cv rating, this 3" valve manages significant flow volumes with minimal pressure drop, reducing total system pump head requirements.
- Zero Leakage Design: Features an ANSI Class IV bubble-tight shut-off, preventing unwanted energy transfer and improving plant efficiency during bypass or standby modes.
- Versatile Application: Rated for 400 psi and compatible with 60% glycol, making it ideal for everything from standard VAV reheat to complex process cooling loops.
What actuators are compatible with the Belimo B278?
The B278 is designed to pair with Belimo ARB, ARX, AFRB, and AFRX series actuators. For high-torque requirements, ensure the actuator matches the 100 psi close-off pressure rating of the valve body.
Can the B278 be used in steam applications?
No, this specific characterized control valve is rated for water and glycol solutions up to 212°F. For steam service, a valve with higher temperature trim specifically rated for steam (such as certain globe valve models) should be selected.
Does the valve require specific orientation during installation?
Yes, for 2-way CCVs, the characterizing disc must be installed on the inlet (upstream) side to ensure the equal percentage flow characteristic is maintained and the valve operates within its technical design parameters.
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: $758.68
-65%$758.68
$265.54Belimo B278 Valve
The Belimo B278 is a high-performance 3-inch 2-way characterized control valve (CCV) designed for precise hydronic regulation in demanding commercial HVACR applications. This 130 Cv valve features a nickel-plated forged brass body and robust stainless steel ball and stem, ensuring long-term reliability in chilled or hot water systems. Engineered with a specialized TEFZEL® characterizing disc, the B278 provides an equal percentage flow characteristic, which prevents control loop hunting and stabilizes discharge temperatures in air handling units (AHUs) and large heating coils. Supporting fluid temperatures up to 212°F and up to 60% glycol solutions, this NPT female threaded valve is the industry standard for variable flow systems. With a 400 psi body pressure rating and 0% leakage (ANSI Class IV), it allows contractors to maintain tight system control while minimizing pumping energy and operational wear on actuators like the ARB or AFRB series.
Key Benefits- Precise Flow Control: The equal percentage flow characteristic ensures linear heat output, optimizing coil performance and eliminating temperature fluctuations.
- Industrial-Grade Durability: A stainless steel ball and stem paired with EPDM O-rings provides superior resistance to scaling and chemical corrosion in treated water systems.
- High-Capacity Efficiency: With a 130 Cv rating, this 3" valve manages significant flow volumes with minimal pressure drop, reducing total system pump head requirements.
- Zero Leakage Design: Features an ANSI Class IV bubble-tight shut-off, preventing unwanted energy transfer and improving plant efficiency during bypass or standby modes.
- Versatile Application: Rated for 400 psi and compatible with 60% glycol, making it ideal for everything from standard VAV reheat to complex process cooling loops.
What actuators are compatible with the Belimo B278?
The B278 is designed to pair with Belimo ARB, ARX, AFRB, and AFRX series actuators. For high-torque requirements, ensure the actuator matches the 100 psi close-off pressure rating of the valve body.
Can the B278 be used in steam applications?
No, this specific characterized control valve is rated for water and glycol solutions up to 212°F. For steam service, a valve with higher temperature trim specifically rated for steam (such as certain globe valve models) should be selected.
Does the valve require specific orientation during installation?
Yes, for 2-way CCVs, the characterizing disc must be installed on the inlet (upstream) side to ensure the equal percentage flow characteristic is maintained and the valve operates within its technical design parameters.
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 B278 is a high-performance 3-inch 2-way characterized control valve (CCV) designed for precise hydronic regulation in demanding commercial HVACR applications. This 130 Cv valve features a nickel-plated forged brass body and robust stainless steel ball and stem, ensuring long-term reliability in chilled or hot water systems. Engineered with a specialized TEFZEL® characterizing disc, the B278 provides an equal percentage flow characteristic, which prevents control loop hunting and stabilizes discharge temperatures in air handling units (AHUs) and large heating coils. Supporting fluid temperatures up to 212°F and up to 60% glycol solutions, this NPT female threaded valve is the industry standard for variable flow systems. With a 400 psi body pressure rating and 0% leakage (ANSI Class IV), it allows contractors to maintain tight system control while minimizing pumping energy and operational wear on actuators like the ARB or AFRB series.
Key Benefits- Precise Flow Control: The equal percentage flow characteristic ensures linear heat output, optimizing coil performance and eliminating temperature fluctuations.
- Industrial-Grade Durability: A stainless steel ball and stem paired with EPDM O-rings provides superior resistance to scaling and chemical corrosion in treated water systems.
- High-Capacity Efficiency: With a 130 Cv rating, this 3" valve manages significant flow volumes with minimal pressure drop, reducing total system pump head requirements.
- Zero Leakage Design: Features an ANSI Class IV bubble-tight shut-off, preventing unwanted energy transfer and improving plant efficiency during bypass or standby modes.
- Versatile Application: Rated for 400 psi and compatible with 60% glycol, making it ideal for everything from standard VAV reheat to complex process cooling loops.
What actuators are compatible with the Belimo B278?
The B278 is designed to pair with Belimo ARB, ARX, AFRB, and AFRX series actuators. For high-torque requirements, ensure the actuator matches the 100 psi close-off pressure rating of the valve body.
Can the B278 be used in steam applications?
No, this specific characterized control valve is rated for water and glycol solutions up to 212°F. For steam service, a valve with higher temperature trim specifically rated for steam (such as certain globe valve models) should be selected.
Does the valve require specific orientation during installation?
Yes, for 2-way CCVs, the characterizing disc must be installed on the inlet (upstream) side to ensure the equal percentage flow characteristic is maintained and the valve operates within its technical design parameters.
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.












