Belimo B340 Valve

The Belimo B340 is a high-performance 1 1/2 inch 3-way characterising ball valve engineered for precise control in hydronic systems. Featuring a 37 Cv flow coefficient, this valve utilizes a specialized A-port equal percentage flow characteristic and a B-port modified for constant common port flow, ensuring stable thermal output and linear heat transfer. Built with a nickel-plated forged brass body and a stainless steel ball and stem, the B340 is rated for service in chilled or hot water applications with temperatures reaching up to 250°F and is compatible with up to 60% glycol solutions. This NPT female threaded valve is designed to mitigate hunting in the control loop, providing reliable mixing or diverting functionality in commercial HVACR configurations. Contractors choose the B340 for its blowout-proof stem design and high close-off pressure ratings, making it a staple for hydronic balancing and air handling unit coil control.

• Corrosion Resistance: The 304 stainless steel ball and stem extend service life in aggressive closed-loop systems compared to chrome-plated brass alternatives.
• Precision Control: Integrated TEFZEL characterizing discs ensure an equal percentage flow curve, preventing temperature fluctuations and reducing actuator wear.
• Temperature Range: Rated for 0°F to 250°F, making it suitable for both low-pressure steam and chilled water applications.
• Reduced Leakage: Features a zero-leakage rating (A-port) and maintenance-free EPDM O-rings for long-term reliability.

Is the Belimo B340 suitable for mixing or diverting applications?
Yes, this 3-way valve is designed for mixing applications where dual inlets combine into a common outlet, but it can also be used in diverting configurations depending on the piping layout.

What actuators are compatible with the B340?
The B340 is compatible with Belimo LR, AR, and NR series actuators. Use the universal mounting plate to ensure a secure mechanical connection to the ISO 5211 flange.

Can this valve handle high glycol concentrations?
The internal seals and ball materials are rated for ethylene or propylene glycol solutions up to 60% concentration by volume.

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.